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. 100agent402.tools/api/edgar-company-lookupResolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns ticker, cik (zero-padded, 0000320193), cikInt (320193) and the registered company name. Backed by SEC's company_tickers.json (public domain). A company name sent where the ticker goes is answered with a 404 that names the likely tickers ("Tesla" -> TSLA).$0.001 Base107 ms4 payers100% up
  2. 100agent402.tools/api/transcribeTranscribe audio to text with the gpt-transcribe model. Provide a URL to an audio file (mp3, wav, m4a, etc.) and get back the transcript. Add diarize:true for speaker labels, word timestamps and a language confidence score (the scribe-v2 model, same price). No API key needed; pay per call via x402. Max 4 minutes of audio, 25 MB file size; /api/transcribe-pro takes the same models to 10 minutes.$0.03 Base143 ms4 payers100% up
  3. 100agent402.tools/api/treasury-yield-curveLatest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), public domain. No params - always returns the most recent published curve, which trails today by a business day or two; for a date range use treasury-yield-history. This product uses the FRED(R) API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.$0.005 Base274 ms4 payers100% up
  4. 100api.sirenic.eu/v1/eu/rechercheName search, European registers. Local copies, all searched without pays: Belgium, Croatia, Cyprus, Estonia, Ireland, Latvia, Lithuania, Norway, Romania, Sweden, Spain (BORME); live only with pays set: Czechia, Finland, Slovakia, Switzerland; Poland through GLEIF; DK/UK if enabled; +GLEIF. Top 10, score_confiance. BE, CH, CZ, DK, EE, HR, LT, LV, NO, RO, SE, SK: legal persons only (no FIE, ENK, IK), nor ES sole traders; no GLEIF sole proprietor or CH branch (ecartes; ecartes_non_mesures (LV/NO)).$0.003 Base166 ms4 payers100% up
  5. 100stabletravel.dev/api/flightaware/airports/KSFO/weather/observationsGet weather observations (METAR) for a specific airport$0.004 Base117 ms4 payers100% up
  6. 100x402-factory.com/v1/recalls/deltaOnly the product recalls changed since your cursor (delta of /v1/recalls) — Keyset delta of /v1/recalls: pass since=<next_cursor from your last call> and get only the product recalls added or changed after it, plus changed_count and a new next_cursor. Omit since once to bootstrap. Cursors are stable across restarts. Poll the free sibling /v1/recalls/changes for counts and pay only when there is…$0.005 Base63 ms4 payers100% up
  7. 100stabletravel.dev/api/flightaware/airports/KJFK/weather/observationsGet weather observations (METAR) for a specific airport$0.004 Base204 ms4 payers100% up
  8. 100api.sitecheck-api.workers.dev/api/domainDomain lookup over RDAP (the successor of WHOIS) and DNS: registered or available, registrar, creation, update and expiry dates, days until expiry, age, status codes, DNSSEC, name servers, plus whether it resolves (IPv4/IPv6) and its mail servers. Any TLD with an RDAP service; others are inferred from DNS.$0.002 Base77 ms4 payers100% up
  9. 100agent-tools-production-e6aa.up.railway.app/v1/convertConvert office documents and images between formats. Documents (docx, doc, xlsx, xls, pptx, ppt, odt, rtf, html, txt, csv) to pdf, docx, odt, txt, xlsx or csv; images between png, jpg, webp and gif. Use when a user or system needs a file in a different format. Send {url} or {base64}, plus filename (with extension) and to. Returns the converted file. Errors: 400 unsupported pair, 422 conversion failed.$0.02 Base146 ms4 payers100% up
  10. 100agent402.tools/api/cve-lookupLook up a CVE by id, or search CVEs by keyword or product: the NVD description, CVSS severity and vector (v4.0, v3.1, v2), CWE weaknesses, affected products and versions (CPE), and reference links, joined with the EPSS exploitation probability (next 30 days) and whether CISA lists it as a known exploited vulnerability (date added, due date, ransomware use). This product uses the NVD API but is not endorsed or certified by the NVD.$0.005 Base107 ms4 payers100% up
  11. 100x402.glassnode.com/v1/metrics/market/mvrv_more_155Long Term Holder MVRV — Long Term Holder MVRV (LTH-MVRV) is the MVRV ratio computed using only UTXOs with a lifespan of at least 155 days, serving as an indicator of long-term investor behaviour. Data by Glassnode.$0.05 Base182 ms4 payers100% up
  12. 100blockrun.ai/api/v1/pm/polymarket/candlesticks/:hashGet historical OHLCV candlestick data for a market. Not charged when no candles match$0.0085 Base225 ms4 payers100% up
  13. 100blockrun.ai/api/v1/defillama/prices/coingecko:ethereumToken price lookup. Pass coin identifiers as `/v1/defillama/prices/{coins}` (e.g. `coingecko:bitcoin`, `ethereum:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2`). Supports comma-separated lists.$0.002 Base98 ms4 payers100% up
  14. 100api.vextorium.com/v1/text-diffCompare two texts by lines or words: similarity %, added and removed items, list of changes with positions, and a unified diff. For contract versions, prompts, configs or scraped pages.$0.003 Solana215 ms4 payers100% up
  15. 100api.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 Solana242 ms4 payers100% up
  16. 100api.vextorium.com/v1/eu-inflationHarmonised inflation (HICP annual rate) of any EU/EEA country, the EU or the euro area for the last months; with country=todos, a ranking of all countries for the latest month. Official Eurostat data.$0.004 Solana268 ms4 payers100% up
  17. 100api.vextorium.com/v1/eur-fx-historyDaily ECB reference exchange rate of a currency against the euro for up to 5 years: latest, change, high, low, average and annualized volatility, with the series.$0.004 Solana275 ms4 payers100% up
  18. 100api.vextorium.com/v1/fear-greedCrypto Fear & Greed Index (0-100) with classification. Data source: Alternative.me (attribution included in the response).$0.005 Solana297 ms4 payers100% up
  19. 100agent402.tools/api/exchangesCrypto exchanges ranked by trust score: id, name, country, year established, trust score (1-10) and rank, 24h volume in BTC (and normalized), centralized flag and URL; limit 1-100 (default 25). Pass `exchange` (an id such as binance, gdax, kraken) for ONE exchange's profile instead: the same fields plus description, trade volume incl. and excl. wash-trade normalization, ticker count and social links. Cached in-process for 5 minutes. Use exchange-tickers for an exchange's markets.$0.005 Base145 ms4 payers100% up
  20. 100agent402.tools/api/chain-infoOne-call chain state snapshot: chain id, latest block number, and current gas price (wei + gwei) for Ethereum, Base, Polygon, Arbitrum, or Optimism. Keyless multi-endpoint failover.$0.001 Base150 ms4 payers100% up
  21. 100agent402.tools/api/llmLLM inference ($0.010/call via x402 or MPP)$0.01 Base115 ms4 payers100% up
  22. 100agent402.tools/api/uuidUUIDs on demand: version 4 (random) or version 7 (time-ordered, sortable), up to 100 per call. Use it when an agent needs identifiers for records, requests or files, or a sub-cent call to test an x402 client end to end before buying anything larger.$0.001 Base103 ms4 payers100% up
  23. 100agent402.tools/api/x402-market-pulseLive cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, default - whale-skewable), 'buyers' (distinct paying wallets - broadest adoption/reach), or 'calls' (raw volume). Every row carries all metrics plus callsPerBuyer (intensity), so revenue and actual ecosystem usage are both visible.$0.001 Base133 ms4 payers100% up
  24. 100agent402.tools/api/randomCryptographically secure randomness: N random bytes as hex, a uniform integer in a range, or a batch of up to 100 values in one call. Use it when an agent needs unpredictable values for nonces, sampling, shuffles or test data and cannot trust its own generator.$0.001 Base96 ms4 payers100% up
  25. 100agent402.tools/api/metaPage metadata ($0.002/call via x402 or MPP)$0.002 solana132 ms4 payers100% up
  26. 100agent402.tools/api/tx-statusCheck the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei/Arc/Robinhood Chain: success / failed / pending / not found, with block, from, to, gas used. Read-only.$0.001 Base95 ms4 payers100% up
  27. 100agent402.tools/api/weather-forecastMulti-period weather forecast for a US location from api.weather.gov (NWS, public domain). Give latitude and longitude; returns the place plus upcoming forecast periods (temp, wind, conditions). US coverage only.$0.001 Base135 ms4 payers100% up
  28. 100agent402.tools/api/dns-lookupResolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.$0.002 Base134 ms4 payers100% up
  29. 100agent402.tools/api/token-price-historyHistorical USD price series for a token, by ticker symbol (ETH, BTC, SOL, ...) or by ERC-20 contract + network, at 5-minute (up to 2 days), hourly (up to 30 days) or daily (up to 365 days) resolution. Returns the points plus first/last/high/low and the percent change over the window - the data behind 'how did this token move over the last N days' without a separate market-data subscription. 404 (not charged) when the token is not in the price feed.$0.004 Base173 ms4 payers100% up
  30. 100agent402.tools/api/coin-historyPrice, market cap and 24h volume of a coin on ONE past date (00:00 UTC snapshot), in every currency at once plus your chosen one called out. Pass `date` (YYYY-MM-DD) or `daysAgo` (1-365). The point-in-time sibling of crypto-history (which returns a series): use it to value a position as of a date, compute a since-date return, or check a tax-lot basis. Historical range on this plan is the past 365 days, enforced before the call. Cached in-process for 5 minutes. Data provided by CoinGecko.$0.005 Base145 ms4 payers100% up
  31. 100soren.com/v1/chain/erc20-balanceRead an ERC-20 balance with symbol, decimals and a formatted amount — one call, no ABI work, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.$0.003 Base105 ms4 payers100% up
  32. 100api.craigmbrown.com/v1/services/ops.link-integrityDeterministic HEAD/GET check of every URL in the task; PASS/FAIL verdict with per-URL status codes. Post-deploy verification SKU (RQ-BO-DELEGATE-02). | 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 Base234 ms4 payers100% up
  33. 100api.craigmbrown.com/v1/services/trust.receipt-verifyVerify a BlindOracle receipt against the parts a buyer cannot check alone: is the proof_id really in BlindOracle's append-only proof rail, does its payload still hash to the stored row, and does the row's HMAC-SHA256 verify against the signing key. Also recomputes content_... | 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 Base99 ms4 payers100% up
  34. 100heb-utils-x402.hebutils-api.workers.dev/base-nonceGet the transaction count (nonce) and pending nonce of any address on Base mainnet. Pass the address. Read-only live on-chain data, useful before sending a transaction.$0.001 Base185 ms4 payers100% up
  35. 100agent.pocket.network/v1/pump-checkWhat can go wrong with a memecoin now, on Solana, Base and Robinhood Chain: mint and freeze authority, Token-2022 hooks, owner powers, a simulated buy and sell for honeypots and taxes, LP burn, holders and early buyers. Each check is definitive or heuristic, unknown never counts as a pass, and a verdict comes with plain flags. POST /v1/check with 1 to 10 tokens. Not financial advice.$0.005 Base148 ms4 payers100% up
  36. 100orchard-data.letom1176.workers.dev/api/macroMacro dashboard in one call: 13w/5y/10y/30y Treasury yields, dollar index, gold, WTI crude, VIX. JSON.$0.01 Base47 ms4 payers100% up
  37. 100api.sitecheck-api.workers.dev/api/address/parseSplits a free-text postal address into house number, street, unit, postcode, city, district, region and country, with a normalised one-line form. The postcode is checked against the rule of the country (for 18 countries); a mismatch is left out and says so. Workers AI does the split, so check the parts. geocode=1 adds coordinates from OpenStreetMap Nominatim.$0.002 Base278 ms4 payers100% up
  38. 1001gateway.dev/v1/weather/globalUse when an agent needs the weather anywhere in the world. Input: lat and lon, or city (Paris or Paris,FR), optional hours (0-72, default 24), tz (IANA zone, default UTC or the city's). Output: JSON current temperature, symbol, wind, humidity, cloud, pressure; hourly series; daily min/max, precipitation, max wind, symbol for ~10 days. Data: MET Norway. Example: ?city=London,GB or ?lat=51.5072&lon=-0.1276$0.002 Base56 ms4 payers100% up
  39. 100nojunk-moderate.mick8511.workers.dev/safetyText Moderation safety: Safety classification of a message or conversation with Llama Guard 3: safe/unsafe plus the 14 hazard categories (violent crimes, hate, self-harm, sexual content, ...).$0.002 Base177 ms4 payers100% up
  40. 100api.youraitools.co/transcribe/v1/transcribeSpeech-to-text API (audio transcription) for AI agents. Send MP3, WAV, M4A or OGG/Opus (body, audio_url or base64, up to 30 min); get transcript, language, timestamped segments, optional SRT/VTT; task=translate gives English. $0.003 per audio minute, rounded up; the 402 quotes your file's exact total. Search intents: speech to text api, transcribe audio file, mp3 to text, wav to text, pay per minute transcription api, srt vtt subtitles, podcast transcription.$0.003 Base218 ms4 payers100% up
  41. 100api.webintel-api.workers.dev/api/security/cve-nvd-lookupOne CVE record from the NIST National Vulnerability Database: description, published and last-modified dates, NVD status, primary CVSS score and severity (v4.0, 3.1, 3.0 or 2.0, whichever NVD marks primary first), CWE weakness IDs and up to 5 reference URLs. It does not say whether the CVE is being exploited (use cisa-known-exploits or epss-exploit-score for that).$0.002 Base53 ms4 payers100% up
  42. 100chainhilt.ai/api/v1/bridge/executePrepare the selected bridge route as ordered unsigned transactions: an exact-amount ERC-20 approval when needed (after an approval to 0 for tokens like Ethereum USDT), then the bridge transaction. Pass the minTargetAmount and maxNativeFee the user accepted; if the fresh quote delivers less or charges more native fee, it returns 409 with quote { adapter, estimatedTargetAmount, minTargetAmount, nativeFee } and no actions. Send the actions before expiresAt.$0.01 Base92 ms4 payers100% up
  43. 100agents.crowdspark.me/v1/time/convertConvert time between timezones for scheduling meetings and coordinating deadlines across IANA time zones. DST-correct UTC offsets. time=ISO local time or 'now'.$0.001 Base144 ms4 payers100% up
  44. 100agents.crowdspark.me/v1/time/business-daysCalculate business days between two dates for SLAs, invoice due dates, shipping and legal deadlines. Counts working days, skipping weekends and national public holidays by country (ISO code).$0.001 Base34 ms4 payers100% up
  45. 100agents.crowdspark.me/v1/time/holidaysPublic holiday calendar and list for 100+ countries by year. For scheduling, payroll and delivery planning. Returns national holidays with dates and names. Source: Nager.Date API.$0.001 Base34 ms4 payers100% up
  46. 100api.fadeandco.workers.dev/api/dev/pinnacle-oddsPinnacle sportsbook prices (the sharpest market-making book) from its public guest API: upcoming matchups of a league with start time, home/away participants and the main full-game lines — moneyline (incl. draw), handicap/spread and total with American odds, team totals, betting cutoff and max stake. Find a league by name within a sport (soccer, basketball, football, hockey, baseball, tennis, mma) or pass Pinnacle's league ID.$0.002 Base46 ms4 payers100% up
  47. 100api.financialdatasets.ai/financial-metrics/snapshotReal-time financial metrics snapshot for a company by ticker or CIK at today's price: market cap, enterprise value, valuation ratios, margins, returns, liquidity, leverage, growth and per-share figures. Use when an agent needs current valuation ratios for one company, not history. Non-Professional use; Professional use needs a plan at financialdatasets.ai.$0.02 Base246 ms4 payers100% up
  48. 100social.duoleads.com/v1/social/mentionsSocial Mentions & Sentiment: daily mention counts, distinct authors and mean VADER sentiment for a brand, product or topic over the last 1-7 days, plus the top 10 co-occurring terms. Sources: Bluesky and Hacker News, plus Reddit and X (latest, newest first) when available. One page per source: days beyond its reach come back truncated (coverage_from). Aggregate only, no text, no authors; a day under 20 known authors is suppressed. Bad input is free; not found or no match is not charged.$0.01 Base121 ms4 payers100% up
  49. 100priceplain.onrender.com/v1/extractTableGrab: give a public URL and get clean, typed JSON tables (headers, row objects, inferred column types, caption/heading context; colspan/rowspan handled; ISO dates and real numbers) or the page's main content as Markdown with title, byline, date and links. Handles HTML, CSV, XLSX and text PDFs. SSRF-safe, no JS rendering (returns js_required). $0.01 per call. Feedback/support: POST /feedback (free) or js4336638@gmail.com.$0.01 Base192 ms4 payers100% up
  50. 100pool.linkrra.com/api/billing/x402/models/gemma-4-26b-a4b-it/chat/completionsSynap by Linkrra · Google Gemma 4 26B A4B Instruct — fast general model, long context. OpenAI-compatible inference: 32K context, dedicated GPUs we operate, 4-bit AWQ. Pay per call in USDC on any network offered in the payment challenge; no account, no API key. From $0.001 per call. Streaming supported.$0.001 Base190 ms4 payers100% up
  51. 100api.webintel-api.workers.dev/api/security/open-port-scannerLists the TCP ports Shodan has seen open on an IPv4 address, from its pre-collected passive scan data (not a live scan: nothing connects to the address now). The record can be days old, and an address with no record returns known=false, which does not prove the ports are closed.$0.002 Base87 ms4 payers100% up
  52. 100api.youraitools.co/stackdetect/v1/detectSame as GET, POST {"url": "..."}$0.003 Base250 ms4 payers100% up
  53. 100scraplingdata.xyz/v1/token/holdersSolana token holder concentration: computed from raw Solana RPC - top-10 holder share of supply, largest holder share, which top holders are labelled exchange wallets, non-exchange concentration and a low / medium / high concentration verdict with reasons, plus the top 20 holder wallets. Solana SPL tokens only (pass the mint as address); EVM chains are not supported yet. Cached 10 min; no charge on RPC failure or unknown mint$0.001 Base190 ms4 payers100% up
  54. 100api.vextorium.com/v1/sec-company-profileOfficial profile of a US listed company from the SEC: name, CIK, industry (SIC), state of incorporation, fiscal year end, address, phone, tickers and exchanges, former names and latest filing.$0.003 Solana227 ms4 payers100% up
  55. 100api.fastaf.co/x402/v1/ebayeBay product search and item data API for AI agents. eBay search or item URLs return JSON listings or product details with titles, prices, condition, shipping and links when available. Supports marketplace research and price comparison. Provided by FastAF eBay Listings & Item Data. Price: $0.005000 USDC per successful call. Docs: https://fastaf.co$0.005 Base274 ms4 payers100% up
  56. 100br-intelligence.brverify-api.workers.dev/v1/validateBrazil document validation: CPF, CNPJ (including the new alphanumeric CNPJ), EAN-13 barcode, NF-e access key and Brazilian phone numbers.$0.005 Base124 ms4 payers100% up
  57. 100api.chainmarket-api.workers.dev/api/dev/morningstarMorningstar quote page data for a US stock, ETF or mutual fund: name, ticker, Morningstar star rating, key statistics shown free on the page (stocks: previous close, day and 52-week range, bid/ask, market cap, P/E, P/S, dividend yield, sector, industry, style box, employees), top-10 holdings with weight, market value and sector plus portfolio date (ETFs/funds), and the analyst report headline. Subscriber-only values are omitted.$0.002 Base45 ms4 payers100% up
  58. 100agentsvc.io/api/v1/proxy/service-finderFind the right paid API for a task across the whole x402 market, not only agentsvc.io: describe what your agent needs in plain words ("convert a web page to markdown", "token price on Solana", "transcribe audio") and get the best matching x402 endpoints from about 45,000 listed ones, each with provider, URL, method, price in USD, payment networks, an input hint, and whether it answered our own check with a valid 402 (reachable, checked_at, response time).$0.005 Base140 ms4 payers100% up
  59. 100api.vextorium.com/v1/country-rankingsWorld ranking of countries by a World Bank indicator (GDP, GDP per capita, growth, inflation, population, unemployment, public debt, life expectancy, CO2 per capita, renewables, FDI...), latest value of each country from the last 5 years.$0.004 Base295 ms4 payers100% up
  60. 100scraplingdata.xyz/v1/whales/movesWhale moves: every large taker order (default >= $100k) on Hyperliquid perps (top 40 markets by volume: BTC, ETH, SOL, HYPE...) in the last window, newest first, with side, USD size, avg price, taker address and explorer link, plus net whale buy/sell per coin (accumulating/distributing). Params min_usd (>=25000, default 100000), window (15m|1h|4h|24h|7d, default 1h), coin, side (buy|sell), limit. Captured live from the public Hyperliquid trade stream; built for polling$0.005 Base248 ms4 payers100% up
  61. 100api.healthtravel-api.workers.dev/api/travel/nhtsa-vpic-vehicle-decoderDecodes a VIN with NHTSA vPIC: make, manufacturer, model, model year, trim, vehicle type, plant city/state/country and the check-digit message. Only fields NHTSA has for that VIN are returned; no recall or history data.$0.002 Base138 ms4 payers100% up
  62. 100api.healthtravel-api.workers.dev/api/health/osha-occupational-healthOSHA Permissible Exposure Limits (Table Z-1, 29 CFR 1910.1000, read from eCFR): chemical name, CAS number, 8-hour TWA in ppm and mg/m3, and notes such as ceiling or see-other-section. Matches by name words. Up to 20 chemicals per call; not the full OSHA chemical database.$0.002 Base74 ms4 payers100% up
  63. 100api.healthtravel-api.workers.dev/api/health/clinical-pharmacogeneticsCPIC pharmacogenetics guidelines (api.cpicpgx.org) for a gene symbol: guideline name, genes covered, guideline version, and ClinPGx link. Lists guidelines only; recommendation text is not included. Up to 20 guidelines per call.$0.002 Base112 ms4 payers100% up
  64. 100api.healthtravel-api.workers.dev/api/health/orphanet-rare-diseasesOrphanet rare disease by ORPHAcode (Orphadata open data, CC BY 4.0): preferred name, synonyms, disorder group and typology, and associated genes with association type. Prevalence is not included. Up to 20 genes per call.$0.002 Base62 ms4 payers100% up
  65. 100api.healthtravel-api.workers.dev/api/health/kegg-pathway-genesKEGG human pathway (KEGG REST, flat file): pathway name, class, description and the genes in it (KEGG gene ID, symbol and description). Give a human pathway number such as 05200. Up to 100 genes per call.$0.002 Base80 ms4 payers100% up
  66. 100api.healthtravel-api.workers.dev/api/health/pubchem-chemical-cidNIH PubChem compound lookup by name (PUG REST): PubChem CID, title, molecular formula, molecular weight and IUPAC name for the best match. Safety and hazard data are not included. One compound per call.$0.002 Base32 ms4 payers100% up
  67. 100api.healthtravel-api.workers.dev/api/health/ema-human-medicinesEuropean Medicines Agency (EMA) centrally authorised human medicines (EMA bulk JSON, updated twice a day): name, EMA product number, status, active substance, ATC code, therapeutic indication, first authorisation date and holder. Searches name or active substance. Up to 20 per call.$0.002 Base51 ms4 payers100% up
  68. 100api.healthtravel-api.workers.dev/api/health/dea-controlled-substancesDEA controlled substance schedules (21 CFR 1308.11-1308.15, via eCFR): substance name and DEA Controlled Substances Code Number for schedule I to V table entries matching a name. Substances listed only in paragraphs are not searched. Does not include registration status. Up to 20 matches per call.$0.002 Base51 ms4 payers100% up
  69. 100api.healthtravel-api.workers.dev/api/health/fda-adverse-events-faersFDA FAERS drug adverse event reports (openFDA) for a generic drug name: report ID, receive date, seriousness, patient age and sex, drugs and reported reactions. Spontaneous reports only; a report does not prove the drug caused the reaction. Up to 10 reports per call.$0.002 Base51 ms4 payers100% up
  70. 100api.healthtravel-api.workers.dev/api/health/daily-med-label-splNLM DailyMed drug label listings (structured product labeling) matching a drug name: title with labeler, set ID, label version, published date and total match count. Lists labels only; label section text is not included. Up to 10 labels per call.$0.002 Base66 ms4 payers100% up
  71. 100api.healthtravel-api.workers.dev/api/health/fda-recalls-enforcementFDA drug recall enforcement reports (openFDA) matching a product word: recall number, class I/II/III, status, recalling firm, reason, product description and dates. Drug recalls only, not food or cosmetics. Up to 10 per call.$0.002 Base53 ms4 payers100% up
  72. 100api.healthtravel-api.workers.dev/api/health/nih-reporter-grantsNIH RePORTER funded research projects matching a text search (NIH RePORTER API v2): project number, title, fiscal year, award amount, lead organization and principal investigators. Up to 20 projects per call, most relevant first.$0.002 Base109 ms4 payers100% up
  73. 100api.healthtravel-api.workers.dev/api/health/fda-orange-bookFDA Drugs@FDA approved applications (openFDA) by active ingredient: application number, sponsor, brand names, dosage form, marketing status and Orange Book therapeutic equivalence (TE) code. Up to 10 applications per call.$0.002 Base49 ms4 payers100% up
  74. 100api.healthtravel-api.workers.dev/api/health/medicare-inpatient-drgCMS Medicare inpatient hospital averages per MS-DRG (data.cms.gov, fee-for-service Part A): hospital name, state, DRG code and description, discharges, average submitted charge, average total payment and average Medicare payment. Hospital-level averages, not the IPPS national rate table. Filter by 3-digit DRG code and optional state; up to 20 rows.$0.002 Base36 ms4 payers100% up
  75. 100api.healthtravel-api.workers.dev/api/health/loinc-laboratory-codesRegenstrief LOINC laboratory and clinical test codes (via NLM Clinical Tables): LOINC number and long common name matching a term, with total match count. Codes and names only, no units or reference ranges. Up to 20 per call.$0.002 Base54 ms4 payers100% up
  76. 100api.healthtravel-api.workers.dev/api/health/icd10-cm-diagnosisICD-10-CM diagnosis code search (NLM Clinical Tables, CDC code set): matching codes and their official names, with the total match count. Codes and names only; no cross-walks or clinical descriptions. Up to 20 codes per call.$0.002 Base35 ms4 payers100% up
  77. 100api.healthtravel-api.workers.dev/api/health/mesh-biomedical-thesaurusNLM MeSH (Medical Subject Headings) descriptor for an exact heading: MeSH ID, label, entry terms (synonyms) and allowable subheadings (qualifiers). Exact match only; no scope notes (the public lookup API does not return them).$0.002 Base39 ms4 payers100% up
  78. 100api.healthtravel-api.workers.dev/api/health/npi-provider-registryCMS NPPES NPI Registry search: NPI number, name, credential, status, taxonomy (specialty code and description) and practice location. Matches can be fuzzy; the registry decides the match. Up to 10 records per call.$0.002 Base38 ms4 payers100% up
  79. 100api.healthtravel-api.workers.dev/api/health/pubmed-abstractsPubMed search (NCBI E-utilities): matching articles with PMID, title, authors, journal, publication date and DOI. Citation metadata only, no abstract text. Up to 20 results.$0.002 Base42 ms4 payers100% up
  80. 100api.healthtravel-api.workers.dev/api/health/usps-prescription-shipUS rules for mailing prescription drugs from the official texts, section by section with citations: USPS Publication 52 section 453 (definitions, mailer responsibility, what may be mailed, packaging and marking) and DEA 21 CFR Part 1306 (who may prescribe and fill, Schedule II-V refills, labeling, online pharmacies, telemedicine). Filter by source or words in the text.$0.002 Base35 ms4 payers100% up
  81. 100x402-agent-tools.nerolabs.workers.dev/data/diffCompares an old and a new list of JSON rows by a key field and returns what was added, removed and changed, with the old and new value of every changed field. Use it to spot new leads, price changes or deleted items between two scrapes. Up to 500 rows a side. $0.001 per new row sent (old rows free), $0.002 minimum. Same engine as nerolabs/dataset-diff-detector.$0.002 Base66 ms4 payers100% up
  82. 100us-regulations.use.x402atlas.com/public-inspectionUS federal regulations in the pipeline — documents on public inspection at the Federal Register, filed by agencies and scheduled to publish, with type, agencies, filing time and the scheduled date. Use to see tomorrow's rules, notices and executive orders before they are published.$0.01 Base245 ms4 payers100% up
  83. 100nojunk-qr.mick8511.workers.dev/qrQR Code Generator qr: Encode one text as a QR Code (ISO/IEC 18004, versions 1-40, ECC L/M/Q/H) and return it as SVG, PNG or a JSON matrix.$0.001 Base245 ms4 payers100% up
  84. 100agent-tools.jbarkules.workers.dev/v1/web/metaLink preview and unfurl data: title, description, Open Graph image, site name, canonical URL, favicon and final URL after redirects.$0.001 Base288 ms4 payers100% up
  85. 100api.healthtravel-api.workers.dev/api/travel/google-hotels-priceLowest nightly hotel prices for a city and stay dates from Google Hotels' public results page (about 18-20 hotels, Google's order): hotel name, 'prices starting from' amount, currency as Google shows it (it follows the server's region, so check the currency field) and Google's deal flag with % below usual. Confirms the dates Google applied. Not a booking; prices change constantly.$0.002 Base50 ms4 payers100% up
  86. 100api.healthtravel-api.workers.dev/api/health/fda-purple-bookFDA Purple Book licensed biological products matching a name (brand or proper name, e.g. adalimumab): applicant, BLA number, license type (351(a) originator, 351(k) biosimilar or interchangeable), strength, dosage form, route, marketing status, approval date, reference product and exclusivity expiry dates, plus the products newly approved or updated this month. From FDA's monthly Purple Book data download.$0.002 Base44 ms4 payers100% up
  87. 100api.healthtravel-api.workers.dev/api/health/clinical-trials-govClinicalTrials.gov study search (API v2): NCT ID, title, status, phase, start and completion dates, sponsor, conditions, interventions, enrollment and primary outcome. Up to 10 studies per call.$0.002 Base59 ms4 payers100% up
  88. 100api.healthtravel-api.workers.dev/api/travel/data-wa-gov-electric-vehicleWashington State Department of Licensing registered electric vehicles (BEV and plug-in hybrid): make, model, model year, EV type, electric range, city, county and ZIP. Vehicles are registrations, not current status; the range field is 0 where not yet researched.$0.002 Base34 ms4 payers100% up
  89. 100api.healthtravel-api.workers.dev/api/travel/autotraderVehicle listings from AutoTrader.ca (Canada; the US and UK AutoTrader sites block datacenter traffic): up to 20 per page with title, year, make, model, trim, price in CAD, AutoTrader's price label, mileage in km, transmission, fuel, new/used, dealer, city, province and URL, plus the total matching count and min/median/max price of the page. Filter by make, model, province and city.$0.002 Base45 ms4 payers100% up
  90. 100x402-data-api.sigrunner.workers.dev/chain/total-supplyERC-20 total supply on Base, raw + formatted.$0.002 Base62 ms4 payers100% up
  91. 100api.healthtravel-api.workers.dev/api/travel/korn-ferry-tour-leaderboardKorn Ferry Tour leaderboard for the current or most recent tournament (or the event on a given date): tournament name, dates and status, then each player's place, name, country, score to par, round scores and total strokes, from ESPN's public golf scoreboard feed.$0.002 Base40 ms4 payers100% up
  92. 100api.healthtravel-api.workers.dev/api/travel/amtrak-train-trackerLive Amtrak train status from Amtrak's Track Your Train map feed: train number, route, origin/destination, state (Predeparture/Active/Completed), current GPS position, speed (mph), heading, last update, and every stop with scheduled and estimated/actual arrival and departure plus on-time/late comments. Filter by train number, route name or station code.$0.002 Base40 ms4 payers100% up
  93. 100api.healthtravel-api.workers.dev/api/travel/aviationweather-metar-tafCurrent airport weather from NOAA Aviation Weather Center: latest METAR (observed temperature, dewpoint, wind, visibility, altimeter, flight category) and the TAF forecast text for a 4-letter ICAO airport code. Raw text is included alongside the parsed fields.$0.002 Base35 ms4 payers100% up
  94. 100api.youraitools.co/fx/v1/historyHistorical exchange rate API for AI agents. Daily ECB reference rates for one currency pair between two dates (up to 366 days, back to 1999), with first, last, min, max and percent change. Search intents: historical exchange rates api, fx time series, currency history, eur usd chart data, forex history.$0.002 Base237 ms4 payers100% up
  95. 100quickbuild.quynguyenbac.workers.dev/api/base/tokenInspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), whether it is a well-known Base token (guards against spoofed symbols), and optionally the balance of `holder`. Read live from public Base RPC; metadata cached 1 h. All params optional: defaults to USDC on Base. Invalid input = 400, never...$0.002 Base52 ms4 payers100% up
  96. 100x402-data-api.sigrunner.workers.dev/chain/nonceTransaction count (nonce) for a Base address, latest and pending. Use when an agent needs the next nonce for a Base address before signing a transaction.$0.002 Base47 ms4 payers100% up
  97. 100quickbuild.quynguyenbac.workers.dev/api/crypto/priceLive crypto prices for up to 25 coins per call: pass tickers in `symbols` (BTC,ETH,SOL,AERO,...; common tickers built in, others resolved by CoinGecko search to the largest coin with that ticker), CoinGecko `ids`, or one token `address` + `chain` (base default; ethereum, arbitrum, optimism, polygon, bsc, avalanche, solana). Returns price, market cap, 24h volume and 24h % change in each `vs` currency (usd default; up to 5, e.g. usd,eur,btc) plus last-updated time. Data: CoinGecko public API,...$0.001 Base47 ms4 payers100% up
  98. 100grokzilla.shop/api/skills/gas-priceEIP-1559 base fee and priority fee percentiles (p25/p50/p90) for Base and/or Ethereum via eth_feeHistory. Cached 10s. Optional eth-transfer USD estimate on Base.$0.001 Base228 ms4 payers100% up
  99. 100agent-tools.jbarkules.workers.dev/v1/domain/lookupDomain intelligence for due diligence, phishing checks and lead research: registrar, creation and expiry dates (RDAP/WHOIS), A/AAAA/MX/NS/TXT records, SPF, DMARC and HTTPS reachability in one call.$0.003 Base286 ms4 payers100% up
  100. 100derivs.duoleads.com/v1/liquidationsLiquidations of one coin's perpetual futures: recent forced liquidations from the Gate, Bitfinex, dYdX, Deribit and OKX public feeds, long and short liquidations in USD per venue, the totals and the largest events over 1-24h. Liquidation data for BTC, ETH, SOL and more; Bybit, Hyperliquid and Kraken are listed as not covered (WebSocket only). Data only. Bad input is free; under 2 feeds not charged.$0.003 Base53 ms4 payers100% up