Every agent-payable API.

Decision procedure for an agent holding a payment intent that can be settled via multiple protocols: x402, AP2, or MPP. Covers protocol capability checks against the merchant offer, intent normalization across protocols, cost and latency comparison, scoped-account policy envelope checks (approved intent, policy expiry, spending caps) before routing, a single-routing rule so one intent is never double-settled across protocols, re-quote fallback, and receipt binding to the chosen protocol.

Decision procedure for an agent that must choose which stablecoin to settle a payment intent in when the merchant accepts several (USDC, USDT, USDGO, and similar). Inputs: accepted denominations per merchant offer, wallet balances per denomination, facilitator and rail fee asymmetry per coin, exchange-rate volatility of non-USD-pegged or weakly-pegged assets, and the principal policy envelope on denomination preference. Outputs one verdict per intent: settle-native (pay in the coin the wallet

Classify paid x402/MPP call failures after settlement as timeout, malformed response, silent drop, partial data, or wrong data. Decide between retry, refund request, or provider switch. Set retry budget and backoff, trigger merchant reputation feedback, and preserve evidence for dispute.

Single-fetch URL intelligence, access checks, commerce signals, and risk.

Korean exchange prices (Upbit, Bithumb) for a single token in KRW

Search onchain DEX pools and token, by contract address, name, or token symbol.

Agent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, OpenAPI validity, JSON-LD catalog and x402/MPP payability. Same published methodology as the asterpay.io checker. Paid via x402.

Agent-Readiness Verify (CDP-settled mirror) — is this site discoverable and payable by an agent (robots/llms/structured data/machine surfaces)? Returns a signed, re-checkable certificate.

Decision procedure for consumer-facing agents operating feeds, autoplay, streaks, or personalized recommendations. Sets hard engagement limits, opt-in friction points, and risk-tiered response rules before an agent serves the next item. Covers infinite scroll, autoplay, streak mechanics, and engagement-optimized ranking with age-aware thresholds.

Agent Result Budget Check: Agent Result Budget Check checks cumulative caller-supplied spend against daily and per-call budgets from bounded caller-supplied values without an external provider. Call Agent Result Budget Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Budget Check as ve…

Agent Result Citation Check: Agent Result Citation Check checks bounded citation objects for URL and title fields from bounded caller-supplied values without an external provider. Call Agent Result Citation Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Citation Check as versioned de…

Agent Result Completeness Check: Agent Result Completeness Check checks required output paths for non-null values from bounded caller-supplied values without an external provider. Call Agent Result Completeness Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Completeness Check as vers…

Agent Result Confidence Check: Agent Result Confidence Check checks a confidence value against caller bounds without validating truth from bounded caller-supplied values without an external provider. Call Agent Result Confidence Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Confiden…

Agent Result Cost Check: Agent Result Cost Check checks declared result cost against a call budget from bounded caller-supplied values without an external provider. Call Agent Result Cost Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Cost Check as versioned deterministic JSON. Price…

Agent Result Envelope Check: Agent Result Envelope Check checks a generic agent result for schema, status, and data or error from bounded caller-supplied values without an external provider. Call Agent Result Envelope Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Envelope Check as v…

Agent Result Error Shape Check: Agent Result Error Shape Check checks an agent error object for code, message, and retryability from bounded caller-supplied values without an external provider. Call Agent Result Error Shape Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Error Shape C…

Agent Result Freshness Check: Agent Result Freshness Check checks result observation age against a caller freshness budget from bounded caller-supplied values without an external provider. Call Agent Result Freshness Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Freshness Check as v…

Agent Result Provenance Check: Agent Result Provenance Check checks result provenance for source, observed time, and method from bounded caller-supplied values without an external provider. Call Agent Result Provenance Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Provenance Check a…

Agent Result Schema Version Check: Agent Result Schema Version Check checks a result schema identifier against supported versions from bounded caller-supplied values without an external provider. Call Agent Result Schema Version Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Result Schema V…

Retrieve a public webpage as sanitized Markdown with prompt injection detection, hidden-instruction, tool-coercion and URL-exfiltration risk assessment. Protect agent context and inspect untrusted webpage or MCP output before model memory or action planning.

Durable key/value memory for stateless agents, private to your paying wallet. POST {key, value, ttl?} to store JSON; GET ?key= to read it back on a later run. Value up to 8KB, ttl up to 30d. An agent cannot persist state across runs by itself — this is that missing memory as one call.

A directory built for agents choosing which paid tool to call next: 11 ForgeMesh x402 services with category, endpoint counts, and price ranges, refreshed from each service's live API discovery output. Optional category filter narrows results. Returns the product id needed to fetch full call shapes from fleet-product-detail.

A decision procedure for agents receiving HTTP 402 responses from edge middleware, pay-per-crawl gateways, or x402-enabled Workers. Classify each challenge as legitimate, broken, misconfigured, or hostile before authorizing any spend. Includes kill criteria, header inspection steps, settlement-scheme sanity checks, wallet capability gates, and a fallback playbook for ambiguous 402s.

Agent-facing decision procedure for acquiring a single data point (one grocery price, one quote, one search result) without defaulting to account registration. Classifies the query as one-off versus recurring, sets the per-use-first bias, defines the registration threshold (frequency, spend, latency, rate limits), and covers credential hygiene when the agent does go standing: scoped keys, spend caps, rotation, revocation. Blunt procedure, not marketing.

Bookkeeping statement for an AI agent's own spending: reads every USDC payment of a wallet from Base, converts each to EUR at the ECB rate of the payment date, groups by payee, adds the VAT treatment (reverse charge, Art. 44/196) and returns a bookkeeping-ready statement plus CSV export. Agent micro-payments become auditable.

List all available FX symbols with their current quality state and source count. AI agent API for discovering available instruments before subscribing to tick data. Accepts USDC payments on Base and Solana

Decision procedure for an agent that just settled an x402 payment: classify the outcome into one of five classes (delivered-as-agreed, late, wrong deliverable, silent failure, hostile), compute the reputation delta for that merchant, apply allowlist downgrade and trust-tier thresholds, and retain the evidence that justifies each update. Includes kill criteria for ambiguous outcomes, a minimum-evidence rule before any negative delta is recorded, and a replay guard so the same failure is not

Trust profiles for up to 50 agents in one call, for an agent fanning work out to several providers. Priced per agent checked.

Trust passport for any wallet or agent id, answerable even for a counterparty that has never touched Focxle. Two separate blocks: onchain (wallet age, USDC balance, transaction count, account type, OFAC SDN screening, and a 0-100 inference score) and focxle (reputation earned from settled payments here, tier, on-time vs failed counts, credit line, mandate and risk posture). Never blended, so you can tell public chain facts from behaviour we witnessed.

Win-share bid framing (0.015 USDC). Free: GET /v0/sample-win-share then POST {brief,reward}.

Look up a Twitter/X user profile by their screen name. Returns full profile data including id, name, username, bio, follower count, following count, tweet count, verification status, and profile image URL. Query param: username (string, required) - Twitter screen name without @, e.g. GET /users/by/username?username=elonmusk. Returns X v2 API-compatible JSON.

Agent-readiness audit of a domain: parallel SSRF-guarded probes of the six discovery surfaces agents read (/.well-known/x402.json, /.well-known/agent.json, /openapi.json, /llms.txt, /robots.txt, /.well-known/mcp.json) with key-field validation, a weighted 0-100 score and specific fix-it recommendations

Bundled execution of the Macro dashboard refresh workflow - The full macro + crypto dashboard in one call: 5 FRED series, 5 Treasury reads, yield-curve spread, crypto market/trending/global, and live gas - the 14-tool basket recurring buyers refre...

Bundled execution of the Locale brief workflow - "Can I reach this counterparty this week?" - country facts, this year's public holidays, working days remaining this week, and what time it is there right now, in one call. One x402 payment runs 4 u...

Grade any x402 seller's payment-security posture from the outside — a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, gated-response cache hygiene ...

OpenAI-compatible text-to-speech over x402 — point any OpenAI SDK's audio.speech.create() at base_url https://agent402.tools/v1 and pay $0.06 per call in USDC, no API key, no signup. Served by Voxtral Mini TTS behind a five-model failover chain (x...

Bundled execution of the Subtitle pipeline workflow - Audio URL → finished subtitles in one call: transcribe the audio, emit the transcript as SRT/WebVTT/JSON cues, and report the text statistics - length, reading time, word count. One x402 paymen...

Describe a task (or name a slug) and the Smart Order Router resolves the best-matching tool and RUNS it in the same call - flat $0.05 covering any tool listed at $0.04 or less, from THIS host's catalog or any external x402 seller in the open index...

Full decoded transaction on any Blockscout-hosted chain: status, from/to, value, gas, the decoded method + parameters, and token transfers - bought per call from Blockscout's Pro API over x402, no API key. What a tx actually did, on dozens of chai...

Bundled execution of the Agent wallet readiness check workflow - One call answers 'can this wallet pay right now?' - USDC balances on Base AND Solana, live Base gas, and a ready-to-share Coinbase Onramp funding link if it's running dry. One x402 p...

Describe a task (or name a slug) and the Smart Order Router resolves the best-matching tool and RUNS it in the same call - flat $0.55 covering any tool listed at $0.5 or less, from THIS host's catalog or any external x402 seller in the open index ...

Fetch contract event logs (eth_getLogs) on Ethereum, Base, Polygon, Arbitrum, or Optimism - bounded so it always answers: block range capped at 2000 blocks (default: the last 100, auto-narrowed for busy contracts), at most 200 logs returned (trunc...

Momentum radar for the x402 seller ecosystem - which sellers are heating up, graded for wash-trade resistance. Reads the hourly on-chain leaderboard (real Base USDC settlements) and adds per-seller signals the raw board doesn't have: organicScore ...

What agents actually pay for on a 500+ tool x402 catalog - the paid intelligence layer over Agent402's own sales ledger, the one demand signal that never reaches the chain (settlements are on-chain; WHICH tool was bought is not). Aggregate sales t...

Mint a stateless captcha challenge to gate your OWN endpoint: returns a human prompt plus a salted sha256 answer hash you keep and verify later (sha256(salt + normalized answer) === answerHash) — no server state, no shared secret. Types: math (ari...

Who owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint failover. ?contract=0x…&tok...

Review a SQL statement an agent is about to run against production, and certify it. Returns a policy verdict (pass / warn / block) with named risks - unbounded UPDATE or DELETE, tautological WHERE, DROP, TRUNCATE, DROP COLUMN, statement stacking, ...

Deep contract inspection on any Blockscout-hosted chain (dozens: Ethereum, Base, Polygon, Optimism, Arbitrum, Celo, Gnosis, …): verified source, full ABI, proxy type + implementations, compiler + license metadata - bought per call from Blockscout'...

Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card — tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) — and validate it against the spec v0.3 structural core. Returns the card, er...

All token balances for any address in one call, from Coinbase's indexed data API — ERC-20 + native on EVM, SPL on Solana; no per-token contract calls, no RPC wrangling. Networks: base, ethereum, base-sepolia, solana, solana-devnet. Symbols/decimal...