the402 x402 endpoint directory

Official DPE energy certificates for existing French dwellings from the ADEME dpe03existant dataset (Licence Ouverte 2

Official French company registry search via recherche-entreprises.api.gouv.fr (INSEE Sirene data, updated daily). Quer

Killip and Kimball 1967 myocardial-infarction heart-failure class 1-4 as assigned by the caller. Returns the published

PaO2/FiO2 ratio as arterial PO2 in mm Hg divided by inspired oxygen as a fraction (0.21–1.0). Returns the ratio rounde

Currency exchange rates — Reference FX rates (ECB) with optional amount conversion.

KYB / KYC verification of a Japanese company: reconcile a company name (+ optional address) against the official JP co

Look up a Twitter/X user profile by their screen name. Returns full profile data including id, name, username, bio, fo

Moderate text content using Claude Haiku — flags categories like harassment, hate, sexual content, violence, self-harm

OpenAI-compatible text embeddings API (alias of /v1/embeddings for api/v1-style base URLs) — input as a string or batc

OpenAI-compatible text embeddings API — standard /v1/embeddings request shape: input as a string or a batch of up to 1

Live prediction-market odds from Polymarket — list the top active markets by volume, or search by keyword. Each result

Expressive text-to-speech in any of 20 voices: 10 standard (M1-M5, F1-F5) plus 10 personas (Storyteller, Narrator, Ann

Acker 2015 SIPA: heart rate in bpm divided by cuff systolic pressure in mm Hg, rounded to two decimals. Elevated if th

Pay-per-call: Signal Sprint Base USDC Balance

Keyless off-chain company enrichment vectors

Risk check for an EVM contract/token address

Live feed of every active rail disruption across the Japanese (JP) network in one call — delays and suspensions with b

Wikipedia summary — Lead summary/extract for a Wikipedia page.

Atomic canonical resolution for the registered Robbie George Biography Plate™ identifier.

Embeds 1 to 100 strings into semantic vectors via Venice. Tier shorthand: 'default' → gemini-embedding-2-preview (newe

WHOIS API and RDAP domain lookup for agents. Returns registration date, domain age, expiration date, registrar, contac

LLM cost scout: send your monthly OpenAI API spend in USD and get back the flat ChatGPT/Codex subscription tier that a

Batch text-to-speech: synthesize up to 20 text items in a single call, standard voices only, for 501-2000 total charac

Get real-time stock quote with price, change, volume, and market cap

MCPFax markets — Stablecoin peg deviation (stablecoin). Price: $0.001 USDC per call on Base.

Clean page text for up to 3 URLs in one call via Exa's index + live crawl — works on JS-rendered and bot-walled pages

Decode and inspect any JWT token — extracts header algorithm, payload claims, expiry status, issued-at time, audience,

Look up public holidays for any country and year, check whether a specific date is a holiday, and calculate the next b

Turn event fields into a valid RFC 5545 .ics calendar file — handles timed and all-day events, escaping, line folding,

Validate any IBAN offline — mod-97 check digits, per-country structure, bank/branch extraction, and pretty formatting

Email verification & deliverability check (email validator / verifier) — validate an address, detect disposable/tempor

Call OpenAI's gpt-5-nano via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 per

Call OpenAI's gpt-5.4-nano via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 p

Call OpenAI's gpt-4.1-nano via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 p

Call OpenAI's gpt-4o-mini via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 pe

Call OpenAI's gpt-4.1-mini via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.005 p

Map a natural-language drug, diagnosis, or lab phrase to a current RxNorm, ICD-10-CM, or LOINC code. Use when an agent

Live USD spot prices for crypto assets via CoinGecko simple price API

Get a signed upload URL and a retrieval URL for one file, in one call. Your agent PUTs the bytes straight to storage —

Look a company up in GLEIF, the global Legal Entity Identifier register: LEI code, registered legal name, entity statu

Locus public pay-per-use API

Send a test request to a webhook URL and analyze the response

Find semantically similar prediction markets given an event_ticker.

Market brief in one call: prices (BTC, ETH and SOL by default, or ?symbols=eth,degen), Base gas, and market sentiment

MCPFax markets — On-chain token prices (defi_token_prices). Price: $0.001 USDC per call on Base.

Verifies an email address and its domain with DNS-based risk checks: MX, disposable-domain, role-account, SPF, DMARC,

Checks email deliverability by validating address format, MX reachability, temp-mail risk, role mailbox risk, and SPF/

Verifies an email address with syntax, MX, disposable-domain, role-account, SPF, DMARC, and DKIM checks. Same DNS-safe

Recent trades from any Polymarket market (by slug or conditionId) or for a specific wallet. Returns side, size, price,

Converts Excel files for import into Google Sheets. Outputs CSV that imports directly via File > Import > Upload (or p