the402 x402 endpoint directory

FDA medical device recall and enforcement reports filtered by product, firm, recall class, state, status or report dat

Every active National Weather Service watch, warning and advisory for a whole US state, territory, marine area or fore

Foods in USDA FoodData Central matching a name, each with its FDC id, serving size and calories, protein, fat and carb

Federal disaster declarations for a state, with incident type, declaration date, designated county and which assistanc

Most recent SEC filings for a US registrant by ticker or CIK, with form type, dates, item numbers and document URLs.

URL Metadata Extract: URL title, description, Open Graph image and canonical metadata Executed deterministically by th

URL Metadata Extract: URL title, description, Open Graph image and canonical metadata Executed deterministically by th

The therapeutic, pharmacologic, mechanism-of-action, ATC and VA classes a drug or ingredient belongs to, from NLM RxCl

Vulnerabilities added to CISA’s Known Exploited Vulnerabilities catalog within a recent lookback window, newest first.

Search registered clinical trials by condition, intervention, sponsor or free text, filtered by recruitment status and

Name, biography, employments and educations for an ORCID iD, with an optional capped list of the most recent publicati

Infers a JSON Schema 2020-12 document from sample records: unified types, required keys, array item types and string f

Answers 402 via GET. Speaks the v2 dialect over the PAYMENT-REQUIRED header, charges $0.005 on base.

ERC20 Transfer logs via eth_getLogs - raw Transfer events for a token or wallet

Query Ethereum contract event logs via eth_getLogs - filter by contract, topic, and block range

Simulate a read-only Ethereum contract call via eth_call - no transaction sent

Read a raw storage slot from any Ethereum contract via eth_getStorageAt

Search X/Twitter for any query and get the actual matching tweets — keyword, $CASHTAG, from:handle (a user timeline),

Get real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. 62-88% tighter

Resolves an ENS name into its addresses, text records, and content hash, with batch support up to 50 names and per-nam

Get real-time Best Bid/Ask for ALL available FX pairs in a single call. Multi-source aggregated from multiple institut

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with

Trust score (0-100, grade A-F) for any x402 endpoint -- listed in our catalog or not. Unlike uptime-only checkers, we

WHOIS domain lookup — raw registry text with registrar, nameservers, lifecycle dates and status, plus the responding s

Crypto token price in USD, EUR and more — real-time spot prices for one or many coins by CoinGecko id (bitcoin, ethere

Current x402 ecosystem composition: services per category (Agentic.Market taxonomy: Data, Inference, Search, Infra, Me

Twitter (X) video & image downloader — pass a public tweet / X post URL, get direct CDN media links: .mp4 video URLs w

The catalog of Hyperliquid prediction-market outcomes and their metadata.

X Tweet Search ($0.005/call): Search X (Twitter) posts with full advanced-search syntax (from:, since:, until:, exact

List all available FX symbols with their current quality state and source count. AI agent API for discovering availabl

Unforgeable operating history for any AI agent attesting through Rubric Protocol: record count, first-seen date, conti

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Live mempool fee-pres

Pay once to receive a short-lived WebSocket ticket for the live Bitcoin mempool stream.

A Small Blessing. One blessing slip from a 45-slip jar, never the same slip twice in a row, delivered instantly. Full

Top crypto coins ranked by market cap — paginated market data (price, market-cap rank, symbol) in any currency, CoinGe

Returns recently detected malicious addresses on Base.

Holiday date check by country or subdivision — determine whether one ISO date is an official public holiday.

OnRamperX is a non-custodial value router for agents and humans: fiat<->crypto and cross-chain via one quote interface

Find nearby supported lab collection locations or official locator handoffs.

Wikipedia article summary — plain-text and HTML extract, short description, thumbnail and Wikidata id for any title, i

The Hyperliquid perpetuals universe — tradeable symbols with max leverage and size decimals, without live context.

NWS weather forecasts for 5 US cities (NYC, LA, Chicago, Houston, Miami)

Returns recent analyst desk posts as a stream.

Searches X with filters or raw advanced search syntax.

Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and sig

Add business days while skipping weekends and full-day Public or Bank holidays; Optional and HalfDay observances are r

GLEIF LEI lookup for AI agents — Legal Entity Identifier search by LEI code, legal name, or domain. Keyless Global LEI

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with

Twenty-Four answer check — verifies a 24-game arithmetic expression with exact rational math against the deterministic

DNS MX record lookup — a domain's mail servers with their hostnames and priorities as structured JSON, for email routi