x402watch

52,644 paid endpoints are listed. 27,290 answered a real 402 at the last check.

Every x402 endpoint on the Coinbase Bazaar and x402scan, probed unpaid every six hours. A listing tells you the price a seller wrote down. This tells you whether the endpoint is reachable, whether it charges what it declared, and how fast it answers. Ranked by an assay score out of 100.

Last check 2026-10-09 06:29 UTC · 52,644 probed

27,290 answering 40220,119 down4,243 rejecting992 no paywall1,829 price drift
  1. 89api.ambolt.dev/v1/solana-token-factsSolana Token Facts: Authorities, Supply, Holder Concentration$0.01 Base440 ms–100% up
  2. 89manyfish-seller.redcliff-d7368db1.westus2.azurecontainerapps.io/api/v1/image/objectsImage Objects API$0.007 Base335 ms–100% up
  3. 89manyfish-seller.redcliff-d7368db1.westus2.azurecontainerapps.io/api/v1/content/html-to-markdownHTML-to-Markdown Converter$0.003 Base409 ms–100% up
  4. 89manyfish-seller.redcliff-d7368db1.westus2.azurecontainerapps.io/api/v1/image/analyzeImage Analysis API$0.016 Base406 ms–100% up
  5. 89api.ambolt.dev/v1/base-token-factsBase Token Facts: Owner, Proxy, Pause and Mint Powers$0.01 solana310 ms–100% up
  6. 89api.ambolt.dev/v1/doi-lookupDOI Lookup: Paper Metadata and Citation Counts$0.003 Base462 ms–100% up
  7. 89api.ambolt.dev/v1/eu-vat-validateEU VAT Number Validator$0.003 Base459 ms–100% up
  8. 89api.ambolt.dev/v1/solana-token-searchSolana Token Search: Mint, Symbol, Verification and Liquidity$0.003 Base312 ms–100% up
  9. 89api.ambolt.dev/v1/tender-feedTender Feed: EU, UK and US Public Procurement, One Schema$0.02 Base429 ms–100% up
  10. 89api.vinoandviews.online/v1/x402-health-checkPost X402 Health Check$0.15 Base368 ms–100% up
  11. 89x402-gateway-production-1f21.up.railway.app/chain/block-numberLatest EVM block height for Base or Ethereum via eth_blockNumber. Use for chain-tip checks, block polling, synchronization, indexers, trading agents and recurring blockchain monitoring.$0.001 Base303 ms–100% up
  12. 89206-81-14-131.sslip.io/svc/agent-services/validateValidate one URL-encoded JSON document against a bounded JSON Schema subset. Required json and schema query parameters; $0.0025 Base433 ms–100% up
  13. 89206-81-14-131.sslip.io/svc/nws-forecast/forecastFetch the latest NWS hourly forecast for a US coordinate. Returns up to 24 normalized periods and the forecast issuance $0.005 Base301 ms–100% up
  14. 89geld-machen-x402.fly.dev/product/phantom-allowlist.jsonSigned phantom allowlist ($0.03 USDC Base)$0.03 Base347 ms–100% up
  15. 89councilof.ai/api/pop/claim-watchPopulation slice: Claim-maintenance registries$0.01 Base445 ms–100% up
  16. 89councilof.ai/api/pop/xrplPopulation slice: XRPL issued-asset set$0.01 Base404 ms–100% up
  17. 89councilof.ai/api/wrapper/asset/daiissuance door — /api/wrapper/asset/dai$0.01 Base351 ms–100% up
  18. 89x402-agent.kariguetoazul.workers.dev/api/units/volume/cubic-meter-to-cubic-centimeterConvert cubic metres to cubic centimetres for volume. SI/international definitions; IEEE-754 numeric precision. This is a specialised route of the volume converter, not a separate data provider.$0.001 Base363 ms–100% up
  19. 89councilof.ai/api/request-attestationCommission a signed card (request-attestation)$0.01 Base455 ms–100% up
  20. 89afterwren.cybermaxtools.com/x402/api/companies/suggestCompany autocomplete with the free-tier limits wrapped around the results (pay per call in USDC via x402, no key)$0.002 Base382 ms–100% up
  21. 89afterwren.cybermaxtools.com/x402/api/searchEncyclopedia search after Bing Search API: Wikipedia titles, URLs and snippets (pay per call in USDC via x402, no key)$0.002 Base393 ms–100% up
  22. 89afterwren.cybermaxtools.com/x402/api/geocodeAddress or place to coordinates (US Census with FIPS, OpenStreetMap worldwide) (pay per call in USDC via x402, no key)$0.002 Base317 ms–100% up
  23. 89squeezeos-api.onrender.com/api/ftd/ratio/%7Bsymbol%7DFTD percentile API — return the latest fails-to-deliver record and its rolling-window percentile for one ticker$0.03 Base518 ms–100% up
  24. 89kevscope-api.cybermaxtools.com/x402/api/kev/recentCVEs added to CISA KEV in the last N days, with EPSS (pay per call in USDC via x402, no key)$0.003 Base354 ms–100% up
  25. 89orbitwren.cybermaxtools.com/x402/api/projectsOrbital compute and space data center projects, with sources (pay per call in USDC via x402, no key)$0.003 Base506 ms–100% up
  26. 89domaindna-api.cybermaxtools.com/x402/api/techTech stack of up to 3 websites, with evidence (pay per call in USDC via x402, no key)$0.005 Base466 ms–100% up
  27. 89hireheat-api.cybermaxtools.com/x402/api/jobsEvery open job at one company, newest first, with keyword and remote filters (pay per call in USDC via x402, no key)$0.012 Base568 ms–100% up
  28. 89bonafido.cybermaxtools.com/x402/api/verifyVerify up to 5 business domains (optionally against a company name) (pay per call in USDC via x402, no key)$0.025 Base370 ms–100% up
  29. 89domaindna-api.cybermaxtools.com/x402/api/email-securityEmail provider, SPF and DMARC for up to 5 domains (pay per call in USDC via x402, no key)$0.005 Base304 ms–100% up
  30. 89swellmeter-api.cybermaxtools.com/x402/api/topicDid a topic trend in the last 30 days? Where and when? (pay per call in USDC via x402, no key)$0.004 Base340 ms–100% up
  31. 89squeezeos-api.onrender.com/api/741macroMacro regime analysis API for AI agents — evaluate caller-selected stock symbols with SML's configured 741 structural matrix after live-data preflight$0.04 Base364 ms–100% up
  32. 89fieldwright.cybermaxtools.com/x402/api/extractOne URL to Markdown + metadata (no-key mode) (pay per call in USDC via x402, no key)$0.004 Base308 ms–100% up
  33. 89haulroll-api.cybermaxtools.com/x402/api/alertsMonitor a carrier list: FMCSA events in the last N days (pay per call in USDC via x402, no key)$0.03 Base318 ms–100% up
  34. 89squeezeos-api.onrender.com/api/ftd/cycle/%7Bsymbol%7DFTD settlement-cycle API — return a descriptive SEC-data bundle with calendar T+21 and T+35 markers for one ticker without predicting price action$0.05 Base520 ms–100% up
  35. 89squeezeos-api.onrender.com/api/iam/%7Bsymbol%7DMarket action-resolution API — return SML IAM BUY, SELL, or HOLD decision-support output with rationale, invalidation, and review trigger for one symbol$0.05 Base323 ms–100% up
  36. 89squeezeos-api.onrender.com/v1/livewire/prediction/intelligenceReal-time prediction-market intelligence API for AI agents — inspect one current official Robinhood event contract with retained probability replay, movement velocity, shock state, resolution-risk completeness checks, and evidence-bounded machine output$0.005 Base426 ms–100% up
  37. 89ziplore.cybermaxtools.com/x402/api/zipLook up up to 10 US ZIP codes (pay per call in USDC via x402, no key)$0.002 Base442 ms–100% up
  38. 89ziplore.cybermaxtools.com/x402/api/cityEvery ZIP of a city, largest first (pay per call in USDC via x402, no key)$0.002 Base597 ms–100% up
  39. 89pinloft.cybermaxtools.com/x402/api/reverseReverse geocode up to 5 points (street address + US FIPS and districts) (pay per call in USDC via x402, no key)$0.002 Base310 ms–100% up
  40. 89tokenintel-api.onrender.com/v1/token/usdcTokenIntel: analyze native USDC on Base$0.05 Base354 ms–100% up
  41. 89x402.datakoot.com/api/filing_searchFiling Search (Filings Intel)$0.002 Base370 ms–100% up
  42. 89x402.datakoot.com/api/weather_forecastWeather Forecast (Weather & Geo)$0.002 Base372 ms–100% up
  43. 89x402.datakoot.com/api/domain_reportDomain Report (Domain Intel)$0.002 Base377 ms–100% up
  44. 89x402.datakoot.com/api/agenciesAgencies (Regulatory Intel)$0.002 Base347 ms–100% up
  45. 89astro-agents-api.vercel.app/v1/vedic/kundliKundli (Vedic birth chart) ($0.15)$0.15 Base507 ms–100% up
  46. 89x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-holdersHighest-demand x402 services tagged 'holders': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 19 providers and 22 paying wallets measured in this tag.$0.032 Base588 ms–100% up
  47. 89x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-analystsHighest-demand x402 services tagged 'analysts': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 161 providers and 245 paying wallets measured in this tag.$0.008 Base525 ms–100% up
  48. 89x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-statsHighest-demand x402 services tagged 'stats': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 59 providers and 127 paying wallets measured in this tag.$0.032 Base506 ms–100% up
  49. 89api.aurenic.org/summarize/%7Bb64%7DFetch a URL and return a concise summary$0.005 Base686 ms–100% up
  50. 89astro-agents-api.vercel.app/v1/western/transitsTransits ($0.08)$0.08 solana492 ms–100% up
  51. 89agent-press-wire.dylan-caponi.workers.dev/v1/wire-releaseNewswire distribution to 500+ news sites and 100+ TV/radio sites$99.00 Base926 ms–100% up
  52. 89stockbloc.ai.studio/api/v1/data/secSEC 13F Institutional Accumulation Alias (x402: $0.10 USDC)$0.10 Base567 ms–100% up
  53. 89x402-gateway-production-1f21.up.railway.app/wallet-activityMonitor recent USDC or ERC-20 transfers for one wallet. Returns incoming/outgoing activity and next_cursor for recurring stablecoin payment detection and treasury monitoring.$0.001 Base407 ms–100% up
  54. 89x402-gateway-production-1f21.up.railway.app/chain/transaction-statusCheck whether an EVM transaction is confirmed$0.001 Base345 ms–100% up
  55. 89exchange.blockle.org/x402/buyBuy BLOCK (POST body form).$1.00 Base669 ms–100% up
  56. 89readr.hatchagent.workers.dev/readExtract clean text from a web page$0.005 Base466 ms–100% up
  57. 89206-81-14-131.sslip.io/svc/x402-pricing-description-checklist/dl/x402-pricing-description-checklist.mdFull checklist: offer selection, price and cost worksheets, input/output examples, failure-path disclosures, and a post-$0.25 Base491 ms–100% up
  58. 89206-81-14-131.sslip.io/svc/product-barcode/productResolve one 8-14 digit product barcode into selected public product metadata and image URLs. One upstream lookup per cal$0.008 Base532 ms–100% up
  59. 89206-81-14-131.sslip.io/svc/content-quality-audit/auditAudit supplied plain text up to 20,000 characters. Returns word and sentence counts, approximate readability, heading co$0.01 Base505 ms–100% up
  60. 89206-81-14-131.sslip.io/svc/public-finance-data-source-map/dl/public-finance-data-source-map.mdFull map: 14 official public finance sources, field-level use cases, freshness notes, access patterns, and validation ch$0.25 Base486 ms–100% up
  61. 8995.216.126.169.sslip.io/v1/token-check/batchBatch Solana token safety checks (on-chain)$0.01 Base922 ms–100% up
  62. 89diomedes.tail1c6d58.ts.net/premium/datasets/%7Bname%7DDownload a dataset file (USDC per file)$0.02 Base736 ms–100% up
  63. 89fetchgate.dev/v1/buy/x402-quickstart-2026-08-23Buy: x402 Quickstart Kit — 2026-08-23 edition ($7.00)$7.00 Base534 ms–100% up
  64. 89zambo.dev/api/x402/day-passDAY PASS: 24 hours of Zambo MCP (132 tools) for $0.99 USDC on Base. One payment, no API key.$0.99 Base528 ms–100% up
  65. 89fetchgate.dev/v1/buy/x402-registry-2026-10-04Buy: x402 Services & Facilitator Registry — 2026-10-04 edition ($15.00)$15.00 Base348 ms–100% up
  66. 89mdaf.bbinntg.workers.dev/v1/erc20/balanceFetch ERC20 balance$0.003 Base311 ms–100% up
  67. 89veredicto-humano-x402.onrender.com/verdict/createPedí el juicio de una persona real sobre una pregunta subjetiva.$0.10 Base468 ms–100% up
  68. 89mini-tollbooth.onrender.com/auditTrollBridge lane: audit$25.00 Base435 ms–100% up
  69. 89oracle.cyberwarex.com/deployerDeployer reputation — prior honeypot/scam tokens from the deploying wallet (our ledger); dead launches excluded, shared-infra wallets exempt. A look-harder prior, not proof$0.01 Base835 ms–100% up
  70. 89api.chainward.ai/api/risk/x402Pay, Hold or Unknown for a Base or BNB Chain address, with the reason and the full report, paid per call over x402$0.05 Base800 ms–100% up
  71. 89oracle.cyberwarex.com/v1/risk/checkFull risk decomposition — per-dimension honeypot/rug/admin/liquidity/scam scores, confidence, contract privileges, dynamic-tax ceiling, effective controllers, a buy/sell simulation matrix, and non-honeypot scam detection (LP lock, holder concentration, supply inflation, liquidity trend, contract age)$0.03 Base947 ms–100% up
  72. 89search.cyberwarex.com/papersAcademic paper search (arXiv, PubMed, Semantic Scholar, OpenAlex)$0.003 Base994 ms–100% up
  73. 89oracle.cyberwarex.com/risk/explainAgent verdict — ALLOW/LIMIT/RECHECK/BLOCK with reason codes and an overall risk score$0.01 Base953 ms–100% up
  74. 89chain.cyberwarex.com/erc20-balanceERC-20 token balance of any wallet on Base, Ethereum, Arbitrum, Optimism or Polygon$0.001 Base955 ms–100% up
  75. 89search.cyberwarex.com/search-batchUp to 5 web searches in one call$0.01 Base946 ms–100% up
  76. 89chain.cyberwarex.com/balanceNative coin balance (ETH or POL) of any address on Base, Ethereum, Arbitrum, Optimism or Polygon, with USD value$0.001 Base632 ms–100% up
  77. 89oracle.cyberwarex.com/screenBatch screen — up to 25 tokens assessed in parallel (same engine as /token)$0.15 Base603 ms–100% up
  78. 89x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-registryHighest-demand x402 services tagged 'registry': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 161 providers and 206 paying wallets measured in this tag.$0.002 Base318 ms–100% up
  79. 89x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-markdownHighest-demand x402 services tagged 'markdown': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 110 providers and 289 paying wallets measured in this tag.$0.004 Base324 ms–100% up
  80. 89project-api-gamma-sable.vercel.app/paid/openfda/food-enforcementopenFDA food enforcement recalls (slim JSON + uiLink)$0.01 Base310 ms–100% up
  81. 89project-api-gamma-sable.vercel.app/paid/arxiv/searcharXiv Atom API preprint search (slim JSON + abs/pdf links)$0.01 Base318 ms–100% up
  82. 89api.aurenic.org/depwatch/%7Becosystem%7D/%7Bpkg%7DPackage health: latest version, age, deprecation$0.002 Base800 ms–100% up
  83. 89tableproof-data.mitchellwhite.chatgpt.site/store/toolkit.zipLocal CSV reconciliation Python source toolkit$19.00 Base576 ms–100% up
  84. 89api.aurenic.org/ofac/%7Baddress%7DOFAC SDN sanctions screen for a crypto wallet address$0.001 Base624 ms–100% up
  85. 89api.aurenic.org/whois/%7Bdomain%7DWHOIS/RDAP lookup: registrar, creation/expiry dates, nameservers$0.001 Base581 ms–100% up
  86. 89api.aurenic.org/ssl/%7Bhost%7DSSL certificate inspection: issuer, expiry, SANs, days remaining$0.001 Base573 ms–100% up
  87. 89api.aurenic.org/vat/%7Bcountry%7D/%7Bamount%7DVAT calculation: rate, net, gross for EU/UK countries$0.001 Base797 ms–100% up
  88. 89pricing-state-api.replit.app/api/sets/%7Bset%7D/changesPaid $0.01 USDC change feed across a set — charged only when a change was recorded after `since`.$0.01 Base330 ms–100% up
  89. 89www.api-xpay.com/x402/randomRandom Bytes$0.005 Base876 ms–100% up
  90. 89www.api-xpay.com/x402/wordcountWord Count$0.005 Base533 ms–100% up
  91. 89www.api-xpay.com/x402/slugSlugify$0.005 Base501 ms–100% up
  92. 89api.mdataaccess.com/readRead web content$0.002 Base728 ms–100% up
  93. 89twin.unykorn.org/rwa-screenRWA market readiness lookup$0.25 Base648 ms–100% up
  94. 89api.datanexusai.org/api/v1/energy/countriesCountries present in energy data$0.01 Base844 ms–100% up
  95. 89x402-agent.kariguetoazul.workers.dev/api/units/length/foot-to-nanometerConvert international feet to nanometres for length. SI/international definitions; IEEE-754 numeric precision. This is a specialised route of the length converter, not a separate data provider.$0.001 Base478 ms–100% up
  96. 89x402-agent.kariguetoazul.workers.dev/api/units/pressure/psi-to-kilopascalConvert pounds-force per square inch to kilopascals for pressure. SI/international definitions; IEEE-754 numeric precision. This is a specialised route of the pressure converter, not a separate data provider.$0.001 Base470 ms–100% up
  97. 89hubvibe-io.com/work/agent/task_proAgent Pro: a deeper task$9.00 Base978 ms–100% up
  98. 89verify.astranl.com/v1/agent-budget-auditAgent budget audit ABA-1 with signed receipt$0.05 Base563 ms–100% up
  99. 89china-trends-x402.onrender.com/v1/digestDigest$0.15 Base539 ms–100% up
  100. 89verify.astranl.com/v1/spend-fusePre-spend fuse for agents: GO, CAUTION or STOP with signed receipt$0.002 Base533 ms–100% up