the402 x402 endpoint directory

Inspect an ERC20 token contract for buy/sell tax fields, owner renouncement and basic honeypot risk flags on EVM chain

One tokenized real-world asset by id (gold, nvidia, tesla, spy ...): identity, type, image and web slug joined with it

Bundled execution of the OpenAPI spec audit workflow - Lint an OpenAPI spec and validate a sample payload against it -

Bundled execution of the URL inspector workflow - Quick URL health and metadata check - parse the URL structure, verif

Bundled execution of the Loan comparison workflow - Compare two or more loan offers - different rates, terms, fees, pr

Bundled execution of the Schema guard workflow - Contract-test a JSON payload in one call: validate it against your sc

Bundled execution of the Markdown to HTML round-trip workflow - Markdown to HTML and back - a round-trip conversion th

Decode a 17-character VIN to manufacturer-supplied vehicle metadata via NHTSA's vPIC database. Returns identity (year,

Uploads an image to Twitter/X for the authenticated user and returns a media_id to attach to a tweet. Send the file as

What a vehicle fault code means, with source-attributed generic and make-specific definitions and any disagreement bet

Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, f

Fetch a URL and return link-preview metadata from Open Graph, Twitter Card and standard meta tags.

Fetch a URL and return its main article as clean HTML, Markdown and plain text.

Fetch a URL and pull out its machine-readable structured data: all JSON-LD blocks (schema.org), Open Graph and Twitter

Look up a Bitcoin transaction by txid: confirmation status, block height and time, fee (sats), effective fee rate (sat

Balance and activity for a Bitcoin address (base58 1…/3… or bech32 bc1…): confirmed balance (sats and BTC), total rece

Live snapshot of the Bitcoin mempool: number of unconfirmed transactions, total pending virtual size (bytes and MB), t

Live recommended Bitcoin transaction fee rates (in sat/vB) for next-block, ~30-minute, ~1-hour, economy and minimum co

Assess how trustworthy a domain is using authoritative live signals, not just its spelling. Fuses RDAP registration da

Top crypto news headlines (agent-optimized).

Convert latitude/longitude coordinates into the nearest structured address. Optionally set the preferred result langua

Convert a free-form address or place name into ranked coordinates with a structured, normalized address. Optionally bi

Fetch a Wikidata entity by Q-id: label, description, aliases and its claims (property → values).

Search Wikidata for entities matching a text query, returning candidate Q-ids with labels and descriptions.

Validate a Latvian VAT (PVN) number via the State Revenue Service VAT-payers register on data.gov.lv. Validity means t

Validate a Polish VAT (NIP) number via the Ministry of Finance VAT white list (Wykaz podatników VAT). Validity means t

Validate a Czech VAT (DIČ) number for a legal entity via ARES (Czech Ministry of Finance). Validity means the subject

Validate a French VAT (TVA) number via the government recherche-entreprises API. Validity means the SIREN exists and t

Validate a Finnish VAT (ALV) number via the PRH/YTJ open data API. Validity means the entity exists and holds a live e

Validate a Norwegian VAT (MVA) number via the Brønnøysund Enhetsregisteret. Validity means the entity exists and is en

Validate an email address — syntax, MX/A deliverability lookup, and disposable / role-based address detection. No mail

Look up a domain's RDAP registration data — registrar, status, creation/expiry/update dates, nameservers and DNSSEC. U

Open a TLS connection to a host and report its certificate — issuer, subject, validity window, days remaining, SANs, f

Reference exchange rates for a base currency against some or all supported currencies (latest or a historical date).

Convert an amount from one currency to another using reference rates (latest or a historical date). Amount defaults to

Reverse-resolve an IPv4 or IPv6 address to its PTR hostname(s). No PTR record returns an empty list. This is reverse D

Resolve DNS records for a hostname — A, AAAA, CNAME, MX, TXT, NS, SOA, CAA or SRV. NXDOMAIN or an absent record type r

Measures water and wetland share for exactly two European coordinates with one method and reports the signed differenc

Measures built-up share for exactly two European coordinates with one method and reports the signed difference and win

Measures tree-cover share for exactly two European coordinates with one method and reports the signed difference and w

Measures grassland share for exactly two European coordinates with one method and reports the signed difference and wi

Measures cropland share for exactly two European coordinates with one method and reports the signed difference and win

Measures dominant land-cover class for exactly two European coordinates with one method and reports the signed differe

Measures surface drainage tendency for exactly two European coordinates with one method and reports the signed differe

Measures solar orientation index for exactly two European coordinates with one method and reports the signed differenc

Measures local depression depth for exactly two European coordinates with one method and reports the signed difference

Measures local relief for exactly two European coordinates with one method and reports the signed difference and winne

Measures topsoil texture class for exactly two European coordinates with one method and reports the signed difference

Measures terrain ruggedness for exactly two European coordinates with one method and reports the signed difference and

Measures dominant aspect for exactly two European coordinates with one method and reports the signed difference and wi