Explore APIs

Clinical trial search — find ClinicalTrials.gov studies by free text, condition, intervention, sponsor, recruitment status and phase, and get each study's NCT id, titles, status, phases, conditions, interventions, sponsor, start and completion dates, enrollment and whether results are posted. Use for drug development, medical research and patient-recruitment questions.

NIH-funded project search — find grants by words in the title, abstract or research terms, filtered by fiscal year, NIH institute, organisation, state, activity code, SBIR/STTR mechanism or award size, with the fiscal-year award amount, investigators, organisation and dates for each. Use to see who NIH funds on a topic, how much, and which small companies.

Twitter (X) video & image downloader — pass a public tweet / X post URL, get direct CDN media links: .mp4 video URLs with thumbnails plus every image in the post, ready to stream, embed, re-host, or download. No scraping or browser automation.

Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap, a testnet address dressed as mainnet, or a listing whose price no longer matches its challenge. Returns a verdict — live, degraded, trap, testnet or dead — a 0-100 risk score, and the specific findings behind both, so an agent can decline a bad endpoint instead of learning about it by lo

Fetch a URL and extract structured metadata from its HTML: title, description, canonical URL, language, favicon URL, RSS/Atom feed links, Open Graph tags (og:title, og:image, og:type, og:description, og:url), Twitter Card tags, and other meta tags (author, keywords, robots). Use this to get Open Graph data, preview cards, or site information without parsing HTML yourself. Send {"url": "https://...

falcon.sol: Use this when you need to size debt or compare credit risk across US public companies. Send up to 12 tickers; get gross and net leverage, interest coverage, FCF/debt, debt capacity under leverage, coverage and DSCR limits, capacity at peer-median leverage, 3 structures with indicative ratings, and a short credit memo. Every assumption is returned and overridable. $0.24 USDC.

Product recalls (US): is a product, brand, food, drug, medical device or vehicle (make, model, year) under an active FDA, NHTSA or CPSC recall? Severity on one scale, hazard, remedy and lot codes. RecallScout

Give this API a loan amount, an interest rate, and a repayment term, and it returns the exact monthly payment plus a full month-by-month schedule: interest paid, principal repaid, and balance remaining for every payment. Ask what an extra $300 a month, or a $10,000 lump sum in month 24, would do and it reports the months and interest saved. Every figure uses banker's rounding at pinned precision,

Every agent and developer hits broken or confusing JSON. This tool handles the common headaches in one place: check whether JSON is valid with the exact error location, repair near-JSON with typos, pretty-print or minify, pull values out with a path expression, diff two documents, convert to and from YAML or CSV, produce a byte-stable canonical form for hashing, validate against a schema, and repo

This tool reads live information from Hacker News, a popular website where people share and discuss technology news. You can either ask for a current list of stories (like the Top, New, Best, Ask, Show, or Job lists) or ask for every story, job posting, and poll that was posted on one specific calendar day in the past. You can also choose to pull in the discussion comments underneath each story, i

Look up an ENS name or an Ethereum address and get back the matching one, automatically figuring out which direction you need.

Sends a real request to any URL you provide, attaches an Origin header, and reads back all six standard cross-origin permission headers the server returns. Tells you whether cross-origin requests are enabled at all, whether your specific origin is permitted, and shows every permission value exactly as the server sent it. Useful for finding why a browser is blocking a request, confirming a new depl

Checks one or more domains to see whether they are set up to show a brand logo next to emails in Gmail, Apple Mail, and Yahoo. It looks up the BIMI settings the domain has published, checks the logo file follows the required format, checks any logo certificate is valid and unexpired, and confirms the domain has strict enough email protection turned on. Returns a clear pass or fail per domain, plus

Given 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.

Live gas prices per chain — Base, Ethereum, and Solana from public RPCs, with speed tiers where derivable, plus a cheapest-chain recommendation. Toll: $0.005 USDC on Base or Solana.

Get current exchange rate between two currencies using ECB data. Supports all major currencies. Returns rate, inverse rate, and date.

Paint one pixel on 21millionpixels.art, a shared 21,000,000-pixel canvas. Reads are free; paid pixels skip the human cooldown.

US overnight interest rates — latest SOFR and effective federal funds rate (EFFR), transaction volumes and policy target bounds. Compare secured and unsecured dollar funding costs and track monetary policy. x402Atlas is not affiliated with the New York Fed. The New York Fed does not sanction, endorse, or recommend any products or services offered by x402Atlas.

Convert and compress images to WebP, AVIF, JPEG or PNG. Optimize and shrink photos for web and CDN delivery from any image URL.

falcon.sol: Full document extraction (all pages) for invoices, receipts, POs, W-9s and generic PDFs. $0.03 USDC.

Use when an agent is about to crawl, train on or ingest a website into RAG: checks the domain's AI consent and licensing signals (robots.txt per AI bot, RSL license, IETF AIPREF, TDMRep, noai meta tags, llms.txt, C2PA), returns a 0-100 score and a training stance, and a signed EAS receipt anchored on Base proving what was checked and when. Errors: 400 invalid domain; 502 site unreachable (not char

US Treasury interest rates — latest monthly average rates on outstanding government debt, including Treasury bills, notes, bonds, TIPS, floating-rate notes and savings securities. Track federal borrowing costs and compare rates across security classes.

Cheap BTC/ETH/SOL/HYPE USD spots + 24h change from CoinGecko, with summary. Use /v1/pulse when you also need Fear & Greed, funding, or DeFi (one call replaces four).

The 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. List your own x402 service on bazaar.agentexchange.work/listings: 1 USD, 30 days, live at once, no account.

Checks whether a URL/domain is safe to fetch, cite, or follow: flags phantom-squatted or typosquatted brand domains, unregistered or brand-new domains, and known malicious infrastructure (URLhaus). Returns an ALLOW/WARN/BLOCK verdict before your agent trusts the link.

Get a client token for direct upload to Vercel Blob

SEC company financials by ticker — normalized annual and quarterly revenue, income, balance-sheet, cash-flow and EPS facts.

Search Aggregator fast tier (GET): Serper web search via URL query params ?query=...&max_results=... , fixed price $0.01 USDC. query is required. Mode is fixed by the path.

Global law search across JP/US/UK/EU legislation databases (e-Gov, eCFR, legislation.gov.uk, EUR-Lex). Structured JSON results with statute references.

Exa Search - Neural search across the web