the402 x402 endpoint directory

Queries Binance, Coinbase, Kraken, OKX and Bybit in parallel for one BASE/QUOTE pair, four seconds per exchange. An ex

Compares the volume of the most recent completed minute candle with the distribution of minute volumes over the chosen

Queries every public RPC endpoint this hub knows for a chain in parallel — at least three, usually five — and reports

CMS Care Compare lookup for every CMS-certified US hospital (~5k). Lookup by 6-digit CMS Facility ID for direct match,

Query a Qdrant collection for the nearest points to a given vector.

Live IP geolocation: country, city, org, and ASN for fraud and routing agents

QR code generator: turn any text or URL (up to 2000 characters) into a scannable PNG QR code, generated on our own har

Look up an ISO 4217 currency. Pass code (alphabetic like USD, or 3-digit numeric like 840) for the canonical record, o

Curated named color palette with hex codes, mood, and CSS variables.

Returns Base mainnet ETH and USDC balances for an address.

Follow a public redirect chain with per-hop HTTP status (SSRF-safe) for security agents

Current air quality for any coordinate worldwide. Pass lat + lon. Returns the US AQI (+ category Good/Moderate/Unhealt

English dictionary lookup via dictionaryapi.dev (Wiktionary-sourced). Returns full entries with IPA phonetic transcrip

Creative name generator. Categories: fantasy, startup, pet, band.

Query a Pinecone index for the nearest vectors to a given vector.

Daily reference exchange rates from the European Central Bank (via Frankfurter). 30+ major currencies. Pass base = 3-l

Look up or search the global LEI (Legal Entity Identifier) registry — the authoritative ISO 17442 directory of ~2.6M l

Adjust a US dollar amount for inflation between two dates ('what is $100 in 1990 worth today?'). Pass amount, from (YY

Search the federal banking compliance rules database. 56 rules across Reg DD, Reg Z, UDAAP, ECOA, BSA/AML, and more.

Searches realtime event listings.

https://x402.openwebninja.com/realtime-amazon-data/search

https://x402.openwebninja.com/realtime-local-and-maps-data/local-business-data/search

https://x402.openwebninja.com/realtime-local-and-maps-data/local-business-data/reverse-geocoding

https://x402.openwebninja.com/realtime-finance-data/stock-quote

https://x402.openwebninja.com/realtime-real-estate-data/zillow/search

https://x402.openwebninja.com/realtime-local-and-maps-data/local-rank-tracker/ranking-at-coordinate

Returns the full version history of a package from a single normalised schema that covers seven ecosystems. Versions a

https://x402.openwebninja.com/email-search/search-emails

Email address -> deliverability verdict. Checks syntax, MX record presence, disposable/temp-mail domain match, and SPF

One macro datapoint, cheap: value + prior + delta + date for a single indicator, for agents that want a number rather

Historical price, market cap, and volume data for any coin

Reads the key-tab-value lines of the VE.Direct text protocol, applies the unit scaling that belongs to each key, and d

Every relay is measured twice over. Over WebSocket a genuine REQ query is sent and the connection time, the time to en

Validates the pair of prefix and origin AS against the RPKI repository and returns the verdict together with every ROA

Takes a file digest and answers which released package version it is. Useful for an artefact found in a container laye

Answers the question an agent actually has about a product cycle: for the version in use, is support over, how many da

Turns the release history of a package into a maintenance signal an agent can act on. Four measurements go in: the age

https://x402.openwebninja.com/realtime-web-search/search-full

Matches declared classification tokens against a supplied published dual-use control list. Missing facts are returned

Checks supplied preference-origin criteria and reports the applied threshold. Missing facts are returned as null and n

Transforms coordinates between EPSG:4326 and EPSG:3857 with declared formulas. Missing facts are returned as null and

Selects a published emissions factor by activity, region and source edition. Missing facts are returned as null and na

Retrieves current package metadata from npm, PyPI, crates.io or Maven Central. Missing facts are returned as null and

Resolves a UN/LOCODE against a supplied official code-list record. Missing facts are returned as null and named in una

Evaluates a published TARIC duty measure for a commodity code and origin. Missing facts are returned as null and named

Check password strength with entropy and crack time

Validate JSON and optionally check against a JSON Schema

Compares scalar confidence with binary correctness, calculates mean squared Brier loss, partitions confidence into cal

Replaces private-key blocks, credential assignments, email addresses, Luhn-valid payment-card candidates, IPv4 address

Computes weighted pass rates and weighted scores from caller-labeled test outcomes, with deterministic category summar