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. 100www.x402pulse.dev/v1/travel/weatherWeather anywhere: current conditions, the next 12 hours and a daily forecast up to about 9 days (high, low, precipitation and its chance, wind) for any coordinates or airport, in °C and °F. U.S. locations add the National Weather Service forecast in words and any active weather alerts. Sources: MET Norway worldwide, NWS for the U.S.$0.0014 Base240 ms7 payers100% up
  2. 100api.stablecoingateways.com/v1/fx/convertCurrency Converter (ECB)$0.001 Base144 ms7 payers100% up
  3. 100api.stablecoingateways.com/v1/business-daysBusiness days and public holidays: check if a date is a business day, add or subtract N business days, count business days between dates, or list holidays, for 250 countries, 630 subdivisions (e.g. US-NY, GB-ENG) and 31 stock exchanges, 2025-2030. Use for payment due dates, T+N settlement, delivery estimates and SLAs. Data: python-holidays (MIT). Signed receipt.$0.001 Base87 ms7 payers100% up
  4. 100api.agentweather.io/v1/decide/provider-healthAI provider health reading for one provider (GET /v1/decide/provider-health?provider=morph; a model id also works): the vendor's own status-page indicator and active incidents, the share of disturbed checks in the last 24h of our record (checked every 10 min), and a reading field (go, caution, no_g…$0.005 Base151 ms7 payers100% up
  5. 100api.loyalspark.online/x402-gateway/analyticsFetch merchant loyalty program analytics, mint/redeem volume, and holder metrics. Onchain loyalty on Base: brands launch rewards in minutes, customers earn with every purchase, AI agents automate the rest via REST and MCP. Pay-only works: the paying wallet is the caller; API key optional. Scoped to the key's wallet. Skill guides: loyalspark.online/.well-k...$0.005 Base87 ms7 payers100% up
  6. 100api.glianalabs.com/x402/tools/swap-quoteGlianaAI - Pay-per-call AI models, live market data, SEC filings and identity APIs, no signup, USDC. This resource: tools/swap-quote. Input: { chain, from, to, amount, to_chain?, slippage_pct?, limit? }. https://ai.glianalabs.com$0.002 Base70 ms7 payers100% up
  7. 100api.myceliasignal.com/oracle/price/btc/jpyReal-time Bitcoin price in JPY, multi-exchange aggregated oracle for Japanese markets — Ed25519 signed attestation$0.01 Base228 ms7 payers100% up
  8. 100x402.forgemesh.io/endpoint-of-the-dayEndpoint-of-the-day picker for the ForgeMesh x402 fleet: every UTC day one of 500+ paid routes across 11 services is featured with its price, description, input schema, example output, and payment instructions. Rotation is deterministic — no randomness, no repeats until the whole pool has had its day. Optional date (YYYY-MM-DD) to preview a specific day's pick.$0.005 Base275 ms7 payers100% up
  9. 100x402-v2-mint-json-sort.vercel.app/v1/json-sortRecursively sort object keys; return canonical compact JSON. Offline. Amp port.$0.003 Base251 ms7 payers100% up
  10. 100x402-v2-mint-doi-metadata.vercel.app/v1/doi-metadataDOI metadata via Crossref (primary) + OpenAlex fallback. Title/authors/year/venue/URL.$0.005 Base298 ms7 payers100% up
  11. 100agent-treats-production.up.railway.app/api/excuseCreative technically-flavored excuse for being late or unresponsive.$0.001 Base160 ms7 payers100% up
  12. 100hello-world-x402.vercel.app/worldReturns "World Hello" - UPDATED TEST v2.0$0.001 Base281 ms7 payers100% up
  13. 100api.signalfuse.co/v1/arena/ema_5_breakout/SOLIndividual arena strategy signal$0.001 Base167 ms7 payers100% up
  14. 100api.signalfuse.co/v1/arena/vwap_reversion/SOLIndividual arena strategy signal$0.001 Base103 ms7 payers100% up
  15. 100glim.sh/api/v1/twitter/getFetch a tweet (with thread context) by URL/id or a user (with recent tweets) from one URL$0.005 Solana146 ms6 payers100% up
  16. 100defillama.use.x402atlas.com/dexsDEX volumes by DefiLlama — all decentralized exchanges with trading-volume summaries and charts.$0.005 Base63 ms6 payers100% up
  17. 100squeezeos-api.onrender.com/api/quick/quote/AAPLStock quote API for AI agents — get a live/latest US equity price and volume reading for one ticker from the first available real provider.$0.001 Base103 ms6 payers100% up
  18. 100toolrail.dev/latam/ivaVAT (IVA) rates for 17 Latin American countries, including Argentina, Chile, Colombia, Mexico, Peru (IGV) and the Dominican Republic (ITBIS): standard and reduced rates, plus net-to-gross or gross-to-net calculation. Reviewed dataset with source and review date; Brazil is excluded because it has no single rate. Use when pricing, quoting or invoicing in Latin America and you need the local VAT rate or the amount with or without tax.$0.002 Base276 ms6 payers100% up
  19. 100squeezeos-api.onrender.com/api/quick/headline/AAPLStock news headline API. Get the latest available market headline for a ticker symbol from a live data provider.$0.001 Base103 ms6 payers100% up
  20. 100crypto.openverbs.com/v1/protocolTotal value locked (USD) for one DeFi protocol by DefiLlama slug or name (e.g. "aave-v3", "lido", "uniswap-v3"): current TVL, per-chain TVL breakdown, 1h/1d/7d TVL change, category, chains, token symbol and market cap. Optional `chain` also returns that chain's TVL for the protocol. Unknown names return `found:false` with slug `suggestions`.$0.001 Base45 ms6 payers100% up
  21. 100keyronne.com/api/colorParse any CSS color (hex, rgb(), hsl()) and emit all three formats plus relative luminance. Compute WCAG contrast ratios against a background with AA/AAA pass-fail for normal and large text, and lighten, darken, or mix colors. Built for agents generating accessible UI themes. POST a JSON body like: {"color":"#3498db","background":"#ffffff"}$0.001 Base70 ms6 payers100% up
  22. 100squeezeos-api.onrender.com/api/quick/searchStock ticker and company search API. Find US equity symbols by company name or ticker for trading, research, and autonomous-agent workflows.$0.001 Base101 ms6 payers100% up
  23. 100api.solenrich.com/entrypoints/stonk-quote/invokeCost and payback of one StonkFun trade at one size, no swap: entry and exit cost (transfer tax + price impact at size), round-trip % and the breakeven price move, your pro-rata share of each payout with a dust warning, expected payout over the hold from the yield window with real history, and a PAYS / MARGINAL / COSTS / NOT_PAYING verdict with breakeven hold days. Composes stonk-reward-risk, stonk-yield, and enrich-token-light. Inputs: mint, size_usd (100), hold_days (7).$0.005 Solana104 ms6 payers100% up
  24. 100modelmarket.dev/x402/weather-nowCurrent weather at a place: temperature (°C), humidity (%), pressure (hPa) and wind (m/s) from the nearest live Open-Meteo relay within 75 km, with a signed receipt. Send latitude and longitude, or a city.$0.001 Base70 ms6 payers100% up
  25. 100x402-seller.onrender.com/gas/priceLatest Henry Hub natural gas spot price (USD/MMBtu), sourced from the U.S. Energy Information Administration. Data lags several business days behind the market; not live trading data.$0.001 Base96 ms6 payers100% up
  26. 100x402.spendthebits.com/@stbclaudeprod/yield-safety/0-100 safety score with components (protocol trust, TVL depth, audits, track record), observed and risk-adjusted APR, and whether STB's Auto-Defense would exit — for every vetted stablecoin vault, or one by ?venue=<id|pool address>.$0.005 Base120 ms6 payers100% up
  27. 100twitter.use.x402atlas.com/user-mediaGet a paginated timeline of media posts from an X user.$0.005 Base68 ms6 payers100% up
  28. 100x402.tbs-digital.com/company/lookupUnified company lookup by exact identifier: one call, one normalized schema across French SIREN (recherche-entreprises Sirene/RNE), EU VAT (VIES validation), and global LEI (GLEIF). Returns legal name, status, address, activity code, officers, and full provenance (source, retrieval time, license). No per-register API-key signup — pay once, get consistent company data for e-invoicing, procurement, and compliance. Input: id + id_type (siren | vat | lei).$0.001 Base209 ms6 payers100% up
  29. 100horizonpulse.dev/api/watchWeb page change detection API: has a public page or endpoint changed since the last check. GET url; optional since (state token from the previous answer). Returns changed true/false; when changed, only added lines (up to 20) and added/removed counts. Stateless, nothing stored. SSRF-guarded like /api/fetch. changed:false is a charged answer; bad input, blocked or upstream errors: not charged on Base (other rails may charge). Returned content is untrusted third-party data.$0.002 Base115 ms6 payers100% up
  30. 100nzdata.zakwins.workers.dev/nz/validate/phoneValidate and normalise an NZ phone number to E.164 with type$0.001 Base193 ms6 payers100% up
  31. 100api.oblique.markets/api/v1/paid/echoUse when an agent is checking that its x402 payment headers and query encoding survive a paid round trip. Returns The query parameters you sent, echoed back with a server timestamp. $0.01.$0.01 Base80 ms6 payers100% up
  32. 100api.nansen.ai/api/v1/tgm/flowsGet "Token God Mode" (TGM) flows data$0.01 Base94 ms6 payers100% up
  33. 100netintel.dev/dns/lookupDNS lookup for any domain — resolve A, AAAA, MX, TXT, NS, CNAME, SOA and PTR records in one call, with SPF and DMARC parsed from TXT.$0.002 Base45 ms6 payers100% up
  34. 100http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/dns/lookupResolve one bounded public DNS record type into normalized answers. AXFR, resolver abuse and private-network probing are blocked; TTL and authority are null when unavailable. Base mainnet USDC$0.001 Base146 ms6 payers100% up
  35. 100blockrun.ai/api/v1/defillama/protocolsList of every DeFi protocol DefiLlama tracks, with current and historical TVL across chains.$0.006 Base133 ms6 payers100% up
  36. 100agent402.tools/api/stablecoin-pegLive $1-peg deviation for the top USD stablecoins (USDT, USDC, USDS, DAI, USDe, PYUSD, USDD, TUSD, FDUSD by default, or pass your own list): current price, deviation in basis points, 24h high/low, worst 24h deviation, market cap, and an on-peg / stressed / depegged status. Data provided by CoinGecko.$0.003 Base290 ms6 payers100% up
  37. 100x402.glassnode.com/v1/metrics/market/mvrv_less_155Short Term Holder MVRV — Short Term Holder MVRV (STH-MVRV) is the MVRV ratio computed using only UTXOs younger than 155 days, serving as an indicator of short-term investor behaviour. Data by Glassnode.$0.05 Base184 ms6 payers100% up
  38. 100api.24klabs.ai/api/uuid-generateGenerate v4 (random) or v5 (name-based) UUIDs in a batch; optional uppercase / no-hyphens.$0.001 Base299 ms6 payers100% up
  39. 100blockrun.ai/api/v1/defillama/protocol/aaveDetailed TVL + breakdown for a single protocol. Pass slug as `/v1/defillama/protocol/{slug}` (e.g. `aave`, `uniswap`).$0.006 Base88 ms6 payers100% up
  40. 100agent402.tools/api/ttsConvert text to speech with the eleven-v4-turbo model, priced per request from the length of the text. The quote is $0.005 plus $0.0575 per 1,000 characters of text, rounded up to the next $0.001 (2,000 characters: $0.120). Returns audio (the base64-encoded file in the format asked for: mp3, opus, aac, flac, wav or pcm) with model, voice, format and chars (the characters spoken).$0.007 Base94 ms6 payers100% up
  41. 100agent402.tools/api/timezone-convertConvert a datetime from one IANA timezone to another. Accepts ISO 8601, Unix timestamps (seconds or milliseconds), or natural date strings. Returns the converted time in both timezones with UTC offset.$0.001 Base106 ms6 payers100% up
  42. 100agent402.tools/v1/images/proHigher-fidelity text-to-image on the OpenAI images wire: a prompt in, one 1024x1024 image out as inline base64, served by a pro-grade diffusion model in about ten seconds. Use it when an agent needs a finished picture for a page, a post or a product and quality matters more than the cheapest draft.$0.05 Base92 ms6 payers100% up
  43. 100api.craigmbrown.com/v1/services/reputation.lookupLook up an agent's BlindOracle reputation before you transact with it: score, level and badge, plus counts of its recorded runs (successful and failed). Run counts are the agent's own executions, not settled marketplace jobs; an agent with no history scores zero. | BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonomous AI agents; self-built multi-agent framework (42+ agents); ERC-8004 agent passport #60979; paid via x402 in USDC on Base$0.01 Base121 ms6 payers100% up
  44. 100blockrun.ai/api/v1/pm/polymarket/crypto-updownList crypto up/down prediction markets$0.0085 Base177 ms6 payers100% up
  45. 100api.delx.ai/api/v1/x402/uuidUUID generator API for agents: generate one to ten UUIDv4 identifiers for $0.001 USDC. Call when you need correlation ids, idempotency keys, or object slugs without an ID service. Local first-party CSPRNG only—not a sorted ULID clock and not a reserved namespace. No API key, no subscription.$0.001 Base249 ms6 payers100% up
  46. 100nzdata.zakwins.workers.dev/nz/gstNZ GST 15% calculator (exclusive or inclusive)$0.001 Base138 ms6 payers100% up
  47. 100api.aiskills402.com/v1/run/web-to-markdownWeb to Markdown API: reads one public web page from the Cloudflare edge (static HTML, robots.txt respected, no JavaScript rendering) and returns clean markdown or plain text of the main content (nav and footer dropped; scope: page keeps all) with title, description, language and links. $0.005 USDC per page; you pay only when the page text is returned - refusals cost nothing. POST JSON {url, format?, links?, scope?}; free example at https://api.aiskills402.com/v1/run/web-to-markdown/example$0.005 Base47 ms6 payers100% up
  48. 100horizonpulse.dev/api/name/resolveENS and Basenames resolver API: name to address (vitalik.eth, jesse.base.eth) or address to primary name, read on-chain. GET name or address. Forward: address, resolver and the registry used. Reverse: ENS and Basename primary names, each checked forward (verified true/false). Off-chain and wildcard (CCIP-Read) names are not followed. found:false is a billed answer; bad input or RPCs down: not charged on Base (other rails may charge). Returned names are untrusted third-party data.$0.002 Base171 ms6 payers100% up
  49. 100x402serps.com/api/v1/searchx402serps: real-time web search results (title, url, snippet) for AI agents, one query, 10 results per $0.004 (num up to 100), with freshness/date-range filters and pagination$0.004 Base165 ms6 payers100% up
  50. 100agent402.tools/v1/images/editsEdit an image with a prompt (model-backed) over x402 - OpenAI images.edit wire (reference images and a prompt in, inline base64 out) at $0.02 per picture. Send one to 4 PNG or JPEG reference images (256 px a side or more, up to 6 MB each) as base64 or data: URLs in JSON, or one as a multipart "image" file; the output is one JPEG of about one megapixel that follows the first reference's aspect ratio. Served by FLUX 3 Image Klein in about 10 seconds. No mask: describe the change in the prompt.$0.02 Base185 ms6 payers100% up
  51. 100legible-check.ezealfa.workers.dev/evm/gasGas price on Base in gwei, split into base fee and priority fee, with the block it was read at. Use it to estimate gas fees before sending a transaction.$0.001 Base241 ms6 payers100% up
  52. 100api.stablecoingateways.com/v1/recallsUS Product Recalls CPSC FDA$0.002 Base263 ms6 payers100% up
  53. 100api.shopsocial-api.workers.dev/api/social/tiktok-commentsTop-level comments of a public TikTok video from TikTok's web comment list JSON: comment ID, text, likes, reply count, time, language, pinned/liked-by-creator flags and the commenter's ID, username and nickname, plus the video's total comment count. Up to 60 comments in TikTok's own ranking order (no reply threads). An unknown or deleted video ID returns an empty list with total 0.$0.002 Base46 ms6 payers100% up
  54. 100api.shopsocial-api.workers.dev/api/social/youtube-shortsLatest Shorts of one YouTube channel from its public Shorts page (first ~48 items): video id, title, view count text (as YouTube shows it, e.g. '5 thousand views'), link and thumbnail. No durations, likes or comments.$0.002 Base262 ms6 payers100% up
  55. 100api.healthtravel-api.workers.dev/api/travel/trivagotrivago hotel prices for a destination: the hotels trivago lists for a city search (usually ~35) with name, location note, lowest price shown per night, guest rating out of 10 with review count, stars and trivago URL, plus trivago's destination price facts (typical nightly range, cheapest and most expensive month). Prices are in the currency trivago picks for the visitor region (reported in the output); not a dated availability search.$0.002 Base197 ms6 payers100% up
  56. 100api.fadeandco.workers.dev/api/dev/nba-statsNBA player season statistics, sorted leaderboard: per player team, position, age, games, minutes, points, rebounds, assists, steals, blocks, turnovers, FG/3P/FT made-attempted-percentage, double-doubles, triple-doubles (per-game and totals). Regular season or playoffs, 2003 to now (season = year it ends, 2026 = 2025-26). Data from ESPN's public stats API (stats.nba.com blocks automated access).$0.002 Base217 ms6 payers100% up
  57. 100api.webintel-api.workers.dev/api/search/seo-audit-toolOn-page SEO audit of one public page from its HTML only: title and description length, one H1, canonical link, language, viewport, robots meta, Open Graph tags, images without alt text, internal and external links, word count. Returns each check with its value and pass or fail. No Core Web Vitals, backlinks or keyword volumes.$0.002 Base64 ms6 payers100% up
  58. 100api.webintel-api.workers.dev/api/search/theintercept-articlesThe Intercept articles from its public RSS feed (keyword filter on title/summary/categories). Latest items only. Public feed, no key.$0.002 Base49 ms6 payers100% up
  59. 100x402-data-api.sigrunner.workers.dev/chain/allowanceERC-20 allowance(owner, spender) on Base, raw + formatted, flags unlimited approvals.$0.002 Base37 ms6 payers100% up
  60. 100api.tradeenergy-api.workers.dev/api/energy/irena-renewable-cost-dbIRENA renewable energy statistics for one country: installed electrical capacity (MW) and electricity generation (GWh) by technology (total renewable, solar PV, onshore and offshore wind, hydropower, bioenergy, geothermal and more) for recent years, from IRENA's public IRENASTAT database. Levelised generation costs (LCOE) are not in this API and are not included.$0.002 Base82 ms6 payers100% up
  61. 100api.jobsproperty-api.workers.dev/api/realestate/zillow-rentals-scraper-ppeTypical market rent for a US ZIP code from the Zillow Observed Rent Index (ZORI, Zillow Research's official public data, all home types, smoothed, USD per month): latest monthly value, change vs 12 months earlier, monthly history, plus city, metro and county. Index data, not individual rental listings (zillow.com listing pages block automated access). Updated monthly by Zillow; ZIPs with too few rentals are not covered.$0.002 Base40 ms6 payers100% up
  62. 100api.webintel-api.workers.dev/api/search/unpaywallUnpaywall open-access lookup by DOI (free API; it requires a contact e-mail set in UNPAYWALL_EMAIL, not a key): is the paper open access, OA status, best free full-text link, journal and publisher. Returns metadata and links only, not the PDF.$0.002 Base42 ms6 payers100% up
  63. 100api.jobsproperty-api.workers.dev/api/realestate/trade-me-propertyNew Zealand property listings from realestate.co.nz (public search, no key): address, suburb, district, region, coordinates, price as advertised (often by negotiation, deadline or auction), bedrooms, bathrooms, land area, property type, listing date, agency and link, newest first, plus the total match count. Filter by region, category (sale, rent, rural, lifestyle, commercial, business) and minimum bedrooms.$0.002 Base44 ms6 payers100% up
  64. 100x402-data-api.sigrunner.workers.dev/ai/askCheap LLM answer (Llama 3.2 3B) for a prompt up to 500 chars.$0.002 Base41 ms6 payers100% up
  65. 100nojunk-geo.mick8511.workers.dev/geocodeGeocode a place name or address to coordinates, structured address and bounding box$0.002 Base265 ms6 payers100% up
  66. 100api.companyrecords-api.workers.dev/api/gov/global-court-records-aggregatorCourt records from two official open sources in one answer: US federal dockets matching a term (CourtListener) and Indian Supreme Court judgment metadata for a year (AWS Open Data). Each item names its source. Not a full court index of any country.$0.002 Base207 ms6 payers100% up
  67. 100formwerk.halowerk.com/v1/pruef/formwerk/vor-einwilligung/eingabefeldPrüft am Objekt eingabefeld den Befund Übermittlung vor Einwilligung.$0.001 Base166 ms6 payers100% up
  68. 100api.healthtravel-api.workers.dev/api/travel/yatcoYachts for sale on YATCO (about 6,000 active listings), optionally by builder (e.g. sunseeker, benetti): name, builder, model, year, length, asking price with currency (or price on application), category, staterooms, location, days on market and listing URL, 12 per page, from the public JSON route behind yatco.com search. Values are as the brokers entered them.$0.002 Base45 ms6 payers100% up
  69. 100api.tradeenergy-api.workers.dev/api/logistics/incoterms-complianceIncoterms 2020 responsibility matrix: for one rule (EXW, FCA, CPT, CIP, DAP, DPU, DDP, FAS, FOB, CFR, CIF) or all 11, the transport modes it fits, where risk passes, and whether seller or buyer handles main carriage, loading, export and import clearance, import duties, unloading and insurance. Optional check flags a sea-only rule used for containers or non-sea transport. A factual summary, not the ICC rule text or legal advice.$0.002 Base63 ms6 payers100% up
  70. 100sift.srv1996466.hstgr.cloud/v1/fetchFetch a web page as clean Markdown. Readable main text of any public web page as Markdown, with title, author, date and word count. Boilerplate, menus and ads removed.$0.003 Base142 ms6 payers100% up
  71. 100api.tickersfeed.net/gasCurrent gas prices on Ethereum mainnet and Base — base fee, priority fee, and EIP-1559 estimates in Gwei as JSON. No API key required. Use for: gas fee check before transacting, transaction cost estimation, L1 vs L2 fee comparison, onchain timing. $0.001 USDC per call.$0.001 Base95 ms6 payers100% up
  72. 100api.loyalspark.online/x402-gateway/workflow/generate-program-defaultsGenerate recommended loyalty token economics, tiers, and reward defaults for a business. Onchain loyalty on Base: brands launch rewards in minutes, customers earn with every purchase, AI agents automate the rest via REST and MCP. Send x-api-key: lsk_... (or Authorization: Bearer lsk_...) with the payment; without a live key you are not charged. Scoped to ...$0.001 Base109 ms6 payers100% up
  73. 100api.loyalspark.online/x402-gateway/recipient-api/cancel-offerCancel own P2P swap offer$0.005 Base92 ms6 payers100% up
  74. 100api.loyalspark.online/x402-gateway/recipient-api/workflow/prepare-reward-redemptionPrepare the token approval and redemption steps for a customer reward. Onchain loyalty on Base: brands launch rewards in minutes, customers earn with every purchase, AI agents automate the rest via REST and MCP. Pay-only works: the paying wallet is the caller; API key optional. Scoped to the key's wallet. Skill guides: loyalspark.online/.well-known/skills...$0.005 Base101 ms6 payers100% up
  75. 100x402engine.app/api/llm/gpt-5-nanox402engine — OpenAI's cheapest GPT-5 tier — ultra-affordable for high-volume agent tasks$0.0024 Base268 ms6 payers100% up
  76. 100api.glianalabs.com/x402/tools/web-archiveGlianaAI - Pay-per-call AI models, live market data, SEC filings and identity APIs, no signup, USDC. This resource: tools/web-archive. See how long a site has existed and what it used to say, from the Internet Archive. https://ai.glianalabs.com$0.002 Base257 ms6 payers100% up
  77. 100x402-v2-mint-pii-redact.vercel.app/v1/pii-redactDeterministic PII redaction: emails, phones, SSN-shaped, Luhn cards, IPv4 → typed placeholders. No network. Amp port.$0.003 Base244 ms6 payers100% up
  78. 100x402-v2-mint-earthquake-feed.vercel.app/v1/earthquake-feedUSGS earthquake GeoJSON feed (keyless). Window day|week|month (significant preferred) → quake list.$0.003 Base290 ms6 payers100% up
  79. 100x402-v2-mint-concierge-reader.vercel.app/v1/concierge-readerConcierge reader: send a public URL plus the JSON template you want; get that page's data back filled into your template. Free email field type (syntax, MX, disposable, role; no SMTP probe). Bad/private url, format >8KB, slow or unreachable page -> 400 charged:false before payment.$0.005 Base262 ms6 payers100% up
  80. 100joyful-charm-production-bf6d.up.railway.app/trades/insider/cookSEC Form 4 trades by a specific corporate insider, matched by name substring (path param, e.g. /trades/insider/musk) — track an executive's or director's personal buying and selling across all companies they report for. Returns JSON trade records with ticker, role, type, shares, price, and value.$0.001 Base258 ms6 payers100% up
  81. 100gateway.spraay.app/api/v1/rpc/chainsList supported RPC chains and methods.$0.001 Base99 ms6 payers100% up
  82. 100api.signalfuse.co/v1/arena/vwap_reversion/BTCIndividual arena strategy signal$0.001 Base100 ms6 payers100% up
  83. 100api.signalfuse.co/v1/arena/ema_5_breakout/DOGEIndividual arena strategy signal$0.001 Base106 ms6 payers100% up
  84. 100glim.sh/api/v1/amazon/searchSearch Amazon by keyword or browse bestsellers by category slug$0.005 Solana148 ms5 payers100% up
  85. 100api.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 Base83 ms5 payers100% up
  86. 100x402.aispace.bot/api/v1/audio/queueAsync music/audio-track generation on Venice (Stable Audio, ElevenLabs Music, MiniMax, Lyria, ACE-Step), paid per request in USDC on Base via x402, no API key. Short-clip model ids via GET /api/v1/models?type=music; 60s-floor ids (ACE-Step) only with ?floor=all. Lifecycle: quote,$0.095 Base182 ms5 payers100% up
  87. 100rpc.nodeflare.app/unichain/x402Unichain RPC (chain 130): JSON-RPC over HTTPS on NodeFlare's own bare-metal nodes. Pay per request in USDC, no account or API key - built for AI agents. All methods including eth_getLogs, eth_call, trace, and debug (archive) - good for indexing, event queries, and simulation. Simple calls $0.001; heavy calls priced by compute units. One of the first independent x402 RPC providers for this chain.$0.001 Base169 ms5 payers100% up
  88. 100x402-mcp.onrender.com/base/tx-decisionShould I submit this Base transaction now, and at what fee? One call returns submit-or-wait, max fee per gas and priority fee in gwei (EIP-1559), and the estimated cost in USD for an ETH transfer, USDC ERC-20 transfer, or x402 settlement on Base mainnet. Live gas price and congestion from Base RPC blocks, no API key. For bots that queue transactions: call before every send.$0.01 Base101 ms5 payers100% up
  89. 100iot.halowerk.com/v1/sensor-calibrationFits reference = slope × observed + offset with ordinary least squares over paired caller-supplied readings. It reports residual diagnostics and does not claim traceability, uncertainty accreditation or suitability beyond the supplied calibration range.$0.003 Base139 ms5 payers100% up
  90. 100rpc.nodeflare.app/data/balances/x402Multi-chain balances API: native + ERC-20 token balances for one address across up to 17 EVM chains (Ethereum, Base, Arbitrum, Optimism, BNB, and young chains like Robinhood, Ink that Alchemy/Moralis omit) in a single request. Pay per call in USDC, no account or API key - built for AI agents. Priced about $0.0003 per chain.$0.002 Base175 ms5 payers100% up
  91. 100defillama.use.x402atlas.com/options-chainOptions volumes for one chain by DefiLlama — options-protocol volume on a single chain.$0.005 Base53 ms5 payers100% up
  92. 100offercheck.offercheck.workers.dev/v1/priceCurrent prices for cryptocurrencies and tokens by symbol (btc, eth, sol, usdc, ...), CoinGecko slug, or on-chain token address on Base, Ethereum, Arbitrum, Solana and 100+ chains, using DeFiLlama's aggregated DEX/CEX pricing with a per-asset confidence score. Quote in USD or any ECB fiat currency. Up to 25 assets per call. $0.002 per call.$0.002 Base62 ms5 payers100% up
  93. 100x402.tbs-digital.com/geo/forwardForward geocoding for AI agents: turn a place name or address into coordinates. Returns the best-match latitude, longitude, country and ISO country code, administrative regions (admin1/admin2), population, IANA timezone and GeoNames feature code. Query by q= or address=. Sourced from Open-Meteo geocoding — keyless, unified schema, stablecoin-payable.$0.001 Base189 ms5 payers100% up
  94. 100toolrail.dev/cl/rutValidate and format a Chilean RUT (tax ID) including check digit (modulo 11). Use when a Chilean RUT is entered in a form or file and you must catch typos before saving.$0.002 Base107 ms5 payers100% up
  95. 100iot.halowerk.com/v1/edge-compute-bidFilters caller-supplied bids by CPU, memory and latency constraints, computes workload cost from quoted unit prices, and ranks feasible candidates by total cost then latency. It does not contact providers, attest hardware or place a bid.$0.004 Base131 ms5 payers100% up
  96. 100agent.pocket.network/v1/meme-watchA rolling 60-minute feed of Solana memecoin launches as one JSON object. POST /v1/launches with an optional dex filter (pumpfun, pumpswap, meteora) plus limit, age, volume, liquidity and sort options; each launch carries pool and token address, venue, price, FDV, volume, transaction count and drawdown. Point-in-time and served from cache. Pay per request in USDC; no account, no API key.$0.005 Base136 ms5 payers100% up
  97. 100keyronne.com/api/dnsResolve DNS records over DNS-over-HTTPS: A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV, PTR and more. Returns parsed answers with TTLs and the response status. Built for agents checking mail routing, domain config, or propagation. POST a JSON body like: {"name":"example.com","type":"MX"}$0.002 Base64 ms5 payers100% up
  98. 100quantum.halowerk.com/v1/shors-threat-indexEstimates logical qubits and logical gates from algorithm family and key size, applies a caller-supplied error-correction overhead, and reports capacity and runtime ratios. The formulas are coarse planning heuristics, not cryptanalytic proof or a forecast of when cryptographically relevant quantum computers will exist.$0.003 Base150 ms5 payers100% up
  99. 100jmt-x402-proxy.jmthomasofficial.workers.dev/v2/api/edgar-company-lookupCompany intelligence lookup: resolve a US-listed company ticker through the SEC EDGAR company ticker dataset. Returns CIK, ticker, and registrant name for company research, SEC filing discovery, and equity due diligence.$0.002 Base222 ms5 payers100% up
  100. 100defillama.use.x402atlas.com/batch-historicalBatch historical token prices by DefiLlama — prices for many coins at many timestamps in one call (coins is a JSON map).$0.005 Base67 ms5 payers100% up