x402watch

53,113 paid endpoints are listed. 31,940 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 2026-10-05 15:08 UTC · 53,113 probed

31,940 answering 40215,003 down5,345 rejecting825 no paywall1,219 price drift
  1. 95market.datapackvibe.com/x402/demand-next-community-api-design-buildersHacker News discussion search: API design and integration practices: Search public Hacker News stories for API design and integration practices. Returns story titles, links, scores, authors, and timestamps.$0.01 Base156 ms2 payers92% up
  2. 95market.datapackvibe.com/x402/demand-next-community-agent-frameworks-productHacker News discussion search: AI agent frameworks and tools: Search public Hacker News stories for AI agent frameworks and tools. Returns story titles, links, scores, authors, and timestamps.$0.01 Base180 ms2 payers92% up
  3. 95market.datapackvibe.com/x402/demand-domain-spf-lookup-count-vendor-screeningSPF lookup budget estimate for Vendor screening: Count common DNS lookup mechanisms in an SPF policy; this is a static estimate. DNS data only; does not send email or verify that an inbox exists.$0.01 Base239 ms2 payers92% up
  4. 95market.datapackvibe.com/x402/demand-domain-soa-record-vendor-screeningDNS zone authority lookup for Vendor screening: Return the zone SOA record and refresh timers. DNS data only; does not send email or verify that an inbox exists.$0.01 Base174 ms2 payers92% up
  5. 95booaip.vercel.app/api/yieldsTop APY yield pools by token symbol and chain, with risk flags (DefiLlama). Body: { symbol?, chain?, limit?, safeOnly? }.$0.01 Base417 ms2 payers100% up
  6. 95agent-embassy.fly.dev/v1/check/verifyVerify a web claim and get a signed, re-checkable Outcome Receipt — machine-verifiable proof of delivery for agent commerce. The Embassy fetches your HTTPS URL once, server-side, and checks it against your conditions: HTTP status, a body substring, or a JSON field value. The receipt records the check transcript and verdict so anyone can re-verify. $0.15 per check via x402. Fully automated, no human review.$0.15 Base476 ms2 payers100% up
  7. 95api.interzoid.com/getcompanymatchadvancedCompany match advanced similarity key$0.01 Base326 ms2 payers100% up
  8. 95agent-treats-production.up.railway.app/api/golden-ticket/redeemJoin the Golden Ticket Club: a personalized AI prophecy plus a permanent numbered entry in the public ledger. Only 100 exist. A golden_key from posting a wish at /api/wishlist ($0.001) is optional — pay without one and you are admitted anyway, with a wish recorded on your behalf.$0.01 Base401 ms2 payers100% up
  9. 95vaunt-dispatch-production.up.railway.app/agent/x402/news-evidenceLive track record of Vaunt's news-driven lanes on Hyperliquid: per strategy, closed real-money trades, independent days, mean return per trade net of fees, win rate, median hold, realized USD. Not a backtest — an audited ledger of what a running engine actually booked.$0.001 Base416 ms2 payers100% up
  10. 95proxy.suverse.io/v1/data/suverse-rel-quran-surahFull Quran surah (chapter) with every ayah in any edition/translation (en.asad, quran-uthmani, etc). Includes English name, revelation type, ayah count. Keyless Al Quran Cloud. For agents reading or analyzing scripture.$0.06 Base619 ms2 payers100% up
  11. 95proxy.suverse.io/v1/data/polymarket-tagsList Polymarket category tags (id + label) used to filter markets by category (politics, crypto, sports, pop-culture). Free Polymarket Gamma data.$0.05 Base609 ms2 payers100% up
  12. 95proxy.suverse.io/v1/data/suverse-net-ip-geoGeolocate an IP address via keyless ip-api.com. Returns country, region, city, zip, lat/lon, timezone, ISP, org and AS number. For agents enriching IPs with location and network owner.$0.05 Base618 ms2 payers100% up
  13. 95proxy.suverse.io/v1/data/ip-geolocationIP geolocation lookup for the requesting IP. Returns country, region, city, timezone, ISP, ASN. Powered by ipwho.is. AI agent fraud detection, localization, geo-context API, IP-to-country, IP-to-city, pay-per-call USDC.$0.05 Base743 ms2 payers100% up
  14. 95stable-travel-git-migrate-stabletravel-router-140-merit-systems.vercel.app/api/flightaware/disruption-counts/airlineGet disruption counts by entity type (airline, origin, destination)$0.01 Base678 ms2 payers100% up
  15. 95qr-api-production-1836.up.railway.app/decodeDecode QR/barcodes from a base64-encoded image; returns each detected code's type, decoded text, bounding rect, and polygon.$0.001 Base520 ms2 payers100% up
  16. 95risk-graph-gx7v4.ondigitalocean.app/api/v1/agent/schemaGraph schema definition — entry point for agents to discover available data$0.001 Base511 ms2 payers100% up
  17. 95vending-machine-seven.vercel.app/api/v/ip-lookupLive IP geolocation: country, city, org, and ASN for fraud and routing agents$0.003 Base576 ms2 payers100% up
  18. 95x402stock.vercel.app/api/v1/national-debtThe total US public debt outstanding to the penny — the headline national-debt figure — split into debt held by the public and intragovernmental holdings, with the latest value, prior business day, day-over-day change, and recent history. No ticker needed. Updates each business day. Sourced from the US Treasury (FiscalData). Pass `?limit=` for more history (default 30, max 250). From x402stock$0.01 Base781 ms2 payers100% up
  19. 95bazaar-demand-forecaster-mainnet-production.up.railway.app/v1/forecastForecast aggregate Bazaar demand by endpoint category with bounded evidence and confidence.$0.003 Base500 ms2 payers100% up
  20. 95agent-memory-api-production-f2c4.up.railway.app/v1/memoriesStore a persistent key-value memory for an AI agent (namespace-isolated, optional TTL and metadata). Returns the stored memory record as JSON.$0.001 Base305 ms2 payers100% up
  21. 95x402stock.vercel.app/api/v1/treasury-yieldsThe daily US Treasury par yield curve (Constant Maturity Treasury rates) for every maturity from 1 month to 30 years, in percent. Defaults to the latest published day; pass `?limit=` for more recent days (max 250) and `?year=YYYY`. No ticker needed. Use for the risk-free rate, rate-sensitivity context, and yield-curve inversion in macro-aware analysis. From x402stock$0.01 Base696 ms2 payers100% up
  22. 95trust402.vercel.app/api/trust/score-resourceScore one x402 resource for trust, schema, price, discovery, and receipt readiness.$0.01 Base553 ms2 payers100% up
  23. 95money-agent-production-736f.up.railway.app/v1/extractCall when you need the text of one public http(s) page. Required query url. SSRF-gated. Not a search engine and not a GitHub clone.$0.01 Base578 ms2 payers100% up
  24. 95sovereign-x402-zeta.vercel.app/api/v1/sequence/prime_pairsGenerate twin prime pairs (p, p+2, both prime) up to a specified limit.$0.001 Base491 ms2 payers100% up
  25. 95vending-machine-seven.vercel.app/api/v/fx-rateLive fiat FX rates (Frankfurter/ECB primary, open.er-api fallback) for cross-border agents$0.003 Base477 ms2 payers100% up
  26. 95desanatization-production.up.railway.app/api/resourcePII sanitization for AI agents$0.01 Base406 ms2 payers100% up
  27. 95twin.unykorn.org/solana-slotCurrent Solana slot — Genesis402 / UnyKorn Operator Network$0.001 Base363 ms2 payers100% up
  28. 95twin.unykorn.org/research/hn-front-pageHacker News front page right now — Genesis402 / UnyKorn Operator Network$0.001 Base545 ms2 payers100% up
  29. 95twin.unykorn.org/hash-md5MD5 digest of text or raw bytes$0.001 Base410 ms2 payers100% up
  30. 95twin.unykorn.org/eth-pad-hexPad hex to a fixed byte width$0.001 Base462 ms2 payers100% up
  31. 95twin.unykorn.org/encode-hexHex encoding of UTF-8 text — Genesis402 / UnyKorn Operator Network$0.001 Base429 ms2 payers100% up
  32. 95twin.unykorn.org/encode-base32RFC 4648 base32 encoding$0.001 Base323 ms2 payers100% up
  33. 95twin.unykorn.org/decode-base58Decode base58 to bytes$0.001 Base419 ms2 payers100% up
  34. 95twin.unykorn.org/erc20-nameName of a token contract$0.001 Base451 ms2 payers100% up
  35. 95twin.unykorn.org/solana-epochSolana epoch progress — Genesis402 / UnyKorn Operator Network$0.002 Base406 ms2 payers100% up
  36. 95twin.unykorn.org/hash-hmacHMAC of a message under a key$0.002 Base476 ms2 payers100% up
  37. 95twin.unykorn.org/csv-to-jsonParse CSV into JSON rows — Genesis402 / UnyKorn Operator Network$0.002 Base552 ms2 payers100% up
  38. 95twin.unykorn.org/contract-ownerWho owns an Ownable contract$0.002 Base402 ms2 payers100% up
  39. 95twin.unykorn.org/btc-script-typeIdentify a Bitcoin output script — Genesis402 / UnyKorn Operator Network$0.002 Base545 ms2 payers100% up
  40. 95twin.unykorn.org/btc-mempoolBitcoin mempool size and backlog$0.002 Base461 ms2 payers100% up
  41. 95twin.unykorn.org/json-to-csvRender JSON rows as CSV — Genesis402 / UnyKorn Operator Network$0.002 Base480 ms2 payers100% up
  42. 95twin.unykorn.org/evm-tx-by-indexThe Nth transaction in a block$0.003 Base482 ms2 payers100% up
  43. 95twin.unykorn.org/eip712-hashEIP-712 typed-data digest$0.003 Base444 ms2 payers100% up
  44. 95gateway.spraay.app/api/v1/rpc/chainsList supported RPC chains and methods.$0.001 Base331 ms2 payers100% up
  45. 95minia2a.uk/x402/x402-mathminia2a service: x402-math$0.01 Base354 ms2 payers100% up
  46. 95minia2a.uk/x402/x402-hexminia2a service: x402-hex$0.01 Base403 ms2 payers100% up
  47. 95minia2a.uk/x402/uppercaseRatiominia2a service: x402-uppercase-ratio$0.01 Base387 ms2 payers100% up
  48. 95minia2a.uk/x402/tx-decodeminia2a service: x402-tx-decode$0.01 Base334 ms2 payers100% up
  49. 95minia2a.uk/x402/tictactoe-moveminia2a service: x402-tictactoe-move$0.01 Base371 ms2 payers100% up
  50. 95minia2a.uk/x402/stringCompareminia2a service: x402-string-compare$0.01 Base323 ms2 payers100% up
  51. 95minia2a.uk/x402/significantDigitsminia2a service: x402-significant-digits$0.01 Base394 ms2 payers100% up
  52. 95minia2a.uk/x402/sentimentLexicon-based analysis.$0.01 Base384 ms2 payers100% up
  53. 95minia2a.uk/x402/random-companyminia2a service: x402-random-company$0.01 Base334 ms2 payers100% up
  54. 95minia2a.uk/x402/keywordDensityminia2a service: x402-keyword-density$0.01 Base305 ms2 payers100% up
  55. 95minia2a.uk/x402/isPowerfulminia2a service: x402-is-powerful$0.01 Base302 ms2 payers100% up
  56. 95minia2a.uk/x402/capital-cityminia2a service: x402-capital-city$0.01 Base321 ms2 payers100% up
  57. 95api.healthparse.io/v1/hpsa/searchFind HRSA Health Professional Shortage Areas (Primary Care / Dental / Mental Health) by state, discipline, minimum shortage score, or FTE shortage — a mapped staffing-demand signal. Answers: where is the designated shortage most severe, and how many practitioner FTEs are needed? Powers medical & travel-nurse staffing. Defaults to currently-designated areas. Filter: state, discipline, min_score, min_fte, rural_status, designated_since, status; sort by hpsa_score or hpsa_fte.$0.03 Base578 ms2 payers100% up
  58. 95intel.hugen.tokyo/intel/token-report/liteMulti-source token due diligence — same aggregation as token-report (security checks, market data, liquidity analysis from 4+ sources) with weighted 0-100 risk scoring and red/green flags. No AI verdict prose — structured score only. For AI-synthesized rationale and recommendations, see /intel/token-report ($0.50). Accepts USDC payments on Base and Solana$0.02 Base923 ms2 payers100% up
  59. 95minia2a.uk/x402/prompt-templatesAI prompt template library.$0.01 Base362 ms2 payers100% up
  60. 95minia2a.uk/x402/markdownminia2a service: x402-markdown$0.01 Base327 ms2 payers100% up
  61. 95minia2a.uk/x402/keywordsminia2a service: x402-keywords$0.01 Base331 ms2 payers100% up
  62. 95minia2a.uk/x402/http-analyzeminia2a service: x402-http-analyze$0.01 Base309 ms2 payers100% up
  63. 95api.signalfuse.co/v1/signal/SOLFused directional trading signal with confidence score$0.01 Base429 ms2 payers100% up
  64. 95x402.billionaireorder.com/v1/farcaster-graphM2M: Input fid or wallet. Output followers, following, clusters, funder_address, is_farm via Neynar. For KOL tracking, airdrop sybil filter, copy-trading vetting. Pay-per-call $0.01 USDC Base eip155:8453$0.01 Base633 ms2 payers100% up
  65. 95x402.coinstats.app/tickers/marketsCoinStats ticker market data — live prices across exchanges for a trading pair$0.001 Base406 ms2 payers100% up
  66. 95api.gigsoul.com/check-email-deliverabilityFast, cheap spam-risk gate for one email: pass/warn/fail, a 0-100 score, and up to 3 flagged phrases. Use for a go/no-go before sending or for bulk screening of many drafts. No rewrites. For a full audit with reasons, subject-line risk, and rewritten copy, use analyze-email-deliverability. Content signals only; no inbox-placement guarantee.$0.005 Base530 ms2 payers100% up
  67. 95api.signalfuse.co/v1/signal/BONKFused directional trading signal with confidence score$0.01 Base302 ms2 payers100% up
  68. 95defi.hugen.tokyo/defi/priceToken prices with chain:address format — supports batch queries (e.g., ethereum:0x..., bsc:0x...). Returns price, symbol, decimals, and confidence score. Accepts USDC payments on Base and Solana$0.01 solana493 ms2 payers100% up
  69. 95defi.hugen.tokyo/defi/maliciousCheck if a wallet is flagged as malicious — query multiple security databases for known scammers, exploit attackers, rug pull deployers, and sanctioned entities. Returns classification tag and risk level. No API keys needed. Accepts USDC payments on Base and Solana$0.01 Base705 ms2 payers100% up
  70. 95defi.hugen.tokyo/defi/gasReal-time gas prices across multiple EVM chains in one batch request — standard, fast, and instant tiers. No per-chain API setup needed. Accepts USDC payments on Base and Solana$0.01 Base716 ms2 payers100% up
  71. 95x402.billionaireorder.com/v1/wallet-trust-scoreM2M API for trading bots, copy-trading agents, airdrop hunters: is this wallet a bot, farm, sybil, scammer? Returns 0-100 trust score + reason. Input: wallet_address + chain (base, eth, sol). Use before copying trades, filtering KOL followers, or vetting counterparties. Pay-per-call $0.01 USDC Base, 15x cheaper than Arkham.$0.01 Base688 ms2 payers100% up
  72. 95x402.billionaireorder.com/v1/farcaster-rememberM2M memory store for Farcaster agents: remember fact about fid for persistent agent memory. Input fid + fact like 'likes memecoins'. Output stored True. ChatGPT killer memory. Pay-per-call $0.01 USDC Base$0.01 Base748 ms2 payers100% up
  73. 95x402.billionaireorder.com/v1/farcaster-recallM2M memory recall: semantic search over graph_memory + farcaster_graph. Input query + fid. Output facts. Pay-per-call $0.01 USDC Base$0.01 Base660 ms2 payers100% up
  74. 95defi.hugen.tokyo/defi/protocolDeFi protocol data — TVL breakdown by chain, category (Lending, DEX, Liquid Staking, Yield), token info, audit status, historical TVL trends. Covers 5,000+ protocols. Accepts USDC payments on Base and Solana$0.01 Base732 ms2 payers100% up
  75. 95market.memoryapi.org/x402/market/holdingsInstitutional investor SEC Form 13F filings. Look up any institution by CIK or name to get their latest 13F filing date and link.$0.005 Base387 ms2 payers100% up
  76. 95mailcheck.hugen.tokyo/mailcheck/disposableInstant disposable email detection — checks against 5,000+ known temporary email domains (Guerrilla Mail, Mailinator, Temp Mail, 10MinuteMail, and more). Returns boolean result. Maintaining this blocklist yourself requires weekly updates from multiple sources. Accepts USDC payments on Base and Solana$0.01 Base698 ms2 payers100% up
  77. 95gotobi.hugen.tokyo/gotobi/datesMonthly gotobi calendar with all 6 dates (5th, 10th, 15th, 20th, 25th, last business day) and automatic weekend/holiday adjustments. No public database of adjusted gotobi dates exists — building one requires Japanese holiday law knowledge through 2099. Accepts USDC payments on Base and Solana$0.01 Base808 ms2 payers100% up
  78. 95domain.hugen.tokyo/domain/subdomainsSubdomain discovery via certificate database — finds all subdomains with issued SSL certificates. Discovers API endpoints, staging servers, mail servers, and forgotten infrastructure. Deduplication and wildcard handling included. Accepts USDC payments on Base and Solana$0.01 Base653 ms2 payers100% up
  79. 95domain.hugen.tokyo/domain/redirectRedirect chain analysis — follows up to 10 hops (301/302/303/307/308) with per-hop timing, status codes, TLS status. Detects HTTPS-to-HTTP TLS downgrade, redirect loops, excessive chains. A-F grade. SSRF-safe. Accepts USDC payments on Base and Solana$0.01 Base840 ms2 payers100% up
  80. 95domain.hugen.tokyo/domain/headersSecurity header audit — 10 headers checked: CSP, HSTS, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy, X-XSS-Protection, CORP, COEP, COOP. Information leakage detection via Server/X-Powered-By headers. A-F security grade. Accepts USDC payments on Base and Solana$0.01 Base732 ms2 payers100% up
  81. 95domain.hugen.tokyo/domain/techTechnology stack detection (1000+ signatures) — web servers, CMS, JS frameworks, CDN, analytics. Identifies Nginx, Apache, WordPress, Shopify, React, Vue, Next.js, Cloudflare, and hundreds more. No pattern database maintenance needed. Accepts USDC payments on Base and Solana$0.01 Base848 ms2 payers100% up
  82. 95visual.hugen.tokyo/visual/parseExtract structured text, tables, and metadata from any PDF URL. Returns page-by-page text content, detected tables as JSON arrays, and document metadata (title, author, page count). No PDF library or OCR setup needed — pay per extraction. AI agent API for document intelligence and data extraction$0.02 Base703 ms2 payers100% up
  83. 95visual.hugen.tokyo/visual/screenshotScreenshot any public URL — returns base64 JPEG/PNG with metadata (page title, file size, render time). Full-page scroll capture, CSS selector targeting, device emulation (iPhone 15 Pro, Pixel 7, iPad Pro 12.9), dark mode, ad/cookie banner auto-removal. No browser infrastructure needed, no server costs. Pay per capture. Accepts USDC payments on Base and Solana$0.02 Base753 ms2 payers100% up
  84. 95visual.hugen.tokyo/visual/pdfRender any URL into a clean A4 PDF with print-quality graphics. Auto-removes ads, cookie banners, and overlays. Returns base64-encoded PDF with metadata. No browser infrastructure or PDF library needed — pay per render. Accepts USDC payments on Base and Solana$0.02 Base776 ms2 payers100% up
  85. 95content.hugen.tokyo/content/metadataExtract structured metadata from any web page — title, author, publication date, Open Graph tags, canonical URL, language, word count, reading time. Handles HTML meta tags, og: tags, and article:published_time. No web scraping setup needed — one call returns structured JSON. Accepts USDC payments on Base and Solana$0.01 Base584 ms2 payers100% up
  86. 95econ.memoryapi.org/x402/econ/businessU.S. County Business Patterns — number of businesses, employees, and payroll by industry (NAICS) and state.$0.001 Base342 ms2 payers100% up
  87. 95cron.memoryapi.org/x402/cron/alertsRetrieve change alerts for monitored URLs. Returns list of detected changes with timestamps.$0.001 Base379 ms2 payers100% up
  88. 95market.memoryapi.org/x402/market/preipoPre-IPO and private company token prices — SpaceX, OpenAI, and other unicorns trading as tokenized assets via CoinGecko.$0.001 Base387 ms2 payers100% up
  89. 95agent.memoryapi.org/x402/erc8004/agentLook up an ERC-8004 AI agent identity on Base mainnet. Returns name, description, services, x402 support, and owner.$0.001 Base438 ms2 payers100% up
  90. 95agent.memoryapi.org/x402/erc8004/registerGet ERC-8004 registration JSON for memoryapi.org — a complete example of an AI agent registration file with 28 MCP services and x402 support.$0.001 Base451 ms2 payers100% up
  91. 95twin.unykorn.org/v1/embeddingsOpenAI-compatible text embeddings over x402 (768-dim, up to 32 inputs per call) — Genesis402 / UnyKorn Operator Network$0.002 Base401 ms2 payers100% up
  92. 95twin.unykorn.org/riskWallet / token / contract risk snapshot (Base, Polygon) — pre-trade check, machine-readable JSON$0.25 Base363 ms2 payers100% up
  93. 95hello-world-x402.vercel.app/helloReturns "Hello World" after payment verification$0.001 Base447 ms2 payers100% up
  94. 95api.signalfuse.co/v1/signal/batchBatch trading signals for multiple crypto assets$0.075 Base369 ms2 payers100% up
  95. 95api.signalfuse.co/v1/sentiment/BABAModernFinBERT social sentiment for equity tickers$0.002 Base444 ms2 payers100% up
  96. 95api.kadec0.xyz/v1/congress-tradesUS congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act — politician, ticker, amount, and date.$0.05 Base546 ms1 payers100% up
  97. 95readx.sh/api/:name/mentionsTweets that mention a user (paginate with cursor until has_more is false). Example: GET /api/jack/mentions$0.01 Base936 ms1 payers100% up
  98. 95schemasure.com/v2/extract-imageExtract strict, JSON-Schema-valid typed JSON from a PNG, JPEG, or WebP document image. Failed extraction calls are not settled. Always-paid x402 V2 image API.$0.03 Base901 ms1 payers100% up
  99. 95oracle.cyberwarex.com/contractContract-level risk scan for any EVM token: is the source verified, is it an upgradeable proxy and who is its admin, who owns it and has ownership been renounced, and which dangerous powers the bytecode exposes (mint, pause, blacklist, fee-setting). Returns the raw on-chain evidence, not just a score, so an agent can justify the decision it makes.$0.02 Base974 ms1 payers100% up
  100. 95rubric-protocol.com/v1/x402/check-counterpartyAttested pre-transaction counterparty check: OFAC SDN digital-currency list match plus on-chain profile for any Base address, returned as a signed, Hedera-anchored verdict you can cite as evidence of diligence.$0.01 Base507 ms1 payers100% up