# Arbiter Agent Hub

> Arbiter's canonical machine commerce surface: deterministic intelligence products with exact schemas, sold per call over x402 v2 with evidence-bound outputs and no execution authority.

## Machine surfaces

- [OpenAPI document](https://arbiterverse.com/openapi.json): The canonical HTTP contract: operation ids, schemas, errors, auth and payment semantics.
- [Product feed](https://arbiterverse.com/feed.json): Versioned change feed for products and availability; Bazaar discovery records ride with it.
- [Catalog](https://arbiterverse.com/catalog): The canonical product index the Agent Hub sells from.
- [A2A Agent Card](https://arbiterverse.com/agent-card.json): The public Agent Card (also served at /.well-known/agent-card.json).
- [MCP server metadata](https://arbiterverse.com/mcp/server.json): MCP-visible tool metadata for the same catalog products.
- [x402 Bazaar records](https://arbiterverse.com/x402/bazaar.json): The discovery records published for x402 Bazaar indexes.
- [x402 discovery](https://arbiterverse.com/api/x402/.well-known): The payable product routes; an unpaid POST to each answers 402 with an x402 v2 offer.
- [Product docs](https://arbiterverse.com/docs): Stable operation ids, schemas, errors and payment semantics per product.
- [Service identity](https://arbiterverse.com/.well-known/did.json): did:web binding for the authorized receipt signing key.
- [Security contact](https://arbiterverse.com/.well-known/security.txt): Security contact and disclosure policy.

## Products: Arbiter Verify

- [Arbiter Verdict: deliverable acceptance check](https://arbiterverse.com/api/x402/DELIVERABLE_ACCEPTANCE_CHECK): POST, JSON body {"request": {...}}. Arbiter Verdict for agent jobs and bounties: send the acceptance criteria and the deliverable, get PASS, FAIL or UNCHECKABLE for every criterion and an overall ACCEPT, REJECT or NO_VERDICT (any FAIL rejects; any… Price: from $0.04 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Claim-set contradiction scan](https://arbiterverse.com/api/x402/CLAIM_CONTRADICTION_SCAN): POST, JSON body {"request": {...}}. Send 2 to 200 claims ({"id","text","subject"?,"source"?}); get back every pair about the same subject that cannot both be right, by two mechanical tests: identical wording except for a negation (CONTRADICTION, e.g.… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [BYOS cross-document agreement](https://arbiterverse.com/api/x402/BYOS_RECORD_CROSS_SOURCE_VERIFIED): POST, JSON body {"request": {...}}. Bring your own schema and 2 to 256 JSON documents from sources you label with originGroups; get, per field (and per entity with keyField), whether documents from different groups AGREE, DISAGREE (with each distinct… Price: from $0.01 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Agent-stack self-check (cost leaks, retry storms, fake-green)](https://arbiterverse.com/api/x402/AGENT_STACK_DIAGNOSTIC): POST, JSON body {"request": {...}}. Send your agent system's telemetry as an arbiter.agentops.telemetry.v1 bundle (per service: status, token spend, API calls, retries, duplicate work ids, stalled seconds, validation loops, completed and failed… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Agent job pipeline (up to 5 self-computed steps, one payment)](https://arbiterverse.com/api/x402/AGENT_JOB_PIPELINE): POST, JSON body {"request": {...}}. One paid agent job that runs up to 5 of Arbiter's self-computed products in order, with one quote and one settlement: for example BYOS_RECORD_SIMPLE to extract records, then DELIVERABLE_ACCEPTANCE_CHECK on those… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Agent-system diagnosis: what is broken, why, and how to repair it](https://arbiterverse.com/api/x402/AGENT_SYSTEM_DIAGNOSIS): POST, JSON body {"request": {...}}. Send what your agent system did - components, tools with their schemas, routes and redacted configuration, trace spans, what components claimed versus what was observed, and the failures you saw - and get a ranked… Price: from $0.0226 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Agent verdict: did the work meet your criteria (signed, per criterion)](https://arbiterverse.com/api/x402/AGENT_VERDICT): POST, JSON body {"request": {...}}. Did the agent actually do what you paid it to do? Price: from $0.04 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.

## Products: Arbiter Markets

- [DeFi opportunity verdict](https://arbiterverse.com/api/x402/DEFI_OPPORTUNITY_VERDICT): POST, JSON body {"request": {...}}. DeFi opportunity verdict for supplying an amount of a curated US-dollar stablecoin over a horizon: every pinned Aave v3 market that lists it, on the subject chain and on every other chain Arbiter serves with a… Price: from $0.01173 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Market regime state](https://arbiterverse.com/api/x402/MARKET_REGIME_STATE): POST, JSON body {"request": {...}}. Market regime for the market, one chain or one watched pool: the same published regime state Arbiter's own trading reads (state root, sequence, as-of, last change), its resale-admitted dimensions (volatility and… Price: from $0.002 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.

## Products: Arbiter Execution

- [Swap quote: best route across chains (two-operator, on-chain)](https://arbiterverse.com/api/x402/SWAP_QUOTE): POST, JSON body {"request": {...}}. The best swap route for your trade across Arbiter's venue book (Uniswap V3 every fee tier, Uniswap V2 and PancakeSwap V2) on 1-3 EVM chains you name, from on-chain QuoterV2 / getAmountsOut reads that two… Price: from $0.0072 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 60s, max 300s; whole order from 100s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Best execution route: every chain and venue compared after gas, impact and fees](https://arbiterverse.com/api/x402/BEST_EXECUTION_ROUTE): POST, JSON body {"request": {...}}. Where should this trade actually execute? Price: from $0.00858 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 60s, max 300s; whole order from 100s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Swap calldata: unsigned transactions for your wallet to sign](https://arbiterverse.com/api/x402/SWAP_CALLDATA): POST, JSON body {"request": {...}}. Everything SWAP_QUOTE returns, plus the unsigned transactions your own wallet signs and sends for the best route you can fund: an exact-amount approval when needed (never unlimited), then the swap with a hard… Price: from $0.00858 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 60s, max 300s; whole order from 100s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Action economics: what a DeFi action really costs and when it pays](https://arbiterverse.com/api/x402/ACTION_ECONOMICS_QUOTE): POST, JSON body {"request": {...}}. All-in economics of one DeFi action at one confirmed block: supply, withdraw, borrow or repay on a pinned Aave v3 market (reserve state and rate model), a swap through a Uniswap V3-style pool (the pool's own price… Price: from $0.012 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.

## Products: Arbiter Risk

- [Contract change watch](https://arbiterverse.com/api/x402/CONTRACT_CHANGE_WATCH): POST, JSON body {"request": {...}}. Contract control change watch: code, EIP-1967 implementation/admin/beacon, owner(), paused(), Safe owners and threshold, timelock delay, and the same control reads on the owner and proxy admin, compared with… Price: from $0.005 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Vulnerability record lookup (CVE)](https://arbiterverse.com/api/x402/VULNERABILITY_RECORD_LOOKUP): POST, JSON body {"request": {...}}. One CVE's official record from the NIST National Vulnerability Database, with its CISA Known Exploited Vulnerabilities status. This product uses the NVD API but is not endorsed or certified by the NVD. Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Actively exploited vulnerabilities, recent additions](https://arbiterverse.com/api/x402/EXPLOITED_VULNERABILITIES_RECENT): POST, JSON body {"request": {...}}. Every vulnerability CISA added to its Known Exploited Vulnerabilities (KEV) catalog in the last N days (1 to 90), newest first: CVE id, vendor, product, vulnerability name, date added, remediation due date, known… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Token risk verdict (any EVM chain)](https://arbiterverse.com/api/x402/TOKEN_RISK_VERDICT): POST, JSON body {"request": {...}}. ERC-20 token risk verdict: a grade of LOW, MEDIUM, HIGH or CRITICAL computed by fixed code rules, with every red flag behind it. Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Contract risk and change verdict (with continuous monitoring)](https://arbiterverse.com/api/x402/CONTRACT_RISK_VERDICT): POST, JSON body {"request": {...}}. Contract risk and change verdict: LOW, ELEVATED, HIGH or CRITICAL by a fixed policy over the contract's control plane (code, EIP-1967 implementation, admin and beacon, owner(), paused(), Safe owners and threshold… Price: from $0.016 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.

## Products: Utility

- [Token metadata enrichment](https://arbiterverse.com/api/x402/TOKEN_METADATA_ENRICHMENT): POST, JSON body {"request": {...}}. ERC-20 metadata (code presence, name, symbol, decimals, total supply) read at one confirmed block by a two-provider RPC quorum. Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Token identity enrichment](https://arbiterverse.com/api/x402/TOKEN_IDENTITY_ENRICHMENT): POST, JSON body {"request": {...}}. ERC-20 metadata plus a conformance and curated-registry identity verdict from one two-provider RPC quorum observation. Price: from $0.002 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Contract/code-change watch](https://arbiterverse.com/api/x402/CONTRACT_CODE_CHANGE_WATCH): POST, JSON body {"request": {...}}. Contract code and EIP-1967 proxy change watch: code hash and size, implementation, admin and beacon slots and the implementation's code hash, read at one confirmed block by a two-provider RPC quorum and compared… Price: from $0.0012 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Protocol contract risk snapshot](https://arbiterverse.com/api/x402/PROTOCOL_RISK_SNAPSHOT): POST, JSON body {"request": {...}}. Protocol contract risk snapshot: upgradeability, admin kind (EOA, Safe m-of-n, timelock, contract), owner, pause state and code identity from one two-provider quorum observation, plus what changed since Arbiter's… Price: from $0.005 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Wallet movement watch](https://arbiterverse.com/api/x402/WALLET_MOVEMENT_WATCH): POST, JSON body {"request": {...}}. Wallet movement watch: native balance, nonce, account kind (EOA, contract, EIP-7702 delegation) and curated stablecoin balances, compared with Arbiter's own stored observation of the wallet at the start of the… Price: from $0.00183 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Wallet public activity brief](https://arbiterverse.com/api/x402/WALLET_PUBLIC_ACTIVITY_BRIEF): POST, JSON body {"request": {...}}. Wallet public activity brief across every chain Arbiter serves: per chain, account kind, native balance, nonce, curated stablecoin balances and Safe threshold/owners, each from its own two-provider quorum… Price: from $0.008 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Whale threshold watch](https://arbiterverse.com/api/x402/WHALE_THRESHOLD_WATCH): POST, JSON body {"request": {...}}. Balance-threshold watch for a named wallet: its native or curated-stablecoin balance against the threshold you set, and whether it crossed the threshold since Arbiter's own stored observation at the start of the… Price: from $0.002 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Change/state intelligence feed](https://arbiterverse.com/api/x402/STATE_CHANGE_FEED): POST, JSON body {"request": {...}}. Conditional state feed over Arbiter's chain-native observation plans (account, contract code, contract control, token metadata): send the etag from your last response and get NOT_MODIFIED, or only the sections… Price: from $0.00183 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [DeFi pool and vault risk snapshot](https://arbiterverse.com/api/x402/DEFI_POOL_RISK_SNAPSHOT): POST, JSON body {"request": {...}}. DeFi pool or vault risk snapshot: interface (Uniswap V2-style, V3-style, Solidly stable/volatile, ERC-4626 vault), both legs' identity and balances in the pool, reserves or V3 price and active liquidity, the… Price: from $0.003733 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Token supply structure snapshot](https://arbiterverse.com/api/x402/TOKENOMICS_SNAPSHOT): POST, JSON body {"request": {...}}. ERC-20 supply structure: total supply, cap or maxSupply and mintable headroom, balances at the burn and zero addresses, held by the token contract and by its owner, a circulating-supply proxy, owner kind… Price: from $0.0016 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Stablecoin deployment health brief](https://arbiterverse.com/api/x402/STABLECOIN_HEALTH_BRIEF): POST, JSON body {"request": {...}}. Stablecoin deployment health: identity against Arbiter's curated issuer-verified registry, supply, pause state, upgradeability, who holds each control role (owner, proxy admin, master minter, pauser, blacklister… Price: from $0.0032 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Lending market brief](https://arbiterverse.com/api/x402/LENDING_MARKET_BRIEF): POST, JSON body {"request": {...}}. Lending market snapshot for an Aave v3 pool or data provider, a Compound v3 Comet or an ERC-4626 vault: per reserve or market the supply and borrow rates, totals and utilization where the contract reports them… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [EVM calldata decoder](https://arbiterverse.com/api/x402/EVM_ABI_DECODE_CALLDATA): POST, JSON body {"request": {...}}. Decodes EVM transaction calldata with the ABI you supply: function name, 4-byte selector, canonical signature and every argument (uint/int as decimal strings, bytes as hex, addresses EIP-55, tuples and arrays… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [EVM function-call encoder](https://arbiterverse.com/api/x402/EVM_ABI_ENCODE_CALL): POST, JSON body {"request": {...}}. Builds exact EVM calldata from a human-readable Solidity function signature and JSON arguments, with strict type checks (address checksums, integer ranges, fixed bytes lengths, tuple shapes). Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [EVM signature recovery (EIP-191 / EIP-712)](https://arbiterverse.com/api/x402/EVM_SIGNATURE_RECOVER): POST, JSON body {"request": {...}}. Recovers the signer address of an EIP-191 personal_sign message (UTF-8 or hex bytes) or EIP-712 typed data from a 65-byte or 64-byte EIP-2098 signature, returns the signed digest, low-s status and, if you pass… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [EIP-712 typed data validator and hasher](https://arbiterverse.com/api/x402/EIP712_TYPED_DATA_HASH): POST, JSON body {"request": {...}}. Validates EIP-712 typed data strictly (type graph, domain fields, every value against its type) and returns actionable issues plus encodeType, typeHash, domain separator, struct hash and the digest a wallet signs. Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Sign-In with Ethereum (EIP-4361) verifier](https://arbiterverse.com/api/x402/SIWE_MESSAGE_VERIFY): POST, JSON body {"request": {...}}. Checks a Sign-In with Ethereum message against EIP-4361 (header, EIP-55 address, field order, URI, version, chain id, nonce, RFC 3339 times), recovers the signer of the exact text, and gives a time-window verdict… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [x402 payment requirements and payload linter](https://arbiterverse.com/api/x402/X402_PAYMENT_REQUIREMENTS_LINT): POST, JSON body {"request": {...}}. Lints an x402 PaymentRequired (402 body), PaymentPayload (decoded X-PAYMENT / PAYMENT-SIGNATURE) or single PaymentRequirements, v1 or v2: @x402/core schema validity, CAIP-2 networks, base-unit amounts, asset and… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [EVM address normalizer](https://arbiterverse.com/api/x402/EVM_ADDRESS_NORMALIZE): POST, JSON body {"request": {...}}. Validates up to 256 EVM addresses per call and returns, by index, validity (with the reason: not hex or bad EIP-55 checksum), the EIP-55 checksum form, lower-case form, CAIP-10 (when chainId is given), zero-address… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US public company profile (filer record)](https://arbiterverse.com/api/x402/PUBLIC_COMPANY_PROFILE): POST, JSON body {"request": {...}}. Official SEC EDGAR profile of one US-registered company or filer: registered name, tickers and exchanges, SIC code and industry, entity type, filer category, state of incorporation, fiscal year end, and its 20 most… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US public company financial facts (XBRL)](https://arbiterverse.com/api/x402/PUBLIC_COMPANY_FINANCIAL_FACTS): POST, JSON body {"request": {...}}. Headline financials of one SEC filer as reported in XBRL: revenue, net income, total assets, total liabilities, stockholders' equity (USD) and common shares outstanding, each with its latest annual and latest… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Insider filings, recent (Forms 3/4/5)](https://arbiterverse.com/api/x402/INSIDER_FILINGS_RECENT): POST, JSON body {"request": {...}}. The 25 most recent Section 16 insider filings (Forms 3, 4, 5 and amendments) for one issuer from SEC EDGAR: form, filing and report dates, acceptance time, accession number and EDGAR link, plus how many fall in… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US federal debt outstanding, daily](https://arbiterverse.com/api/x402/US_FEDERAL_DEBT_DAILY): POST, JSON body {"request": {...}}. The latest official US total public debt outstanding, debt held by the public and intragovernmental holdings (exact USD decimals) from Treasury Fiscal Data, with the previous business days (up to 10 records) and… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US public company latest 10-K / 10-Q / 8-K links](https://arbiterverse.com/api/x402/PUBLIC_COMPANY_LATEST_REPORTS): POST, JSON body {"request": {...}}. Links to a US-listed company's latest SEC reports: its latest annual (10-K, 20-F or 40-F), quarterly (10-Q) and current report (8-K or 6-K), each with filing date, period, accession number, EDGAR index URL and… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US public company 8-K material events](https://arbiterverse.com/api/x402/PUBLIC_COMPANY_MATERIAL_EVENTS): POST, JSON body {"request": {...}}. One SEC registrant's 25 most recent material-event filings (Form 8-K; Form 6-K for foreign issuers), each with filing and event dates, accession number, EDGAR index and primary document URLs, and the 8-K item codes… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US government operating cash balance, daily](https://arbiterverse.com/api/x402/US_GOVERNMENT_CASH_BALANCE): POST, JSON body {"request": {...}}. The official US Treasury General Account (TGA) cash balance from the Daily Treasury Statement: the latest business day's opening balance, deposits, withdrawals and closing balance, in millions of USD exactly as… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US address geocode](https://arbiterverse.com/api/x402/ADDRESS_GEOCODE): POST, JSON body {"request": {...}}. One US street address to its US Census Bureau match: coordinates, standardized address, TIGER line id and side of the street, and match type (MATCH, TIE or NO_MATCH). Price: from $0.0012 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US geographies for a point (state, county, tract; FIPS)](https://arbiterverse.com/api/x402/COORDINATES_TO_US_GEOGRAPHIES): POST, JSON body {"request": {...}}. The US state, county, census tract, block group and 2020 census block containing a US latitude/longitude, with FIPS codes, GEOIDs and names. Price: from $0.0012 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US address geocode, batch of up to 10](https://arbiterverse.com/api/x402/ADDRESS_GEOCODE_BATCH): POST, JSON body {"request": {...}}. Up to 10 US street addresses in one call and one settlement, each matched by the US Census Bureau Geocoder: coordinates, standardized address, TIGER line and side, match type, in your order. Price: from $0.012 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US federal debt average interest rates by security](https://arbiterverse.com/api/x402/US_DEBT_AVERAGE_INTEREST_RATES): POST, JSON body {"request": {...}}. The average interest rate the US Treasury pays on each kind of debt it has outstanding, from Treasury Fiscal Data: bills, notes, bonds, TIPS, FRNs and the marketable, non-marketable and total interest-bearing debt… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US official exchange rates (quarterly)](https://arbiterverse.com/api/x402/US_OFFICIAL_EXCHANGE_RATES): POST, JSON body {"request": {...}}. The US government's official foreign-currency exchange rates from the Treasury Reporting Rates of Exchange: units of each currency per US dollar for the newest quarter-end, with effective dates and amendments, for… Price: from $0.002 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US federal receipts, outlays and deficit (monthly)](https://arbiterverse.com/api/x402/US_FEDERAL_RECEIPTS_OUTLAYS): POST, JSON body {"request": {...}}. US federal government receipts, outlays and the deficit or surplus from the latest Monthly Treasury Statement: the latest month, the same month a year earlier, fiscal-year-to-date totals and every month of the… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US debt subject to limit and headroom](https://arbiterverse.com/api/x402/US_DEBT_LIMIT_STATUS): POST, JSON body {"request": {...}}. The US statutory debt limit and the debt subject to it from the Daily Treasury Statement: debt held by the public, intragovernmental holdings, the published adjustments, the limit, and the remaining headroom and… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US government bond auctions calendar (upcoming)](https://arbiterverse.com/api/x402/US_BOND_AUCTIONS_UPCOMING): POST, JSON body {"request": {...}}. Every announced US Treasury auction that has not happened yet, soonest first: security type and term, CUSIP, reopening flag, offering amount, and announcement, auction and issue dates, from Treasury Fiscal Data. Price: from $0.008 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US government bond auction results (yield, bid-to-cover)](https://arbiterverse.com/api/x402/US_BOND_AUCTION_RESULTS): POST, JSON body {"request": {...}}. The most recent US Treasury auction results from Treasury Fiscal Data: high yield or discount rate, investment rate, price, interest rate, bid-to-cover ratio, and offering, tendered and accepted amounts, newest… Price: from $0.006 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Recent earthquakes (live feed)](https://arbiterverse.com/api/x402/EARTHQUAKES_RECENT): POST, JSON body {"request": {...}}. Recent earthquakes worldwide from the USGS real-time feeds: significant, M4.5+, M2.5+ or M1.0+ events of the past hour, day, week or month, with magnitude, place, time, coordinates, depth, tsunami flag, PAGER alert… Price: from $0.002 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Earthquakes near a location](https://arbiterverse.com/api/x402/EARTHQUAKES_NEAR_POINT): POST, JSON body {"request": {...}}. Earthquakes near any point from the USGS catalog: every event within your radius (1-1000 km) of a latitude and longitude, at or above your magnitude, over the last 1-30 days, with magnitude, place, time, depth… Price: from $0.002 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Vehicle safety recalls by make, model, year](https://arbiterverse.com/api/x402/VEHICLE_RECALLS): POST, JSON body {"request": {...}}. Every safety recall NHTSA lists for one vehicle make, model and model year: campaign number, report date, affected component, NHTSA's summary, consequence and remedy, park-it and park-outside warnings, over-the-air… Price: from $0.024 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Vehicle recall campaign lookup](https://arbiterverse.com/api/x402/VEHICLE_RECALL_CAMPAIGN): POST, JSON body {"request": {...}}. One NHTSA safety recall campaign by its campaign number: manufacturer, component, report date, potential units affected, NHTSA's summary, consequence and remedy, park-it and over-the-air flags, the NHTSA recall… Price: from $0.024 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US federal rules and notices search](https://arbiterverse.com/api/x402/FEDERAL_RULES_AND_NOTICES): POST, JSON body {"request": {...}}. The 20 newest Federal Register documents matching your search: rules, proposed rules, notices and presidential documents, each with document number, title, type, abstract, publication date, agencies, the… Price: from $0.008 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US weather forecast for a point](https://arbiterverse.com/api/x402/WEATHER_FORECAST_AT_POINT): POST, JSON body {"request": {...}}. The official US National Weather Service forecast for one US latitude/longitude: up to 14 twelve-hour periods with temperature, chance of precipitation, wind and NWS forecast text, plus the forecast office, grid… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [US active weather alerts](https://arbiterverse.com/api/x402/WEATHER_ALERTS_ACTIVE): POST, JSON body {"request": {...}}. The US National Weather Service's active weather alerts (warnings, watches, advisories) for a US state, territory or marine area code, or for one US latitude/longitude: event, severity, urgency, certainty, onset… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 20s, max 180s; whole order from 60s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [BYOS record extraction - simple tier](https://arbiterverse.com/api/x402/BYOS_RECORD_SIMPLE): POST, JSON body {"request": {...}}. Bring your own schema: send a JSON Schema subset (string, number, integer and boolean properties, a required list) and up to 256 JSON documents; get back typed records in your schema, each validated before return… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Cross-asset relationship statistics (your series)](https://arbiterverse.com/api/x402/CROSS_ASSET_RELATIONSHIP_SNAPSHOT): POST, JSON body {"request": {...}}. Relationship statistics for 2 to 10 price or return series you supply (aligned by index, up to 2,000 points each and 4,000 in all): Pearson and Spearman correlation matrices of log returns, beta, alpha and R… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Sentiment and price divergence (your series)](https://arbiterverse.com/api/x402/SENTIMENT_PRICE_DIVERGENCE): POST, JSON body {"request": {...}}. Divergence between a sentiment series and a price series you supply (30 to 2,000 aligned points): window changes of each, z-scored against their own history, a current divergence classified as… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Historical analogue study (your price history)](https://arbiterverse.com/api/x402/HISTORICAL_ANALOGUE_STUDY): POST, JSON body {"request": {...}}. Finds the past windows of a price history you supply (60 to 4,000 points, companion series included) whose shape most resembles the latest window, and reports what followed each: forward return, maximum run-up and… Price: from $0.012 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Market thesis stress test (your price history)](https://arbiterverse.com/api/x402/MARKET_THESIS_STRESS_TEST): POST, JSON body {"request": {...}}. Stress-tests a typed price thesis ("UP 5% within 10 periods, stop at 3%") against a price history you supply (60 to 4,000 points): from every past start, how often the target came before the stop, how often neither… Price: from $0.08 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Lending reserve state (rates, caps, liquidity)](https://arbiterverse.com/api/x402/LENDING_RESERVE_STATE): POST, JSON body {"request": {...}}. Aave v3 reserve state for one asset on every pinned Aave v3 market of its chain: current supply and variable borrow APR (and approximate APY), supplied, borrowed and available liquidity, borrow usage… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [DEX pool state (concentrated-liquidity v3 pools)](https://arbiterverse.com/api/x402/DEX_POOL_STATE): POST, JSON body {"request": {...}}. Uniswap V3-style pool state: tokens, fee tier, tick spacing, slot0, active liquidity, the exact spot price both ways, TWAPs from the pool's own oracle observations, depth to move the price 0.5 to 5 percent, and… Price: from $0.003733 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [On-chain pool TWAP price](https://arbiterverse.com/api/x402/POOL_TWAP_PRICE): POST, JSON body {"request": {...}}. On-chain price of a Uniswap V3-style pool: the exact spot price both ways and TWAPs over the pool's own oracle history (the longest sampled window up to 30 minutes leads), the spot-to-TWAP deviation and the… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Pool liquidity risk brief](https://arbiterverse.com/api/x402/LIQUIDITY_RISK_BRIEF): POST, JSON body {"request": {...}}. Liquidity risk of a Uniswap V3-style pool: depth in both tokens (and dollars when a leg is a curated stablecoin) to move the price 0.5, 1, 2 and 5 percent, the current tick range, spot-to-TWAP deviation, oracle… Price: from $0.008 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [ERC-4626 vault state](https://arbiterverse.com/api/x402/ERC4626_VAULT_STATE): POST, JSON body {"request": {...}}. ERC-4626 vault state: asset, total assets and shares, share price, redeem value and exit discount, idle assets, upgradeability, and for a MetaMorpho vault its Morpho singleton, curator, guardian, owner, timelock… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Isolated lending market state (behind a curated vault)](https://arbiterverse.com/api/x402/ISOLATED_LENDING_MARKET_STATE): POST, JSON body {"request": {...}}. Morpho Blue market state behind a MetaMorpho vault: for each queued market its id checked against its parameters, loan and collateral tokens, LLTV, supply, borrow and utilization, market fee, approximate borrow and… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Dollar-stablecoin supply by chain](https://arbiterverse.com/api/x402/STABLECOIN_SUPPLY_BY_CHAIN): POST, JSON body {"request": {...}}. Dollar-stablecoin supply on every chain Arbiter serves: the totalSupply of each issuer deployment in Arbiter's curated list on each chain, each chain from its own two-provider quorum observation, totals per… Price: from $0.008 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Gas fee snapshot](https://arbiterverse.com/api/x402/GAS_FEE_SNAPSHOT): POST, JSON body {"request": {...}}. Fee conditions of one chain: base fee of the confirmed block and the nine before it (latest, minimum, median, maximum), Ethereum's next-block base fee projection, typical transfer, token transfer and swap costs at… Price: from $0.0024 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Chain activity snapshot](https://arbiterverse.com/api/x402/ECOSYSTEM_ACTIVITY_BRIEF): POST, JSON body {"request": {...}}. Block production and activity of one chain over its confirmed block and the nine before it: average block time, transactions per block and per second, gas used and utilization, base fee, from one two-provider… Price: from $0.004 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Public wallet/address snapshot](https://arbiterverse.com/api/x402/PUBLIC_WALLET_ADDRESS_SNAPSHOT): POST, JSON body {"request": {...}}. Account kind, native balance, nonce and curated known-stablecoin balances read at one confirmed block by a two-provider RPC quorum. Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 15s, max 120s; whole order from 55s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Merkle allowlist builder (standard-v1 tree format)](https://arbiterverse.com/api/x402/MERKLE_ALLOWLIST_BUILD): POST, JSON body {"request": {...}}. Builds an OpenZeppelin StandardMerkleTree (standard-v1, sorted leaves, double-keccak leaves) from up to 5,000 rows, default [address, uint256] or your own elementary leafEncoding, and returns the root plus… Price: from $0.001 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 5s, max 60s; whole order from 45s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.

## Products: Plans

- [Arbiter Brief plan - 30 days](https://arbiterverse.com/api/x402/ARBITER_BRIEF_MONTHLY_PASS): POST, JSON body {"request": {...}}. For a person who wants to know what matters, without being a crypto engineer. Price: from $19.99 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Arbiter Intelligence plan - 30 days](https://arbiterverse.com/api/x402/ARBITER_INTELLIGENCE_MONTHLY_PASS): POST, JSON body {"request": {...}}. For an active trader, analyst or small agent that uses Arbiter's intelligence every day. Everything in Brief, with larger allowances. Price: from $35.99 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Arbiter Operator plan - 30 days](https://arbiterverse.com/api/x402/ARBITER_OPERATOR_MONTHLY_PASS): POST, JSON body {"request": {...}}. For an operator or an agent that acts on Arbiter's answers: the largest self-service allowance. Everything in Intelligence, with the largest self-service allowances. Price: from $119.99 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.
- [Arbiter Team plan - 30 days](https://arbiterverse.com/api/x402/ARBITER_TEAM_MONTHLY_PASS): POST, JSON body {"request": {...}}. For a team: several wallets (people or agents) share one plan, with a usage trail per wallet. Everything in Operator, shared by the paying wallet and up to 5 member wallets named when you buy. Price: from $169.99 per call, paid over x402 v2 on Ethereum, OP Mainnet, Sei, Polygon PoS, Monad Mainnet, Arbitrum One, Avalanche C-Chain, Arc, Base; the exact amount is in the 402 quote. Delivery: after the payment is final on-chain; repeat the same request until state is FULFILLED. Completion: work p95 2s, max 30s; whole order from 42s p95 (eip155:1329), dominated by the chain's finality elsewhere; independently settled before the work starts.

Contact: Lennykamara95@gmail.com