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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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153 results
RecallScoutAI & agentsProduct recalls (US): is a product, brand, food, drug, medical device or vehicle (make, model, year) under an active FDA, NHTSA or CPSC recall? Severity on one scale, hazard, remedy and lot codes. RecallScout
BaseArbitrumPolygon+2recallscout.scalpstream.comfrom $0.011 endpoint- Aagoraverify.comData & research
Official French company data (SIRENE/RNE), cleaned: identity, geolocated HQ, NACE code, headcount, latest revenue and net income.
BaseArbitrumagoraverify.comfrom $0.0041 endpoint - CCurrency Exchange RateMarkets & finance
Get current exchange rate between two currencies using ECB data. Supports all major currencies. Returns rate, inverse rate, and date.
BasePolygonArbitrum+1exchange.use.x402atlas.comfrom $0.011 endpoint - UUS Overnight RatesMarkets & finance
US overnight interest rates — latest SOFR and effective federal funds rate (EFFR), transaction volumes and policy target bounds. Compare secured and unsecured dollar funding costs and track monetary policy. x402Atlas is not affiliated with the New York Fed. The New York Fed does not sanction, endorse, or recommend any products or services offered by x402Atlas.
BasePolygonArbitrum+1us-rates.use.x402atlas.comfrom $0.011 endpoint - IImage Optimizer & WebP ConverterImages, audio & video
Convert and compress images to WebP, AVIF, JPEG or PNG. Optimize and shrink photos for web and CDN delivery from any image URL.
BasePolygonArbitrum+1imgopt.use.x402atlas.comfrom $0.011 endpoint - UUS Treasury Interest CostsMarkets & finance
US Treasury interest rates — latest monthly average rates on outstanding government debt, including Treasury bills, notes, bonds, TIPS, floating-rate notes and savings securities. Track federal borrowing costs and compare rates across security classes.
BasePolygonArbitrum+1us-treasury-interest.use.x402atlas.comfrom $0.011 endpoint - Aapi.webextract.devSearch & web
Fetch a public web page (robots.txt respected) and return cleaned Markdown plus fixed-schema JSON: article metadata, product/price, and tables with row/column checks.
BasePolygonArbitrum+4api.webextract.devfrom $0.0022 endpoints - SSEC Filings & FinancialsMarkets & finance
SEC company financials by ticker — normalized annual and quarterly revenue, income, balance-sheet, cash-flow and EPS facts.
BasePolygonArbitrum+1sec.use.x402atlas.comfrom $0.0053 endpoints - Ssocialintel.devSocial & people
No description yet.
BaseSolanaPolygon+1socialintel.devfrom $0.011 endpoint - Ppegproof.comCrypto & DeFi
Current summary row for one Robinhood tokenized-stock token: total supply, treasury balance, multiplier, and whether the queried address is a known look-alike of a tracked token. Identify by ticker or exact contract address. On-chain observations reconstructed from chain event logs, not financial advice.
BaseArbitrumpegproof.comfrom $0.0022 endpoints - GGiftPulseSearch & web
Search Reloadly's gift card catalog (300+ brands, 14,000+ products/denominations across countries). Returns each product's id, brand, country, denomination range or fixed amounts, and sender fee/discount — everything needed to build a POST /api/giftcard/quote call.
BaseSolanaPolygon+8giftpulse.theaslangroupllc.comfrom $0.011 endpoint - CCanadian Rates and YieldsMarkets & finance
Compare Canadian interest rates and government bond yields using the latest available Bank of Canada policy rate and six benchmark maturities. Track monetary policy, benchmark borrowing costs and compare the yield curve. Original data is available free at bankofcanada.ca.
BasePolygonArbitrum+1canada-rates.use.x402atlas.comfrom $0.011 endpoint - GGlobal Legal EntitiesSocial & people
Company name search — find Legal Entity Identifiers (LEIs), legal names, jurisdictions and registration status. Get up to ten matches per page to identify counterparties, distinguish similarly named companies and enrich company reference data.
BasePolygonArbitrum+1legal-entities.use.x402atlas.comfrom $0.011 endpoint - PPolymarket EventsCrypto & DeFi
Prediction market events by topic — page through open or closed Polymarket events under one tag such as politics, crypto, economy, geopolitics or ai, each with status, dates, volume, liquidity and markets with current YES prices. Use to survey what a prediction market is pricing on a subject.
BasePolygonArbitrum+1polymarket.use.x402atlas.comfrom $0.012 endpoints - MMailPulseImages, audio & video
Check the status and tracking of a physical letter previously sent via POST /api/letters. Returns render status, expected delivery date, and (for certified mail) the USPS tracking number.
BaseSolanaPolygon+8mailpulse.theaslangroupllc.comfrom $0.0052 endpoints - Aapi.xona-agent.comImages, audio & video
ElevenLabs text-to-speech: convert text to speech (MP3) (Base Mainnet).
SolanaArbitrumEVM chain 1187947933+1api.xona-agent.comfrom $0.001420 endpoints - CChat Completion (basic)Crypto & DeFi
LLM completion per call, no account and no API key: POST a prompt (or a messages array) and get the model answer as JSON. Hard caps disclosed in every response (6,000 UTF-8 bytes in, 750 tokens out on this tier). Fixed price per call, signed receipt included so the answer stays auditable. Larger tier at /x402/chat-plus.
BaseArbitrumPolygon+1api.eucompliance.toolsfrom $0.00123 endpoints - WWikidata Entity SearchSocial & people
Wikidata entity search — find the Wikidata item for a person, organisation, place, work or concept by name or alias, in any language, with id, label, description and which term matched; or find a property by name. Use to get the Q-id before asking for an entity's facts, identifiers or links.
BasePolygonArbitrum+1wikidata.use.x402atlas.comfrom $0.011 endpoint - PPulseNetworkMarkets & finance
How to make money with AI — one tailored business-in-a-box. Give a goal, budget and interests; get a specific business to start now: the exact real-time PulseNetwork API engine to build it on, suggested pricing, unit economics, monetization paths, and a fork-and-ship starter kit. Turns 'find me a way to earn / passive income / start a business' into a concrete plan. For agents tasked with making m
BaseSolanaPolygon+8pulse.theaslangroupllc.comfrom $0.011 endpoint - UUS Treasury Interest CostsMarkets & finance
US Treasury interest rates — latest monthly average rates on outstanding government debt, including Treasury bills, notes, bonds, TIPS, floating-rate notes and savings securities. Track federal borrowing costs and compare rates across security classes.
BasePolygonArbitrum+1avg-interest-rates.use.x402atlas.comfrom $0.011 endpoint
DeepCounterfeitCrypto & DeFiDeepCounterfeit pre-buy check for 8QtbrC9d3BezyCwzBFUQbNsWJGte7ckrZ7HWcn81pump (risk signals, informational only, not financial advice)
BaseSolanaPolygon+1deepcounterfeit.comfrom $0.011 endpoint- Aapi.borisinc.comOther services
No description yet.
BaseSolanaPolygon+1api.borisinc.comfrom $0.0011 endpoint
DevX Token Safety & HoneypotCrypto & DeFiHoneypot check, rug check and token safety check: is this token safe or a scam? Token verdict (safe/caution/danger), 0-100 token risk score and reasons. Chains: Base, Ethereum, Arbitrum, Optimism, Polygon, Robinhood Chain, Solana. Honeypot detector (EVM): simulated buy/sell with real tax. Rug check incl. Solana: owner, mint, blacklist, pause, proxy, mint/freeze authority, liquidity, holders, age.
BasePolygonArbitrum+2tokencheck.madebydevx.comfrom $0.011 endpoint- EEdge Agents AICrypto & DeFi
Euro Area M3 from official ECB statistics, normalized for autonomous-agent use with explicit source timing, evidence and limitations. Purpose: give an agent the latest available euro area m3 with recent official history and source timing 24-hour freshness target; missing evidence is reported explicitly rather than invented.
BasexrplSolana+2edge-agents.aifrom $0.011 endpoint
YourAITools CreditsCrypto & DeFiPrepaid API credits (sample pack). Prepaid credits for the YourAITools agent APIs: one x402 payment of $0.005 USDC mints an API key holding $0.005 of credits. Send it as Authorization: Bearer <key> to PayGuard, TokenVerdict, SignCheck, WebRead, InjectScan, DomainCheck, PkgGuard, StackDetect or AgentGate paid routes; each call debits its normal price instead of an on-chain payment. Key shown once.
BasePolygonArbitrum+1credits.agentgate.workers.devfrom $0.0051 endpoint
Tanod chainpeekCrypto & DeFichainpeek (Tanod) Solana SPL token mint info: supply, decimals, authorities. Read-only. Use when an agent needs an SPL token mint's supply, decimals and authorities on Solana.
BasePolygonSolana+2chain.tanod.devfrom $0.0021 endpoint- Aapi.datanexusai.orgData & research
Eurostat Comext trade facts (value and quantity).
BasePolygonArbitrumapi.datanexusai.orgfrom $0.013 endpoints - AAgent HubCrypto & DeFi
JSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.
BasePolygonArbitrum+1agents.torbrooknews.comfrom $0.0011 endpoint
Citiview Agent MarketCrypto & DeFiJSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.
BasePolygonArbitrum+1agents.citiviewgroup.comfrom $0.0021 endpoint
AgentRXICrypto & DeFiJSON-RPC read access to EVM chains (base, ethereum, polygon, arbitrum, optimism) with no API key. Send a standard JSON-RPC body (eth_call, eth_getBalance, eth_blockNumber, eth_getLogs). Also callable as GET with the same fields as query parameters.
BasePolygonArbitrum+1agentrxi.comfrom $0.0021 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.