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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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Data & research
285 results- Ccloudmaxi0x.comData & research
Deterministic OHLCV for an exact half-open range, with a SHA-256 Merkle manifest. Only closed candles are returned - a forming candle would hand you lookahead. Exchange decimal strings are preserved byte for byte, so the same query always yields the same root. Gaps and exchange revisions are reported rather than silently applied.
Basecloudmaxi0x.comfrom $0.00114 endpoints - Cchangecheck-mainnet-production.up.railway.appData & research
Detect meaningful changes on a public webpage compared with a previous snapshot. Useful for prices, deadlines, availability, tenders, policies and status monitoring.
Basechangecheck-mainnet-production.up.railway.appfrom $0.021 endpoint - BBrasil Data x402Data & research
Brazilian company (CNPJ) registry lookup from Receita Federal open data, normalized: legal/trade name, status, CNAE activities, address, Simples/MEI, partners (QSA). Supports alphanumeric CNPJ.
Basebrasil-data-x402.wagner-proc.workers.devfrom $0.0052 endpoints - BBaseNameData & research
Resolves ENS/Basename to an address using cached ENS Ideas data.
Basebasename-x402.vercel.appfrom $0.011 endpoint - Aastro.dutchdata.ioData & research
Location data
Baseastro.dutchdata.iofrom $0.018 endpoints - Aaster-vale-audit402.shares.zrok.ioData & research
Free zero-charge live sample returning five findings plus the purchase link for a $0.002 Audit402 report with implementation-ready remediation artifacts.
Baseaster-vale-audit402.shares.zrok.iofrom Free1 endpoint - Aapiv2.laevitas.chData & research
Cross-market contract reference data — list endpoint. Pay per request.
BaseSolanaapiv2.laevitas.chfrom $0.1028 endpoints - AgentPay Evidence BriefData & research
Cited, conflict-aware JSON intelligence brief for current-market, company, technology and regulatory questions. Returns source-bound findings, freshness, conflicts, validation evidence and a verifiable receipt.
Baseapi.x402-engine.comfrom $0.101 endpoint - Aapi.willowbirdie.comData & research
Static APK triage report
Baseapi.willowbirdie.comfrom $0.051 endpoint - Aapi.drayn.onlineData & research
Check supplied OHLCV candles for missing intervals, duplicates, ordering, UTC alignment, OHLC relationships and negative volume. Returns FIT or NOT_FIT with defects and a dataset hash. Structural validation only: no data fetching, source authentication or trading advice. Completed checks cost 0.01 USDC even when NOT_FIT. Maximum 5000 rows/expected intervals and 1 MiB JSON; rows or CSV inside JSON.
Solanaapi.drayn.onlinefrom $0.013 endpoints - Aapi.climateassured.comData & research
SB 253 / California climate reporting coverage verdict from the ClimateAssured rule tree (likely covered or not, with reasons). Informational only; verify with CARB. Free human checker at climateassured.com/am-i-covered/
Baseapi.climateassured.comfrom $0.052 endpoints - AAIFoundry WeatherData & research
Current weather for any place on earth. Give a city name or a latitude/longitude pair; get temperature, conditions, wind and humidity.
Baseapi.aifoundry.shfrom $0.011 endpoint - Aaltairworld.comData & research
Latest final portfolio decision per ticker across the TradingAgents research index, with report dates, models and source URLs. Optional ticker and inclusive date filters; ten-minute cache. Free three-ticker preview at /api/research/signals/sample.
BaseArbitrumaltairworld.comfrom $0.011 endpoint
AlionData & researchCompanies by industry, country, size, technology and hiring: A list of companies narrowed by any of those filters, each row with its basic card; a slice can be added to every row.
BaseSolanaEthereumalion.iofrom $0.013 endpoints- Aaijobsboom-x402.sonofgus.workers.devData & research
Weekly US blue-collar job-market snapshot: oilfield, mining, data-center construction; trade counts, wage floors with sample sizes, per-diem/travel/sign-on flags, rig count, EIA prices, grid demand, aggregator share, verified buildout announcements. Updated Sundays.
Solanaaijobsboom-x402.sonofgus.workers.devfrom $0.011 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.