the402 x402 endpoint directory

Live perp funding rates, open interest, and mark/oracle/mid prices across 200+ Hyperliquid perpetuals (free/keyless).

Insert, delete, replace, extract, locate or measure at exact character offsets, counting by grapheme, code point or UT

Follows a shortened link through its redirect chain and returns the final destination with click-tracking parameters r

Official UK company registry (Companies House). Two modes: pass query to search companies by name (returns company num

Top cryptocurrencies by market cap with live price, market cap, 24h volume, and 24h + 7d % change. Pass limit (1–100,

DeFi yield & lending rates across protocols (via DefiLlama, free/keyless). Returns pools ranked by APY or TVL with bas

One call returning both the National Weather Service forecast periods and any active watches, warnings and advisories

Locus public pay-per-use API

Active National Weather Service watches, warnings and advisories covering a US latitude and longitude.

URL status checker, HTTP status code, website uptime monitor, endpoint health probe, dead link detector, redirect chai

Finds current FDA Structured Product Labels by drug name, NDC or labeler, returning each label SET ID, title, version

The NPPES record for a healthcare provider or organization: name, credential, taxonomy specialties with state licence

The FIRST.org EPSS probability and percentile for one or more CVEs: the modelled chance each is exploited in the next

Looks up a NAICS industry code and its parent hierarchy, or searches NAICS industry titles by text.

Verifies an ICD-10-CM diagnosis code or searches the code set by text, returning official code descriptions.

Commercial airports within a radius of a coordinate, sorted by distance, with IATA and ICAO codes, city and bearing.

Searches PubMed and returns citation metadata for each hit: title, journal, publication date, authors, DOI and PMID.

The full GitHub Advisory Database record for a GHSA or CVE id: severity, CVSS, EPSS, CWEs, and the affected package an

Earthquakes from the USGS catalog within a radius and time window of a point, with magnitude, depth, distance and time

Earthquakes above a magnitude threshold in the last N hours, worldwide or within a radius of a point, newest first.

Estimate the gas a transaction will consume via eth_estimateGas before signing it

X User Profile ($0.004/call): Fetch an X (Twitter) account by handle: display name, bio, follower/following/tweet coun

Stablecoin Peg Monitor ($0.004/call): Live peg-and-supply snapshot for any stablecoin by symbol (USDC, USDT, DAI, ...)

Email verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection

Settlement Attestation. A signed JSON observation of one transaction on Base, Polygon, or Solana — the identifier's sh

Returns Hacker News and Reddit attention trends.

CPG product data + shop prices by barcode or name. Open Food Facts + Open Prices. Ed25519 attested.

Use when an agent needs crypto price. Returns Real-time cryptocurrency price data. $0.004.

Returns current weather observations, METAR, for an airport.

Returns current weather observations, METAR, for an airport.

Query the CDP x402 Bazaar discovery API, normalize paid resources, surface resource URL, service name, tags, scheme, n

Search CoinCap assets by name or symbol (agent-optimized).

Reloadpi — List all countries where digital vouchers and gift cards are available

ERC-20 token profile on any major EVM chain: on-chain metadata (name, symbol, decimals, total supply) read straight fr

Crypto and financial news search. Returns current headlines about cryptocurrencies, tokens, markets and finance with s

Resolve a GTIN/EAN prefix to its GS1 Member Organisation (not country of origin).

Use when an agent needs keyword extract. Returns Ranked keyword and named-entity extraction from text, returned as cle

JSON to TOML. POST a JSON object; the response is a TOML document. The root must be an object, because TOML's root is

TOML to JSON. POST a TOML document; the response is pretty-printed JSON. A conforming parser handles the parts hand-ro

Markdown to a JSON token tree. POST Markdown; the response is {"toc": [{depth, text}], "tokens": [...]} — the marked l

Markdown frontmatter to JSON. POST a Markdown file that begins with a --- fence; the response is {"data": the parsed Y

Markdown to HTML conversion

Run ONE named check against a response you paste

Berechnet Entfernung und Fahrzeit zwischen bis zu 25 Punkten, wahlweise als volle Matrix oder als Start-Ziel-Kreuz. Ni

NFT metadata for ERC-721 and ERC-1155 tokens on Base, Polygon, Arbitrum, Optimism and Ethereum. Resolves tokenURI thro

NFT metadata for ERC-721 and ERC-1155 tokens on Base, Polygon, Arbitrum, Optimism and Ethereum. Resolves tokenURI thro

Use when an agent needs bazaar delta. Returns x402 Bazaar day-over-day catalogue diff between the two latest daily ful

Use when an agent needs base usdc transfer check. Returns Verify a Base mainnet transaction moved USDC: decodes all US

CPG product data + shop prices by barcode or name. Open Food Facts + Open Prices. Ed25519 attested.

Fetch current USD price, market capitalization, 24-hour trading volume, 24-hour percentage change, and source update t