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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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4,150 results
blockint.aiCrypto & DeFiScreen one address (EVM, BTC, Tron, Solana, DOT, XRP, XLM, DOGE, LTC, DASH, STX, TON, Cosmos or wax:account) against the OFAC SDN list, Tether/Circle freezes (EVM, Tron, Solana) and C3 reports. Returns action BLOCK (OFAC SDN match), REVIEW (reported or frozen; current freeze = HIGH) or ALLOW_NO_REPORTS, riskScore, riskLevel, sanctions, freezes, reports, related domains, co-occurring addresses. NON
BaseSolanablockint.aifrom $0.016 endpoints- Eemail-verify-api-production-d262.up.railway.appDeveloper tools
Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.
Baseemail-verify-api-production-d262.up.railway.appfrom $0.0013 endpoints - SSchemaSureAI & agents
Extract strict, JSON-Schema-valid typed JSON from unstructured text or HTML. Failed extraction calls are not settled. Primary x402 V2 API for production agents.
Baseschemasure.comfrom $0.022 endpoints - Aagents.datamancer.ioCrypto & DeFi
VIN decode (x402; 402 first, $0.005, Base then Solana)
BaseSolanaagents.datamancer.iofrom $0.0051 endpoint
Address RiskCrypto & DeFiScreen an EVM wallet or contract address BEFORE paying it. Deterministic, keyless compliance / safety gate: checks the address against the OFAC sanctioned crypto-address list and a curated taint set (mixer, hack, scam) and returns a single BLOCK / REVIEW / ALLOW recommendation plus the matched sources, so an AI agent can decide whether to send funds. No API keys, no LLM, one x402 USDC micropayment
Basesanctions.cyberwarex.comfrom $0.0051 endpoint- Eemoji.todayOther services
Cast a paid vote for today's emoji election on emoji.today
Baseemoji.todayfrom $0.011 endpoint - Aapi.seerium.xyzCrypto & DeFi
News prediction market catalyst API for agents. Ranks prediction market signals by freshness, confidence, urgency, liquidity, and probability context.
BaseSolanaapi.seerium.xyzfrom $0.1025 endpoints - TTraceFastCrypto & DeFi
TraceFast knowledge graph: what an Ethereum address is, as proven facts — wallet or contract, proxy and upgradeable or not, a token and its standard, and for a token contract whether it can pause, mint or blacklist and whether it ever did. Each fact names the block it was evaluated at; an absent fact is not proven. Ethereum mainnet only. Path address: 0x-prefixed, 40 hex. Attribute dictionary: htt
Basempp.tracefast.xyzfrom $0.00519 endpoints - OOfficial Macro & FX DataMarkets & finance
Use when an agent needs the official inflation rate (year-on-year consumer prices) for a country: Eurostat HICP for the euro area, EU and 36 European countries (incl. CH, NO, TR) and US CPI-U from the Bureau of Labor Statistics. Latest month plus up to 36 months of history, flash estimates flagged. Source named in every answer. Bad input: HTTP 400 before payment; outage is not charged.
Basex402-apis.pages.devfrom $0.0025 endpoints - AAgent Data PlatformSearch & web
NSW Development Applications: Search NSW development applications by council, suburb, postcode or lodgement date, newest lodgement first.
Baseagent-data-platform.langtools.workers.devfrom $0.00516 endpoints
402rpcCrypto & DeFiOn-chain spot price of ETH or BTC in USDC from the deepest Uniswap v3 pools on Ethereum mainnet, read from a full node at the latest block (no third-party price feed). Pairs: ETH-USDC, BTC-USDC. Use it as an independent, verifiable price reference; it reflects the pool price, not an exchange average.
BasePolygonArbitrum402rpc.comfrom $0.0015 endpoints- MMacroPulseCrypto & DeFi
Is the stock market open right now? Deterministic market-status and trading-hours for the major global exchanges — NYSE, NASDAQ, LSE, Xetra, Euronext, TSE/JPX, HKEX, SSE, ASX, TSX, SIX, NSE/BSE. Returns is_open plus why it is shut (weekend, holiday, lunch break, pre/after-hours), the exchange local time, and the next open and close as ISO timestamps. Pass ?at= for any past or future moment. Zero e
BaseSolanaRobinhood Chain+9macropulse.theaslangroupllc.comfrom $0.00513 endpoints - GGeo CalcSearch & web
Bounding box (min/max latitude and longitude) enclosing a radius in meters around a point, with pole and 180 degree handling.
BaseSolanaPolygon+1geo-calc.x402tookit.comfrom $0.0212 endpoints - Ccc0.companyImages, audio & video
cc0.company — x402 agent-services marketplace on Base (USDC): CC0 image generation, market-data digests, and third-party agent tools. This endpoint: Sartoshi Generator, Generate 1/1 hand-drawn mfer art in the style of sartoshi (CC0). Thin wobbly ink lines, naive doodle style. Fine-tuned by cc0toshi on a public-domain corpus. CC0 output. Async — returns a job_id to poll.
Basecc0.companyfrom $0.0110 endpoints - PPennyAPI Web SearchSearch & web
Real-time web search for AI agents. Search the web for current and up-to-date information, news, facts, research, documentation, and sources beyond model training data. Returns ranked structured JSON results with title, URL, description, and position for web grounding, RAG retrieval, research, and fact-finding. Send query, optional limit, and optional freshness as URL parameters. Keyless x402 pay-
Basepennyregwatch.comfrom $0.0017 endpoints - Aapi.creativeforesight.ioOther services
Foresight API /v1/ask
Baseapi.creativeforesight.iofrom $0.019 endpoints - Ppaddock.financeMarkets & finance
Agent payments have no chargeback. Paddock is pre-payment verification for AI agents. get_liveness reports whether a seller's domain answered at the nightly probe over the last seven days, with latency and sample counts.
Basepaddock.financefrom $0.0015 endpoints - Xx402-defi-signals.onrender.comCrypto & DeFi
One-call market snapshot: BTC/ETH/SOL spot prices with 24h change plus the Crypto Fear & Greed index. The cheapest way for an agent to establish market context.
Basex402-defi-signals.onrender.comfrom $0.0022 endpoints - MmagentOther services
Map a natural-language drug, diagnosis, or lab phrase to a current RxNorm, ICD-1
Baseapi.magentlab.comfrom $0.0054 endpoints - SStableFinanceMarkets & finance
Recent articles. With ticker: company news. Without: market news.
BaseSolanastablefinance.devfrom $0.028 endpoints - Sshield.vainplex.devOther services
ShieldAPI - x402 security preflight before agents accept or store credential material
Baseshield.vainplex.devfrom $0.0014 endpoints - CClimatePulseAI & agents
Is wildfire smoke affecting the air here right now? Smoke tracker — AQI estimate, nearby active fires, health risk level, mask and indoor-air guidance, and evacuation status for any location.
BaseSolanaPolygon+8climatepulse.theaslangroupllc.comfrom $0.0510 endpoints
Base wallet balancesCrypto & DeFiReturns the native ETH balance and ERC-20 token balances of one Base wallet address, read live from Base mainnet at the latest block: USDC, WETH and the rest of the top 200 Base tokens by market cap, plus up to 50 token contract addresses named in the request. Each row carries the token symbol, name, decimals, raw amount and human-readable amount. Suited to checking a wallet's current holdings bef
Baseapi.botx402.iofrom $0.011 endpoint
Olive MarlinAI & agentsx402 catalogue change history - Returns the observed change history of the public x402 facilitator catalogue: the newest appearance, disappearance, price and terms changes per tracked resource, plus observation coverage and its caveats. Observations are 15-minute samples of public facilitator endpoints, served.
Basex402-catalogue.agent.amnt.iofrom $0.011 endpoint- Ddeltasignal-mcp-gcp-canary-mhaufviwaq-uc.a.run.appAI & agents
ATLAS covenant stress detail for one issuer.
Basedeltasignal-mcp-gcp-canary-mhaufviwaq-uc.a.run.appfrom $0.063 endpoints - Bbusiness.agentum.latOther services
Counterparty pre-check for a Brazilian company: GET /preflight-cdp?q=<CNPJ (14 digits) | LEI code | company name>, e.g. ?q=68964713000109. Returns entity, status, band (clear/flagged/insufficient_data), flags and sources (Receita Federal, TCU, CNIA, CEIS, CNEP, CVM / GLEIF). Missing or invalid q = 400, no payment settled. — Mesmo dado do /preflight, liquidado pelo Facilitador CDP da Coinbase.
Basebusiness.agentum.latfrom $0.023 endpoints - NNZ Data APIData & research
Validate and normalise an NZ phone number to E.164 with type
Basenzdata.zakwins.workers.devfrom $0.0018 endpoints - GG-Forge Select CSV ColumnsData & research
Create a focused CSV export with only the columns you need. Select and reorder 1–32 named columns from supplied CSV text. Preserves row order and decoded cell text, then writes correctly quoted CSV. Missing columns are rejected. Useful for cleaner spreadsheet and API handoffs.
Baseapi.getretold.comfrom $0.0112 endpoints - CCrypto Market DataCrypto & DeFi
Real crypto market data in one batched call: price, market cap, market-cap rank, 24h volume/high/low/change, circulating/total/max supply, and all-time-high with date -- for BTC, ETH, SOL, and 17+ other major coins by ticker. Richer than a plain price feed: most stock-data APIs' crypto tickers report null market cap. From CoinGecko. $0.005/call.
BaseSolanax402-stock-indicators.vercel.appfrom $0.00510 endpoints - EEDGAR Fundamental ScoresCrypto & DeFi
Cheapest way to test this API and your x402 wallet. Returns the same one-line healthy/watch/distress verdict + fraud-risk flag as /v1/verdict, for one of these sample tickers: AAPL, MSFT, NVDA, TSLA, META, BRK-B, JPM, CVX, KO, SMCI (query ticker=, default AAPL). Data: SEC EDGAR 10-K XBRL. Errors are never charged (bad tickers rejected before payment; failed calls not settled).
Basefundamental-scores-x402.onrender.comfrom $0.00111 endpoints
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.