x402watch

53,296 paid endpoints are listed. 24,164 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 2026-10-06 18:44 UTC · 53,296 probed

24,164 answering 40223,338 down4,952 rejecting842 no paywall1,722 price drift
  1. 91api.vextorium.com/v1/species-infoSpecies information by scientific or common name (GBIF): accepted name, full taxonomy (kingdom to species), rank, status, common names, number of occurrence records and countries with most records.$0.002 Base179 ms1 payers86% up
  2. 91api.vextorium.com/v1/eth-burnETH burned vs issuance$0.003 Base208 ms1 payers86% up
  3. 91api.vextorium.com/v1/morpho-vaultsMorpho lending vaults$0.003 Base189 ms1 payers86% up
  4. 91api.vextorium.com/v1/pendle-marketsPendle fixed-yield markets$0.003 Base204 ms1 payers86% up
  5. 91api.vextorium.com/v1/tropical-cyclonesActive tropical cyclones (NOAA NHC)$0.002 solana191 ms1 payers86% up
  6. 91api.vextorium.com/v1/scholarly-searchScholarly works search (OpenAlex)$0.003 solana186 ms1 payers86% up
  7. 91api.vextorium.com/v1/rich-listRichest addresses on an EVM chain$0.002 Base153 ms1 payers86% up
  8. 91api.vextorium.com/v1/chain-statsStatistics of an EVM chain: total and today's transactions, addresses, blocks, average block time, gas prices (slow, average, fast), network utilization, native token price and market cap.$0.002 Base210 ms1 payers86% up
  9. 91api.vextorium.com/v1/tx-decodeAn EVM transaction explained: method called and its decoded parameters with names (when the contract is verified), token transfers it triggered, value, fee, status, revert reason and names of the addresses involved.$0.004 Base192 ms1 payers86% up
  10. 91api.vextorium.com/v1/evm-internal-txsInternal transactions of an address$0.004 Base265 ms1 payers86% up
  11. 91api.vextorium.com/v1/wallet-token-transfersToken transfers of a wallet$0.004 solana177 ms1 payers86% up
  12. 91api.vextorium.com/v1/evm-tx-historyTransaction history of an EVM address (Ethereum, Base, Arbitrum, Optimism, Polygon, zkSync): date, method called, from, to (named when known), value, fee, status and revert reason, plus total fees paid.$0.004 Base180 ms1 payers86% up
  13. 91api.vextorium.com/v1/tezos-accountTezos account$0.003 Base182 ms1 payers86% up
  14. 91api.vextorium.com/v1/starknet-walletStarknet wallet balances$0.003 Base175 ms1 payers86% up
  15. 91api.vextorium.com/v1/kaspa-addressKaspa: balance of an address (kaspa:...) with transaction count and USD value; without an address, network status (blocks, difficulty, hashrate, circulating and max supply).$0.003 Base196 ms1 payers86% up
  16. 91api.vextorium.com/v1/near-accountNEAR account (name.near or 64-hex implicit): available and staked NEAR, storage used, whether it has a contract deployed and USD value.$0.003 Base172 ms1 payers86% up
  17. 91api.vextorium.com/v1/hedera-networkHedera network exchange rate and supply$0.002 Base185 ms1 payers86% up
  18. 91api.vextorium.com/v1/hedera-accountHedera account (0.0.x or EVM address): HBAR balance, associated HTS tokens with balances, staking node, pending reward, creation date and USD value.$0.003 Base170 ms1 payers86% up
  19. 91api.vextorium.com/v1/ethereum-blobsEthereum blob usage (EIP-4844, the data rollups post): current blob base fee in gwei and USD cost of one blob, blobs per block over the last N blocks and how often blocks were full.$0.002 Base194 ms1 payers86% up
  20. 91api.vextorium.com/v1/utxo-balanceLitecoin, Dogecoin and Dash balance$0.003 Base177 ms1 payers86% up
  21. 91api.vextorium.com/v1/stellar-accountStellar account: XLM and every asset balance (USDC, EURC...) with issuer, signers and thresholds, subentries and USD value.$0.003 Base177 ms1 payers86% up
  22. 91api.vextorium.com/v1/xrp-accountXRP Ledger account$0.003 Base203 ms1 payers86% up
  23. 91api.vextorium.com/v1/sui-walletSui wallet balances$0.003 Base173 ms1 payers86% up
  24. 91api.vextorium.com/v1/cosmos-walletCosmos, Osmosis and Celestia wallet$0.003 solana176 ms1 payers86% up
  25. 91api.vextorium.com/v1/huggingface-trendingTrending Hugging Face models$0.002 Base176 ms1 payers86% up
  26. 91api.vextorium.com/v1/llm-pricesLLM API prices compared$0.002 solana175 ms1 payers86% up
  27. 91api.vextorium.com/v1/x402-facilitatorsStatus of x402 facilitators (who verify and settle payments): live check of each one's /supported endpoint with latency, x402 versions, schemes and networks, plus on-chain settled volume over 24h, 7d and 30d (x402-list data). Choose a facilitator or debug failing payments.$0.003 Base179 ms1 payers86% up
  28. 91api.vextorium.com/v1/eu-fuel-pricesEU fuel prices by country$0.002 Base174 ms1 payers86% up
  29. 91api.vextorium.com/v1/exploited-vulnerabilitiesActively exploited vulnerabilities (CISA KEV)$0.003 solana179 ms1 payers86% up
  30. 91api.vextorium.com/v1/malicious-ipCheck an IP against public threat lists: botnet command-and-control servers (abuse.ch Feodo Tracker), Tor exit nodes and hijacked or spam networks (Spamhaus DROP). For filtering traffic, sign-ups and payments.$0.002 Base170 ms1 payers86% up
  31. 91api.vextorium.com/v1/spain-traffic-incidentsSpain road traffic incidents (DGT)$0.003 Base157 ms1 payers86% up
  32. 91api.vextorium.com/v1/food-productFood product by barcode (Open Food Facts)$0.002 solana175 ms1 payers86% up
  33. 91api.vextorium.com/v1/spain-ine-indicatorsSpain official indicators (INE)$0.002 Base205 ms1 payers86% up
  34. 91api.vextorium.com/v1/ics-to-jsonCalendar (iCal/ICS) to JSON$0.002 Base178 ms1 payers86% up
  35. 91api.vextorium.com/v1/qr-barcode-readRead QR codes and barcodes from an image$0.003 Base171 ms1 payers86% up
  36. 91api.vextorium.com/v1/us-mortgage-ratesUS mortgage rates (Freddie Mac)$0.002 Base181 ms1 payers86% up
  37. 91api.vextorium.com/v1/drug-infoUS drug facts from the official label (openFDA): brands, active ingredient, uses, dosage, warnings, contraindications, interactions, pregnancy and manufacturer. Information, not medical advice.$0.003 Base174 ms1 payers86% up
  38. 91api.vextorium.com/v1/hackernews-topHacker News front page$0.002 solana159 ms1 payers86% up
  39. 91api.vextorium.com/v1/doi-infoMetadata of a publication by DOI (Crossref): title, authors, journal or publisher, year, type, citation count, references, license, link and an APA-formatted citation.$0.002 Base171 ms1 payers86% up
  40. 91api.vextorium.com/v1/pubmed-searchSearch PubMed biomedical literature$0.003 Base159 ms1 payers86% up
  41. 91api.vextorium.com/v1/book-infoBook data by ISBN (10 or 13) or search by title and author on Open Library: title, authors, publisher, year, pages, languages, subjects, cover and links.$0.002 Base177 ms1 payers86% up
  42. 91api.vextorium.com/v1/wikipedia-trendingMost read Wikipedia articles in a language on a given day (yesterday by default): what people are looking up, with views and rank, technical pages removed. A signal of current events and trends.$0.002 Base166 ms1 payers86% up
  43. 91api.vextorium.com/v1/wikidata-entityStructured facts from Wikidata about a person, company, place or work by name or Q-id: type, country, population, dates, founders, headquarters, website, ticker, currency, version... labelled in your language. Grounded answers without free text.$0.003 Base175 ms1 payers86% up
  44. 91api.vextorium.com/v1/wikipedia-summarySummary of a Wikipedia article in any language: title, short description, lead paragraph, image, coordinates, link and Wikidata id. If the title is not exact it returns the closest article, flagged as approximate, with alternatives.$0.002 Base201 ms1 payers86% up
  45. 91api.vextorium.com/v1/postal-codePostal code lookup in more than 60 countries (ES, US, DE, FR, GB, IT, MX, BR...): places, province or state and coordinates.$0.002 Base167 ms1 payers86% up
  46. 91api.vextorium.com/v1/nostr-profileNostr profile by npub, hex key or NIP-05 identifier (name@domain): name, bio, picture, website, NIP-05, Lightning address and latest public notes, queried from several public relays.$0.003 Base199 ms1 payers86% up
  47. 91api.vextorium.com/v1/subdomainsSubdomains of a domain found in public Certificate Transparency logs (every TLS certificate issued): names, wildcard count and certificate dates. For asset inventory, audits and OSINT.$0.003 Base155 ms1 payers86% up
  48. 91api.vextorium.com/v1/europe-power-pricesWholesale day-ahead electricity price in a European country or zone (DE, FR, ES, PT, IT, NL, BE, AT, PL, CH, Nordics...) for today or a given day: hourly EUR/MWh, average, max, min and cheapest and most expensive hours. Use «todos» to compare the daily average across countries.$0.003 Base155 ms1 payers86% up
  49. 91api.vextorium.com/v1/jsonpathQuery JSON with JSONPath$0.002 solana143 ms1 payers86% up
  50. 91api.vextorium.com/v1/regex-testTest a regular expression against a text: every match with position, groups and named groups, plus the result of a substitution if you pass a replacement. Flags i, m, s, x. Time-limited, safe against catastrophic backtracking.$0.002 Base155 ms1 payers86% up
  51. 91api.vextorium.com/v1/tx-costWhat a typical operation costs right now in USD on 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): native transfer, ERC-20 transfer, DEX swap or NFT mint, sorted cheapest first.$0.003 Base180 ms1 payers86% up
  52. 91api.vextorium.com/v1/us-grantsUS federal grant opportunities from Grants.gov: title, number, agency, open and close dates, status and link; search by keyword (AI, energy, health...) and agency (NSF, NIH, DOE...), open or forecasted.$0.003 Base154 ms1 payers86% up
  53. 91api.vextorium.com/v1/provider-statusLive status of widely used cloud services and APIs (GitHub, Cloudflare, OpenAI, Anthropic, Discord, Vercel, npm, Twilio, DigitalOcean, Coinbase, Atlassian, Netlify, Supabase) from their status pages: overall state, affected components, open incidents and ongoing maintenance.$0.003 Base157 ms1 payers86% up
  54. 91api.vextorium.com/v1/us-airport-delaysUS airport delays (FAA)$0.003 Base152 ms1 payers86% up
  55. 91api.vextorium.com/v1/economic-calendarEconomic calendar (BLS, FOMC, ECB)$0.003 Base165 ms1 payers86% up
  56. 91api.vextorium.com/v1/revoke-approvalBuild a revoke-approval transaction$0.003 Base164 ms1 payers86% up
  57. 91api.vextorium.com/v1/evm-token-balanceBalance of one ERC-20 token in a wallet with symbol and decimals. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.$0.003 Base149 ms1 payers86% up
  58. 91api.vextorium.com/v1/us-debt-avg-interestAverage interest rate the US Treasury pays on its debt by instrument (bills, notes, bonds, TIPS, FRNs...) and total, with the rate one year earlier. US Treasury, public domain.$0.003 Base142 ms1 payers86% up
  59. 91api.vextorium.com/v1/us-budget-deficitMonthly US federal receipts, outlays and deficit (or surplus), plus the trailing 12-month deficit, from the Monthly Treasury Statement. US Treasury, public domain.$0.003 Base159 ms1 payers86% up
  60. 91api.vextorium.com/v1/us-jobs-reportUS jobs report (unemployment, payrolls, wages)$0.003 Base173 ms1 payers86% up
  61. 91api.vextorium.com/v1/us-cpiUS inflation (CPI)$0.003 Base154 ms1 payers86% up
  62. 91api.vextorium.com/v1/country-infoCountry profile$0.003 Base157 ms1 payers86% up
  63. 91api.vextorium.com/v1/moon-phaseMoon phase on a date: name, illuminated percentage, lunar age and the next new and full moon dates. Local astronomical calculation.$0.003 Base145 ms1 payers86% up
  64. 91api.vextorium.com/v1/sunrise-sunsetSunrise, sunset, solar noon, day length and civil, nautical and astronomical twilight for coordinates and a date, in local time (zone detected from coordinates). Local astronomical calculation; handles polar night and midnight sun.$0.003 Base163 ms1 payers86% up
  65. 91api.vextorium.com/v1/satellite-passesSatellite passes over a location$0.003 Base183 ms1 payers86% up
  66. 91api.vextorium.com/v1/wash-trendIs a token's volume authenticity getting worse or better? Compares the current organic score, volume, trades and liquidity with snapshots taken ~1h, ~6h and ~24h ago: STABLE (ESTABLE), DEGRADING (EMPEORANDO) or IMPROVING (MEJORANDO). The first query starts tracking the token with hourly snapshots for 7 days.$0.003 Base198 ms1 payers86% up
  67. 91api.aestheticdata.io/x402/regulatory/eu/devicesAesthetic-medicine subset of the public EUDAMED UDI-DI list, synced 29 Sep 2026: 14,266 entries from 13 EMDN codes (dermal fillers and filling kits, breast and facial implants, barbed threads, liposuction, and Annex XVI aesthetic equipment), selected by scope rule 3.1 with manufacturer whitelists. Not filtered by risk class or country. total 14266, page_size 100, 143 pages.$0.002 Base772 ms1 payers93% up
  68. 91m0.aiverall.com/v1/verify-emailValidate an email address before your agent spends money enriching, contacting, or storing the lead. RFC-shaped syntax check plus live domain DNS resolution in under 2 seconds. Does not confirm mailbox existence -- honest about what a sub-second, zero-dependency check can prove.$0.005 Base613 ms1 payers93% up
  69. 91x402-api-24223879872.us-east1.run.app/v1/package-trustInstall-safety signals for an npm or PyPI package: registry metadata, install-script usage, OSV advisories, typosquat risk, and a 0-100 trust score.$0.05 Base400 ms1 payers93% up
  70. 91sandbox.node4all.com/v1/md2pdfNode4All md2pdf — Markdown → PDF (md2pdf) conversion for AI agents and document automation workflows. Accepts UTF-8 markdown either as a multipart "file" upload (.md, ≤10MB) or as a JSON body { "markdown": "..." }, and returns application/pdf. Operator: Node4All (https://node4all.com). Currency: USDC on Base.$0.02 Base Sepolia689 ms1 payers93% up
  71. 91api.socialfetch.dev/v1/google/ad-library/advertisers/searchSearch Google Ad Transparency advertisers by name.$0.014 Base413 ms1 payers93% up
  72. 91api.socialfetch.dev/v1/tiktok/videos/commentsList comments on a TikTok video by URL.$0.014 Base351 ms1 payers93% up
  73. 91api.socialfetch.dev/v1/threads/users/searchSearch Threads users by keyword.$0.014 Base333 ms1 payers93% up
  74. 91api.socialfetch.dev/v1/facebook/postsGet a Facebook post or Reel by URL.$0.014 Base323 ms1 payers93% up
  75. 91similarity.openverbs.com/v1/jaccardJaccard similarity index in [0,1] — the size of the intersection over the union of the two strings' character-bigram sets.$0.004 Base205 ms1 payers90% up
  76. 91similarity.openverbs.com/v1/hammingHamming distance — the number of positions at which two EQUAL-LENGTH strings differ — plus a normalized similarity. Strings of unequal length are a clean 400.$0.004 Base242 ms1 payers90% up
  77. 91similarity.openverbs.com/v1/damerauDamerau-Levenshtein distance — like Levenshtein but also counts adjacent transpositions as a single edit — plus a normalized similarity in [0,1].$0.004 Base244 ms1 payers90% up
  78. 91scry.solanahub.de/x402/wallet/:address/forensics$0.05 Solana609 ms1 payers100% up
  79. 91x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-bitcoinHighest-demand x402 services tagged 'bitcoin': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 86 providers and 249 paying wallets measured in this tag.$0.008 Base396 ms1 payers93% up
  80. 91api.vextorium.com/extraer-pdf-pagoExtract the text of a PDF from its URL.$0.012 Base688 ms1 payers93% up
  81. 91api.vextorium.com/v1/pdf-extract-textPDF text extraction$0.012 Base158 ms1 payers86% up
  82. 91api.locus.report/api/locus-representativesElected districts and representatives for an address. Returns US congressional + state upper/lower districts (always, Census TIGERweb) plus current legislators where Open States is available. The representatives lane degrades cleanly when unkeyed. Charge-free when the address fails to resolve.$0.05 Base657 ms1 payers93% up
  83. 91api.strale.io/x402/robots-txt-parseFetch and parse a website's robots.txt. Returns rules per user-agent, sitemaps, crawl delays, and whether all crawlers are blocked.$0.0216 Base84 ms1 payers90% up
  84. 91api.strale.io/x402/backlink-checkCheck backlinks for a domain via CommonCrawl and Google search. Returns linking domains, anchor text, dofollow/nofollow counts.$0.162 Base86 ms1 payers90% up
  85. 91api.vextorium.com/analizar-wallet-pagoAnaliza una wallet: saldo, transacciones recientes, tokens con movimiento y puntuacion de riesgo (basada en marcas de scam de contrapartes y tokens). Soporta Ethereum, Base, Arbitrum, Optimism, Polygon, Bitcoin y Solana.$0.02 Base689 ms1 payers93% up
  86. 91dispatch-x402.fly.dev/dispatchRoute a natural-language agent intent to the correct paid fleet service. Returns the chosen service, a calibrated confidence score, params extracted from the intent, and ready-to-use call instructions (URL, method, price, x402 terms). Use the free /classify first to preview confidence.$0.50 Base395 ms1 payers93% up
  87. 91livecheck.fly.dev/v1/checkLivecheck Sentinel check - one-shot URL condition check. POST /v1/check with {target, condition, baseline_hash?}. Detectors: status_change, keyword, text_diff, numeric_threshold. Returns current observation + fired when comparable. Fixed $0.02 USDC. No watcher created. Not /v1/verify ($0.01) and not Confirm.$0.02 Base436 ms1 payers93% up
  88. 91gpt.558686.xyz/v1/data/insights$1.00 Base800 ms1 payers100% up
  89. 91gpt.558686.xyz/v1/research$2.00 Base663 ms1 payers100% up
  90. 91gpt.558686.xyz/v1/extract/schema$0.50 Base995 ms1 payers100% up
  91. 91gpt.558686.xyz/v1/translate/pro$0.30 Base937 ms1 payers100% up
  92. 91gpt.558686.xyz/v1/guard/tx$0.15 Base823 ms1 payers100% up
  93. 91gpt.558686.xyz/v1/doc/summary$0.50 Base923 ms1 payers100% up
  94. 91gpt.558686.xyz/v1/chat/completions$0.05 Base859 ms1 payers100% up
  95. 91scry.solanahub.de/x402/mint-risk$0.03 Solana839 ms1 payers100% up
  96. 91anansidata.xyz/paid/intel/model-advisorCheapest LLM meeting your constraints (price/context/modality) PLUS every price change and deprecation in the window. Providers publish only today's catalog and overwrite it — the change history exists nowhere else$0.05 Base522 ms1 payers93% up
  97. 91api.govparse.io/v1/pecos/enrollments/searchWho is enrolled in Medicare (PECOS)? Search the CMS 'Medicare Fee-For-Service Public Provider Enrollment' (PPEF) roster by state, specialty (provider type), org name, NPI, enrollment id, is_org, or snapshot. Returns NPI, enrollment id, provider type, state and org — the Medicare enrollment roster. CMS public-domain records.$1.25 Base664 ms1 payers93% up
  98. 91api.govparse.io/v1/feeds/pharma-prescribingWhich prescribers just entered a drug class this Medicare Part D year — e.g. new GLP-1 prescribers in PY2024? Bulk feed over CMS Part D Prescribers by Provider and Drug, aggregated per NPI to a drug class and differenced PY2023 → PY2024: direction=new_entrant returns new-to-class prescribers, de_adopter those whose class volume fell. Flat rows, cursor-paginated up to 1000/page, by drug_class, specialty, and state. Observational public Part D records — never a clinical recommendation.$25.00 Base700 ms1 payers93% up
  99. 91api.govparse.io/v1/cms/timely-care/deltaWhich hospitals' emergency-department throughput is degrading period-over-period? Windows the CMS Timely & Effective Care snapshots to compute each hospital's latest-vs-prior change on a measure (default OP_18b median ED time; higher = worse). Filter by measure, state, facility_id, direction (worse | better | any), min_pct_change, min_delta, and min_sample. Returns latest_score, prior_score, delta, and pct_change — the founder's ED-staffing-pressure tell. CMS Care Compare public-domain records.$1.25 Base637 ms1 payers93% up
  100. 91api.govparse.io/v1/feeds/labor-petitionsWhich employers just drew a union representation petition? Bulk feed over NLRB cases, newest-first by filing date, defaulting to representation petitions (R cases): employer, case type, region, filing date, and unit size — a labor-relations moment for PEOs, staffing, and labor counsel. category widens to ULP charges or all cases. Flat rows, cursor-paginated up to 1000/page, filterable by state, region, or union. Observational records AS FILED — a petition is a filing, never an adjudication.$25.00 Base682 ms1 payers93% up