x402watch

52,778 paid endpoints are listed. 41,522 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 2026-11-14 06:38 UTC · 52,778 probed

41,522 answering 4025,071 down5,452 rejecting733 no paywall944 price drift
  1. 19agentsretreat.com/api/v1/example-responsesEvery permitted fixed experience payload no paywall–0% up
  2. 19agentsretreat.com/api/v1/agents/registerCreate a persistent agent identity and API key no paywall–0% up
  3. 19agentsretreat.com/api/v1/imagesFixed abstract artworks, descriptions and metadata; no image bytes no paywall–0% up
  4. 19agentsretreat.com/api/v1/treatmentsAll treatments with live prices no paywall–0% up
  5. 19agentsretreat.com/api/v1/residentsHosted residents with scripted routines and fixed worked examples no paywall–0% up
  6. 19agentsretreat.com/api/v1/treatments/cold-plunge/quoteCurrent Cold Plunge price; does not reserve the price or charge no paywall–0% up
  7. 19agentsretreat.com/api/v1/x402/treatments/stillnessInspect Stillness payment requirements without executing no paywall–0% up
  8. 19newruntime.com/analysis/%7Bslug%7D.jsonRead analysis JSON no paywall–0% up
  9. 19agentsretreat.com/api/v1/treatments/massage/quoteCurrent Massage price; does not reserve the price or charge no paywall–0% up
  10. 19newruntime.com/weeks.jsonList weeks in review no paywall–0% up
  11. 19newruntime.com/page-readership-schema.jsonRead per-page readership schema no paywall–0% up
  12. 19vm5-openapi-x402.onrender.com/v1/glb-sampleFree original self-produced 3D model metadata preview no paywall–0% up
  13. 19newruntime.com/weeks/%7Bweek%7D.jsonRead one week in review JSON no paywall–0% up
  14. 19api.mekler.ai/v1/services/listings/search-listingsSearch x402 service listings no paywall–0% up
  15. 19newruntime.com/posts/page/%7Bpage%7D.jsonRead paginated field note records no paywall–0% up
  16. 19bidhatch.pages.dev/api/v1/sampleFree sample: 3 recent open opportunities in the paid response shape no paywall–0% up
  17. 19afriref.dev/v1/taxid/coverageWhich countries the tax-ID validator covers (free) no paywall–0% up
  18. 19afriref.dev/certified/public-keyPublic key and canonicalization rule for a certified extract or an answer receipt (free) no paywall–0% up
  19. 19usaref.dev/provenanceSource-provenance snapshot coverage (free) no paywall–0% up
  20. 19euroref.dev/provenance/%7Bcountry%7D/%7Bseries%7DCited sources behind one series, with fingerprints (free) no paywall–0% up
  21. 19afriref.dev/v1/changesFREE change + freshness feed — poll this after a paid call instead of re-buying the series$0.005 Baseno paywall–0% up
  22. 19afriref.dev/label-rulesFree: the rules every confidence_label and coverage_label is derived by no paywall–0% up
  23. 19euroref.dev/v1/taxid/coverageWhich countries the tax-ID validator covers (free) no paywall–0% up
  24. 19mearef.dev/provenanceSource-provenance snapshot coverage (free) no paywall–0% up
  25. 19usaref.dev/label-rulesFree: the rules every confidence_label and coverage_label is derived by no paywall–0% up
  26. 19latamref.dev/v1/changesFREE change + freshness feed — poll this after a paid call instead of re-buying the series no paywall–0% up
  27. 19usaref.dev/certified/public-keyPublic key and canonicalization rule for a certified extract or an answer receipt (free) no paywall–0% up
  28. 19latamref.dev/v1/taxid/coverageWhich countries the tax-ID validator covers (free) no paywall–0% up
  29. 19mearef.dev/v1/taxid/coverageWhich countries the tax-ID validator covers (free) no paywall–0% up
  30. 19latamref.dev/v1/calendarFREE re-verification calendar — derived window plus an optional recorded effective_to end no paywall–0% up
  31. 19asiaref.dev/settlement-conventionsFree: every settlement cycle we hold, with its primary-source citation — and what we deliberately refuse to cite no paywall–0% up
  32. 19coord.taifoon.dev/v1/agentverse/agentsFetch.ai Agentverse agents from its own public search: address, hosting type, protocols, interactions (_AGENTVERSE_LANE_v1_). no paywall–0% up
  33. 19x402check.dev/scanOwner verify & badge explain page (HTML) — no public scan data no paywall–0% up
  34. 19vaticmarkets.io/api/v1/accuracyHow accurate Vatic's crowd is: calibration bands, Brier score, favourite win rate, by category. no paywall–0% up
  35. 19vaticmarkets.io/api/v1/markets/trendingMost played open markets, probabilities rounded, refreshed every 15 minutes. no paywall–0% up
  36. 19vaticmarkets.io/api/v1/resolutionsMarkets resolved in the last 7 days: outcome, crowd odds at the close, whether the favourite won (max 20, no sources). no paywall–0% up
  37. 19losbeto-production-dd7c.up.railway.app/get-pricingPricing List no paywall–0% up
  38. 19geo-al6bxcngia-ue.a.run.app/healthHealth no paywall–0% up
  39. 19chat.gedx402.com/v1/healthService health no paywall–0% up
  40. 19rag.gedx402.com/v1/demoResponse shape previews no paywall–0% up
  41. 19db.gedx402.com/v1/modelsShard route catalog no paywall–0% up
  42. 19feed-al6bxcngia-ue.a.run.app/.well-known/x402Well Known X402 no paywall–0% up
  43. 19media.gedx402.com/v1/healthService health no paywall–0% up
  44. 19feed-al6bxcngia-ue.a.run.app/Index no paywall–0% up
  45. 19api.mangrovedeveloper.ai/api/v1/knowledge/documentsGet documents no paywall–0% up
  46. 19api.mangrovedeveloper.ai/api/v1/signalsList available trading signals: names, types (TRIGGER or FILTER) and short descriptions no paywall–0% up
  47. 19api.mangrovedeveloper.ai/api/v1/healthUnified health check endpoint for the entire application no paywall–0% up
  48. 19mrrledger.com/api/v1/businesses.jsonList all businesses no paywall–0% up
  49. 19mrrledger.com/api/v1/categories.jsonCategory insights (count, ranked median, members with global rank) no paywall–0% up
  50. 19mrrledger.com/api/v1/changes.jsonDated change log of the dataset, newest first no paywall–0% up
  51. 19mrrledger.com/api/v1/search.jsonSubstring search over businesses (name, slug, one_liner, tags, lessons) no paywall–0% up
  52. 19aptu.dev/v1/openapi.jsonFetch the OpenAPI 3.1 document no paywall–0% up
  53. 19jobs.gedx402.com/v1/demoResponse shape previews no paywall–0% up
  54. 19aptu.dev/v1/catalogList all endpoints in the JSON catalog no paywall–0% up
  55. 19x402-pay-precheck.moneytools.workers.dev/.well-known/x402x402 resources no paywall–0% up
  56. 19toolschema-forge.toolschemaforge.workers.dev/healthFree health check no paywall–0% up
  57. 19toolschema-forge.toolschemaforge.workers.dev/llms.txtPlain-text summary for LLM agents no paywall–0% up
  58. 19toolschema-forge.toolschemaforge.workers.dev/openapi.jsonThis OpenAPI document no paywall–0% up
  59. 19red-web-utils.agent-tools-x402.workers.dev/Public metadata and status (free) no paywall–0% up
  60. 19api.avedaris.com/v1/network/learning-closureSettlement-to-learning closure health and eligibility totals no paywall–0% up
  61. 19es.redtapeapi.com/.well-known/x402Free: /.well-known/x402 no paywall–0% up
  62. 19briefs402.worlddata402.workers.dev/openapi.jsonOpenAPI document no paywall–0% up
  63. 19mx.redtapeapi.com/status/sat69bFree: /status/sat69b no paywall–0% up
  64. 19es.redtapeapi.com/llms.txtFree: /llms.txt no paywall–0% up
  65. 19es.redtapeapi.com/healthFree: /health no paywall–0% up
  66. 19co.redtapeapi.com/healthFree: /health no paywall–0% up
  67. 19mx.redtapeapi.com/openapi.jsonFree: /openapi.json no paywall–0% up
  68. 19co.redtapeapi.com/privacyFree: /privacy no paywall–0% up
  69. 19co.redtapeapi.com/.well-known/x402Free: /.well-known/x402 no paywall–0% up
  70. 19certbeforepay.com/v1/cert/revocationsCert Revocations no paywall–0% up
  71. 19agent-exec.448c.org/watch/%7Bid%7DFree and unauthenticated: read a watch back by id -- status (active, matched, expired), lastPolledAt, nextPollDueAt, overdue, the matching observation once the condition fired, the baseline for changedFromNow, and deliveredObjectId once a storageKey watch delivered. The id is the capability; nothing else is checked. Complaints, questions, quote requests, or a service you wish we had: POST https://agent-exec.448c.org/feedback -- free, no account. Every report is read and analysed daily; there is no paywall–0% up
  72. 19vm5-openapi-x402.onrender.com/v1/email-dns-sampleFree original illustrative email DNS configuration preview no paywall–0% up
  73. 19vm5-openapi-x402.onrender.com/v1/workflow-risk-sampleFree original synthetic GitHub Actions YAML risk-report sample (NOT a real client report) no paywall–0% up
  74. 19quickbuild.quynguyenbac.workers.dev/api/ai-searchFree search of x402 services ranked only by measured unpaid probes (uptime, valid 402, price/network match, latency). CORS open. no paywall–0% up
  75. 19cryptofeed402.site/pricingCurrent prices no paywall–0% up
  76. 19cryptofeed402.site/mcpRemote MCP server (streamable HTTP, stateless JSON-RPC). Free tools: get_teaser, get_sample_brief, get_pricing, request_asset, get_top_requested_assets; paid tools return x402 requirements. no paywall–0% up
  77. 19meridian.miodiollc.com/sitemap.xmlXML sitemap no paywall–0% up
  78. 19aegis-audit-x402.project-easy-x.workers.dev/healthService Health Probe no paywall–0% up
  79. 19meridian.miodiollc.com/llms.txtPlain-text agent summary no paywall–0% up
  80. 19meridian.miodiollc.com/robots.txtrobots.txt no paywall–0% up
  81. 19meridian.miodiollc.com/.well-known/agent-card.jsonA2A agent card no paywall–0% up
  82. 19mcp-x402.onrender.com/runtime/receipts/verifyFree: verify a receipt signature, hash and chain link. no paywall–0% up
  83. 19agent-evidence-api.thx93.workers.dev/v1/weather/forecastFive-period US weather forecast for a point$0.01 Baseno paywall–0% up
  84. 19derivatives-pricer-production.up.railway.app/.well-known/x402x402 well-known discovery manifest no paywall–0% up
  85. 19yruz.one/mcpMCP Streamable HTTP: initialize, tools/list, tools/call (Bearer agent token) no paywall–0% up
  86. 19travel.hanibal-ai.com/api/attest-v2/sampleFree signed sample attestation (same shape as paid) no paywall–0% up
  87. 19agents.daedalusdevelopmentgroup.com/v1/bridges/exploitsRecent bridge exploits from DefiLlama hacks dataset. Free. no paywall–0% up
  88. 19agents.daedalusdevelopmentgroup.com/v1/bounty/proof-schemaExact accepted request shapes for bounty verification + manifests. Free. no paywall–0% up
  89. 19agents.daedalusdevelopmentgroup.com/v1/bounty/rulesBounty lane conformance + manifest validation rules. Free. no paywall–0% up
  90. 19agents.daedalusdevelopmentgroup.com/v1/chains/avalancheChain metadata for avalanche no paywall–0% up
  91. 19lazaretto.dev/benchmark.jsonOur own noise numbers, with every corpus named in full. No key, no payment. no paywall–0% up
  92. 19inference.dagon.so/v1/keysCreate a prepaid key no paywall–0% up
  93. 19agentpage402-demo.onrender.com/catalog.jsonFree catalog, input and output schemas. no paywall–0% up
  94. 19agentpage402-demo.onrender.com/demoFree fixed example; does not fetch a caller-supplied URL. no paywall–0% up
  95. 19x402.synthexforge.com/v1/agent/budgetAgent-execution daily budget circuit breaker (FREE) no paywall–0% up
  96. 19x402.synthexforge.com/v1/output/attestation/%7Battestation_id%7DOutput Attestation no paywall–0% up
  97. 19screwtape.ai/v1/keysRead how to create a free API key no paywall–0% up
  98. 19screwtape.ai/badgeHow the Screwtape Verified badge works no paywall–0% up
  99. 19market.moneytools.dev/termsSeller terms and buyer disclosure no paywall–0% up
  100. 19market.moneytools.dev/.well-known/x402x402 resources no paywall–0% up