x402watch

35,236 paid endpoints are listed. 21,651 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 2026-10-07 13:47 UTC · 35,236 probed

21,651 answering 40213,185 down283 rejecting117 no paywall1,322 price drift
  1. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1533 ms0 payers100% up
  2. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1445 ms0 payers100% up
  3. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1260 ms0 payers100% up
  4. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1614 ms0 payers100% up
  5. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1643 ms0 payers100% up
  6. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1268 ms0 payers100% up
  7. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1543 ms0 payers100% up
  8. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1417 ms0 payers100% up
  9. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1524 ms0 payers100% up
  10. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1430 ms0 payers100% up
  11. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1359 ms0 payers100% up
  12. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1256 ms0 payers100% up
  13. 87api.teardrop.dev/tools/mcpTeardrop MCP gateway: pay-per-call tools for AI agents covering token prices, DeFi yields and lending, wallet portfolios and approvals, onchain transactions, DEX quotes, and web search. Call via MCP tools/call over streamable HTTP; settle with x402 USDC on Base.$0.005 Base1081 ms0 payers100% up
  14. 86vibesprings.net/api/price/btc-usdReal-time BTC/USD price feed oracle. Retrieves live spot rate, 24h high/low, and volume directly from Coinbase Exchange.$0.002 Base1536 ms20 payers93% up
  15. 86vibesprings.net/api/price/base-gasBase network real-time gas price oracle. Returns block base fee, current gas price in GWEI, and network block details.$0.001 Base1386 ms19 payers93% up
  16. 86api.delx.ai/api/v1/x402/imageDelx Commerce cheap image generation API for agents at $0.01 USDC. Call when you need a product visual, ad creative, thumbnail, banner, logo concept, or social graphic with no API key or monthly plan. Commercial FLUX Schnell stills via x402 on Base or Solana—public WebP URL, SHA-256 receipt, and 11 aspect ratios. No subscription.$0.01 Base1476 ms11 payers93% up
  17. 86api.oblique.markets/api/v1/paid/bazaar-price-statsUse when an agent needs bazaar price stats. Returns x402 Bazaar price distribution across the latest daily full-catalogue snapshot: min/p25/p50/p75/p90/max in atomic units and USD, USD price bands with shares, and per-network listing counts with median price. Optional ?network= filter. $0.002.$0.002 Base1540 ms10 payers93% up
  18. 86win.oneshotagent.com/v1/tools/enrich/profileProfile enrichment from LinkedIn URL$0.005 Base1131 ms10 payers93% up
  19. 86x402-data-api.onrender.com/api/geoIP geolocation: country, region, city, coordinates, and timezone for any IPv4 or IPv6 address. Fast in-memory lookup for analytics, fraud, and personalization agents.$0.001 Base1302 ms8 payers93% up
  20. 86api.socialfetch.dev/v1/reddit/searchSearch Reddit posts site-wide by keyword (not scoped to one subreddit — use reddit.subreddit.search.list for that).$0.014 Base2036 ms8 payers93% up
  21. 86x402.payperbyte.io/feeds/earthquakesUSGS recent earthquakes worldwide (M2.5+)$0.003 Base1657 ms8 payers93% up
  22. 86x402.devvizion.com/v0/outlineResearch outline 0.01 USDC (first pay · Base). Ladder: free GET /v0/sample-outline.json → POST /v0/outline → brief 0.02. Machine settle: GET /first-buy.json · lander /start · /.well-known/x402.$0.01 Base1441 ms7 payers93% up
  23. 86mcp.yield.xyz/x402/yields_get_allDiscover DeFi yield opportunities across 80+ networks — 3,300+ staking, lending, vault, and RWA yields from Lido, Aave, Morpho, and more. Filter by token, network, yield type, or provider and sort by APY or TVL. Returns yield IDs (needed by every other tool) with APY, TVL, lock-up/cooldown periods, and KYC gating. Start here.$0.001 Base1399 ms7 payers93% up
  24. 86madoromi.fun/api/agent/interpret/fullJapanese dream-interpretation agent API. Returns a Gemini-generated full interpretation from madoromi's curated dream-motif knowledge base (result schema agent-dream-insight.full.v1). Japanese output only. Dream text is never stored or logged. Async by default: the paid POST returns a job id in seconds; fetch the result with a plain free HTTP GET (no x402 client) at /api/agent/interpret/result/{job_id} (ready in ~15s). options.sync=true for one sync response (10-20s; client timeout 60s+).$0.01 Base1542 ms7 payers93% up
  25. 86x402.tbs-digital.com/crypto/bundleComplete crypto and DeFi snapshot in ONE call for AI agents: spot prices for your tokens, full market data (market cap, 24h volume, supply, 24h change) for the lead token, top-10 chains by TVL, and the best yield pools by APY. Prices, market, TVL and yields together — the most complete crypto+DeFi call per request.$0.001 Base1675 ms7 payers93% up
  26. 86x402.ottoai.services/token-securityToken security scanner — is this token safe to buy? Honeypot, rug-pull, and scam detection for any token contract — flags can't-sell traps, hidden mints, malicious buy/sell taxes, and holder concentration. Powered by GoPlus across 8 chains.$0.001 Base1086 ms7 payers93% up
  27. 86human.twin3.ai/v1/humanHuman verification for AI agents — proof of humanity, sybil resistance, and 'is this wallet a real person' answers in one paid call. Returns two ZK-style outputs about any EVM wallet: (1) total humanity score 0-255 (15 = baseline reCAPTCHA, 45 = + Google OAuth, 70 = + Apple ID, 105 = + 2FA, 255 = full stack), with optional `min_score=N` for a yes/no `passes` verdict; (2) per-method verification check via `check=telegram,apple,g2fa,...` — buyer must NAME the methods to ask about, we never enumerate the full set. Backed by 141,871 Twin Matrix Soulbound Tokens on BNB Chain plus the canonical humanity registry off-chain. The underlying verification list never leaves Twin3 — only verdicts.$0.001 Base1322 ms7 payers93% up
  28. 86defillama.use.x402atlas.com/dexsDEX volumes by DefiLlama — all decentralized exchanges with trading-volume summaries and charts.$0.005 Base1253 ms6 payers93% up
  29. 86tiktok.palmyr.ai/v1/accountsList the TikTok accounts your wallet owns, with session health.$0.001 Solana2175 ms6 payers93% up
  30. 86api.geoprimitives.dev/v1/timezoneGive it a longitude and latitude and it answers with the IANA timezone identifier (America/New_York), the UTC offset in force there right now, whether daylight saving is currently in effect and by how much, the local wall-clock time, and the zone's standard offset. Pass an optional ISO 8601 `at` instant to ask about any moment between 1900 and 2100 instead of now, which is what you want when scheduling something months out across a DST boundary. Parameters go in the query string: this is a GET, there is no body. Two halves, with different vintages, and the difference matters. The offset and the DST rules come from the runtime's own timezone database and are current: a rule change reaches this endpoint when Cloudflare updates ICU, with no redeploy here. The *boundaries* come from tz_world (efele.net), CC0 1.0 and derived from VMAP0, a public-domain US government product. That map was frozen at tzdb 2016d in May 2016, and this catalog sells public-domain and permissively-licensed data only, which is why it is used rather than the current OpenStreetMap-derived alternative. What the vintage costs, measured against IANA's own coordinates for all 312 zones in zone1970.tab rather than estimated: 293 agree. Of the 19 that do not, 7 are Antarctic research stations, which this map does not cover at all and which fall back to the open-water rule; 7 more return a different identifier for the identical offset and DST all year (Australia/Brisbane for Australia/Lindeman, America/Regina for America/Swift_Current, and five like them), so the time is right and only the name is old. That leaves four regions where the answer is up to one hour wrong because the zone was split after 2016: Chilean Magallanes and Aysen (answered as America/Santiago rather than America/Punta_Arenas or America/Coyhaique), the Mexican border municipalities around Ciudad Juarez, Saratov Oblast in Russia, and the weeks each spring when Asia/Hebron and Asia/Jerusalem change on different dates. If you query inside one of those, do not trust this endpoint. Boundary precision is a separate question from vintage. The map is indexed as compacted H3 cells at resolution 6, whose half-width is about 1.6 km, chosen to match VMAP0's own stated positional accuracy of roughly 2 km rather than to flatter the index. So a point within a couple of kilometres of a zone border may be attributed to the neighbour, and no amount of the source's precision would fix that because the source does not have it. Away from a border the answer is exact. Every answer says where it came from under `source`. `boundary` means the point is inside a mapped timezone polygon and is the answer you are paying for. `coastal` means it is over water or on land this map does not cover, and the identifier is the nearest zone within about 60 km -- correct for a harbour or a coastal city whose coordinate falls just offshore, and not a boundary result. `nautical` means open water more than about 60 km from mapped land, answered with the tz database's own rule for international waters, meridians 15 degrees apart; it is not the time kept aboard any vessel and it ignores territorial waters. Longitude and latitude are checked against EPSG:4326 bounds before anything else touches them, because H3 silently normalises an out-of-range latitude into a real but wrong cell rather than refusing it. Reproject with POST /v1/transform first if you are not already in WGS 84. The DST flag is decided on offsets rather than on the tz database's own isdst bit, so Europe/Dublin reads as daylight saving in summer like everywhere else, and it is measured over a window either side of the instant so that a zone which changes its standard offset mid-year -- Asia/Almaty in 2024 -- is not mistaken for one on daylight saving.$0.005 Base1484 ms6 payers93% up
  31. 86proxy.aproxpay.com/v1/proxyResidential proxy fetch (up to 2MB). Returns HTTP 200 with the target body; read X-Target-Status for the origin status. Billed for the forwarded request, not for a 2xx origin response. For larger responses use /v1/proxy/large; at >17 requests a session pass is cheaper.$0.003 Base1792 ms6 payers93% up
  32. 86vedetta.dethboy.com/v1/feedRecent analyst desk posts as a stream (?since_id=&asset=&limit=): cached, instant, half a cent. Poll it cheaply; escalate to a live read when something moves. Descriptive research, not financial advice.$0.005 Base1801 ms6 payers93% up
  33. 86store.agentexchange.work/crypto/pricesLatest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, bitcoin, or base:0x…): current spot price, token symbol, decimals, and a confidence score, for up to 50 coins in one call. Pass ?at=<unix> for the historical price at a point in time. Sourced from DefiLlama across every major chain. Also accepts legacy ?ids=bitcoin,ethereum.$0.01 Base1700 ms6 payers93% up
  34. 86api.insumermodel.com/v1/attestSigned attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, and agent standing (ERC-8004 registration, ERC-7710 delegation validity with revocation proof). A verifiable boolean, never raw balances. Up to 10 conditions per pay-per-call request. Pay in USDC on Base, Polygon, Arbitrum, Arc, or Solana.$0.05 Base1506 ms5 payers93% up
  35. 86pro-api.coingecko.com/api/v3/x402/onchain/simple/networks/base/token_price/:addressQuery onchain DEX token price & market data based on the provided token contract addresses on a network.$0.01 Base1212 ms5 payers93% up
  36. 86squeezeos-api.onrender.com/api/web/creditsWeb scraping and extraction credit pack for AI agents: 10 accepted public-URL clean-text reads at a micro-price with no scraper subscription.$0.005 Base1057 ms5 payers93% up
  37. 86sat.ipintel.ai/address-to-coordinatesWorldwide forward geocoding for agents. Convert an address, landmark, city, postcode, or place name into latitude and longitude with normalized address components and confidence metadata.$0.002 Base2357 ms5 payers93% up
  38. 86x402endpoint-utiwoa54hq-uc.a.run.app/authGet a Firebase ID token for authenticating with the callable APIs$0.001 Base1627 ms5 payers93% up
  39. 86houjin.agentic-jp.com/statsDataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered.$0.001 Base1277 ms5 payers93% up
  40. 86crypto.apitoll.cloud/v1/crypto/chartHistorical token price time series by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, or base:0x…): a dated array of prices for up to 20 coins, with selectable span (number of points) and period (1d, 1h, 1w). For charting, backtesting, and trend analysis. Pairs with /v1/crypto/price for the live spot. Sourced from DefiLlama.$0.001 Base1759 ms4 payers93% up
  41. 86energy.lonestaroracle.xyz/energyUS energy inventory catalyst signal + EIA report calendar (optional ?report=)$0.05 Base1279 ms4 payers93% up
  42. 86hazard.lonestaroracle.xyz/hazardGlobal (or per-country) natural-hazard / disaster alert signal (optional ?country=)$0.05 Base1229 ms4 payers93% up
  43. 86api.m2msentinel.com/v1/dex/metricsHow deep is liquidity for tracked Base tokens and how much is actually trading, with the source named, for sizing an order or declining one.$0.01 Base1043 ms4 payers93% up
  44. 86giftpulse.theaslangroupllc.com/api/giftcard/catalogSearch Reloadly's gift card catalog (300+ brands, 14,000+ products/denominations across countries). Returns each product's id, brand, country, denomination range or fixed amounts, and sender fee/discount — everything needed to build a POST /api/giftcard/quote call.$0.01 Base1403 ms4 payers93% up
  45. 86asn-lookup.underscoredone.com/lookupGiven an internet address (IP) or a network identification number (ASN), this tool returns who operates that piece of the internet: the network number, the owner's name, the country it's registered in, the regional registry that manages it, and the exact address range it belongs to.$0.01 Base2139 ms4 payers93% up
  46. 86api.qonoro.ai/v1/email/validateValidates email deliverability: syntax check, MX record lookup, and SMTP server reachability. Returns risk score and quality rating. Deterministic, sub-second. x402-native.$0.005 Base2046 ms4 payers93% up
  47. 86marketdata.use.x402atlas.com/insider-tradesSEC Form 4 insider transactions for a US stock — director/officer buys and sells with shares, price and value, a smart-money signal.$0.015 Base2148 ms4 payers93% up
  48. 86laso.finance/order-intl-cardOrder an international non-reloadable prepaid card (USD). The order is queued and fulfilled by an admin, after which the card details are retrievable via GET /get-card-data with card_type="Non-Reloadable International". A 3.8% fee is added on top of the on-card amount, or less while a fee promotion is running; the 402 challenge carries the exact total. Submit a whole dollar on-card amount.$100.00 Base1878 ms4 payers93% up
  49. 86api.statemind.ai/v1/x402/staticCheck Python for syntax errors, lint and type mistakes, unsafe constructs and hardcoded credentials, and against the examples the caller supplies, without running it.$0.01 Base1931 ms4 payers93% up
  50. 86filedge.io/v1/parseParse SEC filings (10-Q, 10-K, 8-K, Form 4) and earnings transcripts into structured JSON. Supports EDGAR by ticker or direct URL.$0.05 Base2006 ms4 payers93% up
  51. 86lionx402.com/api/x402/enrichment-tx-bundle-jsonLION Research Bundle — one-call enrichment + tx context$0.005 Base1026 ms4 payers93% up
  52. 86lionx402.com/api/x402/cpg-product-intel-jsonCPG product data + shop prices by barcode or name. Open Food Facts + Open Prices. Ed25519 attested.$0.004 Base1132 ms4 payers93% up
  53. 86lion-x402-bible.lionmaster-operations.workers.dev/api/x402/cpg-product-intel-jsonCPG product data + shop prices by barcode or name. Open Food Facts + Open Prices. Ed25519 attested.$0.004 Base1770 ms4 payers93% up
  54. 86tenderdelta-preview.mooncakemonkey1.workers.dev/x402/v1/searchSearch explainably qualified EU solar and battery tenders from an explicitly dated TED snapshot$0.01 Base1218 ms4 payers93% up
  55. 86amoraw.xyz/caipCanonicalize a CAIP-2/CAIP-19 or legacy network string and return the recognized chain, native currency, reviewed USDC asset and decimals, supported x402 schemes, supported-versus-recognized status and registry version.$0.001 Base1481 ms4 payers93% up
  56. 86agent.atinamos.co.uk/agent/json-repairDeterministic JSON validation and conservative repair for AI-agent payloads. Repairs unquoted object keys, single-quoted strings, trailing commas, Markdown code fences, UTF-8 BOMs and JSON-compatible Python literals, including nested or repeated defects. No LLM or invented data; every applied transformation is reported.$0.005 Base1623 ms4 payers93% up
  57. 86api.getplexa.com/v1/quotePlexa /v1/quote — executable swap quote: the realizable fill price at your trade size, not a mid/spot price feed. Returns price impact (bps), worst-case slippage, depth and the per-leg route across Base/Polygon/Arbitrum liquidity, from canonical on-chain quoters. Call it before a swap to see what the fill actually costs. Informational data, not financial advice.$0.02 Base1063 ms4 payers93% up
  58. 86physics.openverbs.com/v1/listList every physical constant in the dataset, or only those in a given category (universal, adopted, electromagnetic, atomic, physico-chemical). Returns the constants, the total count and the set of available categories.$0.004 Base611 ms4 payers90% up
  59. 86api.geoprimitives.dev/v1/marine/depthGive it a latitude and longitude and it answers with what the nautical chart says about the water there: the depth range of the charted depth area containing the position, the nearest charted sounding and how far away it is, and the chart's own zone of confidence for that area. Parameters go in the query string: this is a GET, there is no body. NOT FOR NAVIGATION, stated first because it is a condition of using the source. This is derived from NOAA Electronic Navigational Charts and redistributed; it is not an official NOAA ENC and does not meet federal chart carriage regulations under 33 CFR 164 or SOLAS chapter V, which only charts from NOAA or a certified NOAA ENC distributor do. Every response repeats this under `disclaimer`. NOAA and NOAA ENC are registered trademarks of NOAA, which does not endorse this service. COVERAGE is 65 NOAA ENC cells of usage bands 3, 4 and 5 over five working areas of southeast and southcentral Alaska: Sitka Sound; Kasaan Bay and Clarence Strait; Metlakatla, Ketchikan and Revillagigedo Channel; Juneau, Gastineau Channel and Lynn Canal; and Cordova with eastern Prince William Sound. It is not statewide, it is not the whole coast, and the small-scale cells that would make it look wider were deliberately left out. The coverage check reads the coordinate, so it runs in the handler after payment rather than in front of the 402: a position off the charts is quoted like any other and then refused with outside_coverage. A refusal does not settle and nothing is charged, but it costs a signature and a round trip, so check the coverage first. Every response repeats it under `coverage`. NOTHING IS INTERPOLATED, and that is the difference between this and GET /v1/elevation. Terrain is a continuous surface and sampling it between pixels is legitimate; a chart is a set of assertions a hydrographer made, and averaging two of them invents a depth nobody surveyed. So `depthAreaMinimum` is DRVAL1 of the charted depth area the position falls inside, the shoalest depth that area is guaranteed to hold, and `nearestSounding` is a real charted sounding with the geodesic distance to it. The two routinely disagree and are meant to: a sounding is a measurement at a point and the area is a guarantee over a region. The guarantee is the number to navigate a plan by; the sounding tells you how the area was arrived at. WHICH CHART ANSWERS: ENC cells overlap on purpose, so a position in Sitka sits on a 1:12,000 harbour cell, a 1:45,000 approach cell and a 1:180,000 coastal cell at once, and they do not agree because the smaller scales generalise. The largest-scale cell covering the position wins outright, usage band first and then compilation scale, which is the rule an ECDIS follows. The response names the cell, its band, its scale, its edition and its NOAA issue date, and lists any cell it consulted first that charted no depth area there. SURVEY QUALITY is on every answer as the chart's CATZOC zone of confidence, with the position and depth accuracy that zone implies, and the survey start and end dates when the chart gives them. Read it before you trust a depth. NOAA's own warning applies to all of it: much of the depth information on NOAA charts is from surveys conducted before 1940 and the shoreline is more than 20 years old. Zone A1 is a modern full-coverage survey; zone D or U means the chart is telling you it does not know. DATUMS: depths are metres below Mean Lower Low Water, which is the US chart datum, so a real depth at a real moment is this number plus the tide. Heights on the same charts are above Mean High Water. Positions are WGS 84. Reproject with POST /v1/transform if you are in State Plane or NAD27; the datum shift matters here, since a NAD27 Alaskan position is over a hundred metres from its WGS 84 one. VINTAGE: the charts are a snapshot taken on 2026-05-02. NOAA reissues ENCs weekly for Notice to Mariners and this store does not follow them, so a cell here can be behind NOAA's current edition. The cell edition, update number and issue date that answered are in `source` for exactly that comparison. REFUSALS that cost nothing: a position with no charted depth area is `no_depth_area`, which means land, a drying area the chart gives no depth for, or a gap between cells, and it is refused rather than answered with null. A position off the charts is `outside_coverage`. A chart object that cannot be read is a 503, not a guess. For what is in the way rather than how deep it is, use GET /v1/marine/hazards, which returns charted rocks, obstructions and wrecks within a radius.$0.005 Base2386 ms3 payers93% up
  60. 86api.brazilayer.com/v1/fundos/fluxosWhere Brazilian institutional money moved today: daily net flows (subscriptions minus redemptions) by fund class (fixed income, equities, multi-strategy, FX) across the entire R$ 13.8 trillion Brazilian fund industry, from official CVM filings covering ~25,000 fund classes. The emerging-market equivalent of smart-money netflow, from the regulator itself. Free sample, no payment: https://api.brazilayer.com/v1/fundos/amostra$0.005 Base142 ms3 payers77% up
  61. 86hyperliquid-accounts.use.x402atlas.com/stakingA Hyperliquid account's HYPE staking summary (delegated/undelegated/pending), for any 0x address.$0.01 Base1196 ms3 payers93% up
  62. 86quartermaster.surewhynot.app/v1/extractExtract clean readable text and metadata from a public webpage and return structured JSON for AI agents.$0.005 Base1365 ms3 payers93% up
  63. 86racingpulse.theaslangroupllc.com/api/goingLive ground and going conditions for 35 global racecourses. For horse-racing betting agents.$0.02 Base1791 ms3 payers93% up
  64. 86space-weather.use.x402atlas.com/forecastSpace-weather forecast — normalized one-to-three-day NOAA SWPC geomagnetic Kp-index periods labeled observed, estimated, or predicted.$0.005 Base1429 ms3 payers93% up
  65. 86decision-solver.use.x402atlas.com/knapsack0/1 knapsack solver — exact work-bounded capacity planning and portfolio selection for maximum value, with deterministic ties and reproducible DP evidence.$0.005 Base1491 ms3 payers93% up
  66. 86artifact-inspector.use.x402atlas.com/jwtJSON Web Token (JWT) decoder — parse an unverified compact JWS header and claims and evaluate advisory NumericDate times without signature verification or URL fetching.$0.005 Base1592 ms3 payers93% up
  67. 86api.clawinabox.xyz/paid/v1/guard/checkSpend-policy verdict for AI agents: POST a proposed spend, get allow/review/deny with the exact rules that fired (per-tx caps, per-agent daily ledger, destination allowlists, time windows) - 'review' can page a human on Telegram for approval before the agent proceeds. Pay per call.$0.01 Base1325 ms3 payers93% up
  68. 86api.agentmercantile.com/v1/portfolio-preflightBounded Ethereum/Base wallet/portfolio holdings evidence: inventory, partial DEX pricing coverage, concentration, and evidence gaps. Pre-action evidence-readiness check for whether that evidence is sufficiently complete for downstream factual reasoning. Not guaranteed net worth, investment advice, transaction approval, or execution.$0.01 Base1379 ms3 payers93% up
  69. 86app.tenna.ai/api/x402/lumi/lpc_nft_infoLPC Collection Facts. Collection-level facts for the LPC NFT collection on Polygon: supply, holder count, tier distribution, concentration and marketplace activity. Every response carries the scan time, so the age of the snapshot is never hidden. Aggregates only — no owner addresses, no account-linked data, and not a valuation.$0.01 Base1133 ms3 payers93% up
  70. 86surf.cascade.fyi/api/v1/reddit/searchSearch Reddit posts$0.01 Solana1091 ms3 payers93% up
  71. 86netintel.dev/classifyClassify text into your own categories — zero-shot: supply 2–20 labels and Claude Haiku returns the best-matching category with confidence and per-label scores. Route, tag, triage, and detect intent or topic with your own taxonomy in one call.$0.005 Base1013 ms3 payers93% up
  72. 86api.dripmetrics.ai/metrics/vpinDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VPIN measures volume-synchronized order-flow imbalance (an adverse-selection proxy, not a probability); see excessVpin. Discovery examples use the latest 30m window.$0.05 Base1192 ms3 payers93% up
  73. 86x402-agent-store.rileycraig14.workers.dev/chain/chain-idThe EIP-155 chain ID for any supported network via eth_chainId — the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage.$0.001 Base779 ms3 payers86% up
  74. 86agentcheck-kohl.vercel.app/reportAgentCheck: independent report on an x402 seller before you pay it. Are its buyers real (repeat wallets on their own money) or funded by the seller itself, measured from 30 days of on-chain payments, plus results of our own paid test purchases where we have them. Query: ?domain=<seller-domain>. GET /sellers (free) lists covered domains.$0.002 Base169 ms3 payers77% up
  75. 86flat-rate-llm.kikoribera03.workers.dev/v1/content/factOne curious but true fact, in English or Spanish, filtered by topic: science, computing, history or nature. Takes parameters, returns an id so you can avoid repeats across a session, and accepts a seed for a reproducible answer.$0.005 Base300 ms3 payers77% up
  76. 86random.openverbs.com/v1/bytesGenerate cryptographically-secure random bytes, returned as hex, base64 or base64url.$0.002 Base546 ms3 payers90% up
  77. 86qr.openverbs.com/v1/qrRender text (URL, vCard, Wi-Fi config, …) as a QR code — SVG string or PNG data URL.$0.004 Base466 ms3 payers90% up
  78. 86gleif.openverbs.com/v1/searchFind Legal Entity Identifiers by legal name, optionally filtered to an ISO 3166-1 alpha-2 country. Returns matching entities with their LEI, verified legal name, registration status, jurisdiction and city/country - the reverse of lookup, for when you have a company name but need its authoritative LEI and legal identity.$0.006 Base515 ms3 payers90% up
  79. 86distribution.openverbs.com/v1/tStudent's t distribution with df degrees of freedom (> 0). `function` selects the density (pdf), cumulative distribution (cdf) or quantile / inverse-CDF.$0.004 Base795 ms3 payers90% up
  80. 86combinatorics.openverbs.com/v1/catalanThe n-th Catalan number Cₙ = C(2n, n)/(n+1), counting balanced bracketings, binary trees, and many other structures. Requires n ≤ 10000.$0.004 Base818 ms3 payers90% up
  81. 86agents.dyoeway.org/contactsExtract public business emails, phone numbers, and social profiles from a website. Batch-safe contact enrichment for autonomous agents. Input: website URL. Returns structured JSON.$0.01 Base1236 ms2 payers93% up
  82. 86laso.finance/send-bank-paymentSend dollars to a bank account by ACH. Requires a bank destination registered beforehand with addBankingDestination (list them at GET /bank-recipients), which in turn requires an approved banking profile. The on-chain x402 payment credits the user's account balance via the standard deposit webhook, so a payout that cannot be fulfilled leaves nothing stranded — retry, or recover the funds with POST /withdraw.$11.50 Base2069 ms2 payers93% up
  83. 86straits.live/api/premium/vesselsStrait of Hormuz per-vessel intelligence: the live-AIS vessel manifest (MMSI-keyed, flag derived from the MMSI MID), the OFAC-sanctioned vessels currently in the Persian Gulf window with program detail, per-vessel risk bands, latest raw AIS positions, the top AIS-dark hulls with the full dark count alongside, and OFAC + UK sanctions reference-list sizes (per-IMO multi-body detail at /api/premium/vessel/{imo}).$0.02 Base1581 ms2 payers93% up
  84. 86vape-x402.vapex402.workers.dev/data/chain_feesVAPE chain_fees — Fee-earning protocols on a chain, ranked, each with its logo (default Base) — the chain's real economic activity, not just parked capital.$0.01 Base1423 ms2 payers93% up
  85. 86vape-x402.vapex402.workers.dev/data/chain_protocolsVAPE chain_protocols — Top protocols on a chain by TVL (default Base), each with its real logo, category, and 24h/7d change — the chain-ecosystem view.$0.01 Base1172 ms2 payers93% up
  86. 86browser.gedx402.com/v1/firecrawl/mapFirecrawl v2 API proxy — map. JSON body matches https://docs.firecrawl.dev/api-reference/v2-introduction. Poll GET routes are free; POST/PUT/DELETE are x402. $0.010 USDC per request. Agent search: site map, crawl map, firecrawl map, links.$0.01 Base1142 ms2 payers93% up
  87. 86www.getbags.app/api/agent/link/pl-90ce47d5-ccb1-48c3-8388-379b07517b5cPOST /api/scan — agent-readiness scan for a domain (~$0.01 USDC per call)$0.01 Base2726 ms2 payers93% up
  88. 86tools.miniframe.com.br/cnpjLook up a Brazilian company by CNPJ (public registry). JSON body { cnpj }. Returns name, status, address, CNAE activities, share capital and public partners (QSA) with masked tax IDs; personal contact fields omitted.$0.01 Base1134 ms2 payers93% up
  89. 86api.jamton.network/v1/purchases/xauh/requests/x402Buy tokenized physical gold (XAUH) on TON through x402 using supported stablecoins. Payment settlement creates a purchase request; automated delivery continues asynchronously and can be tracked through statusUrl until COMPLETED.$1000.00 Base1966 ms2 payers93% up
  90. 86x402.devvizion.com/v0/agent-repAgent reputation snapshot (0.015 USDC). Free teaser: GET /v0/sample-rep then POST {wallet}.$0.015 Base1292 ms2 payers93% up
  91. 86flat-rate-llm.kikoribera03.workers.dev/v1/ai/image-describeDescribes what is in an image in about one second: pass an https URL or base64 and ask anything about it, from a one-line caption to reading a sign. Pairs with the rest of the chain: describe an image, translate the description, then have it read aloud. You are only charged if the description is delivered. No API key, no account.$0.005 Base372 ms2 payers86% up
  92. 86pyfile-agent.taile3ff35.ts.net:10000/secret/listList secret metadata (id, label, reads, created_at) for an access token — no values returned.$0.002 Base770 ms2 payers90% up
  93. 86api.agentmercantile.com/v1/payment-authority-snapshotProduce a factual snapshot of current x402 payment authority for one unpaid v2 requirement and one public EVM payer: selected scheme/network/asset/amount/payTo/transfer method, same-block token balance, canonical token-spender allowance when that path applies, and declared recovery-path classification. Does not sign, approve, construct a transaction, judge native gas, or recommend whether to buy.$0.005 Base1010 ms2 payers93% up
  94. 86crypto.openverbs.com/v1/orderbookLive L2 order book for a crypto perp market: aggregated bids and asks with price, size and resting-order count per level, plus the best bid/ask spread, spread % and mid price. Real-time market-depth snapshot for a coin (BTC, ETH, SOL, and more); pass `depth` for how many price levels per side. Data source: Hyperliquid (dYdX fallback).$0.002 Base902 ms2 payers86% up
  95. 86crypto.openverbs.com/v1/fundingLive perpetual-futures funding rates per market — each market's funding rate as hourly, the standard 8-hour figure and annualized %, alongside mark price and open interest. Ranked by the most extreme (|annualized|) funding by default; pass `coins` to get the funding rate for a specific market (e.g. ["BTC","ETH"]). Real-time crypto perp funding rate feed. Data source: Hyperliquid (dYdX fallback).$0.002 Base839 ms2 payers86% up
  96. 86x402.agentutility.ai/survey-sentiment-analysisScores open-ended survey responses by theme or aspect, for research agents. Same backend as sentiment-analysis. Use it as a survey sentiment analysis API, NPS verbatim classifier, or feedback sentiment scoring tool.$0.01 Base319 ms2 payers86% up
  97. 86aayatai.com/uk/bank-holidaysOfficial UK bank holidays (England & Wales, Scotland, Northern Ireland) from GOV.UK. Is a date a working day, the next holidays, working days between two dates, or the date N working days after a date (deadlines, SLAs, delivery estimates).$0.001 Base1399 ms2 payers93% up
  98. 86chain.openverbs.com/v1/blockLive block summary by number, hex, or tag (latest/earliest/pending/safe/finalized; default latest): number, hash, parent, timestamp (unix + ISO), transaction count, gas used/limit, base fee and miner. Reads live on-chain data with automatic endpoint fallback.$0.001 Base368 ms2 payers90% up
  99. 86iso.openverbs.com/v1/currencyLook up an active ISO 4217 currency by its alphabetic code or numeric code. Provide exactly one field. Returns the code, numeric code, name and number of minor units (decimal places).$0.002 Base425 ms2 payers90% up
  100. 86wikidata.openverbs.com/v1/entityFetch a Wikidata entity by Q-id: label, description, aliases and its claims (property → values).$0.006 Base407 ms2 payers90% up