the402 x402 endpoint directory

Unified wallet intelligence (POST wrapper, body: {wallet}) — $0.005 USDC

Trending crypto coins in the last 24h — the most-searched tokens on CoinGecko right now with name, symbol and market-c

Current price, 24h and 7d percent change, and a bullish/bearish/neutral signal for a crypto asset (SOL, BTC, ETH, XRP,

Brazil SELIC policy interest rate, current target and recent history. Central Bank of Brazil.

Decode an EVM signature request (EIP-712 typed data, Permit/Permit2, or ERC-20 approve calldata) into a structured int

Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube tra

AI vision: describe any public image, including visible text (OCR-lite).

Weather forecast and air quality. Current conditions, a 16-day daily forecast, and air-quality (AQI, PM2.5, ozone) for

Before sending funds, check if the recipient is an address-poisoning look-alike. Give us the recipient and your known/

US Treasury yield curve API: the latest Daily Treasury Par Yield Curve — yields in percent for 13 maturities from 1 mo

Resolves an X handle to a public profile: id, username, display name, bio, verification fields, created_at, followers,

Text summarizer / summarization API — condense text, Markdown, or a URL into a TL;DR plus key bullet points using Clau

How is TradFi trading right now, next to crypto? Any list of US equity symbols plus the S&P 500, NASDAQ and Dow, each

Returns network-wide totals: total x402 events, service count, and a UA classification breakdown (agent vs browser vs

Resolve ENS in either direction on Ethereum: an ENS name (vitalik.eth) → its 0x address, or a 0x address → its primary

Find better alternatives to an x402 endpoint. Given a resource URL, returns the top semantically-similar endpoints (ma

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

Profile enrichment from LinkedIn URL

Live token prices.

Resolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns CIK i

Your own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payme

Live gas price snapshot for a chain - slow / standard / fast tiers in gwei, plus the latest base fee. Sampled from eth

Calculates IPv4/IPv6 subnet details from CIDR notation — network/broadcast, netmask, wildcard (Cisco ACL) mask, binary

List and search active Polymarket prediction markets with outcome probabilities, liquidity, volume, end dates, and URL

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. List of available RPC commands, or detailed h

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Active ZMQ notification endpoints from chainq

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Active RPC commands and server state from cha

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Known peer addresses from the node's address

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Node network state from chainquery's independ

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Estimated network hashes per second over a wi

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Cumulative network traffic totals, bytes in a

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Mining-related info from chainquery's indepen

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Mempool summary from chainquery's independent

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Node memory-usage statistics from chainquery'

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Status of the node's optional indexes such as

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Current proof-of-work difficulty from chainqu

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Soft-fork deployment and activation status fr

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Number of peer connections from chainquery's

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. All known chain tips with height and branch s

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Current block height of the chain tip from ch

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Current Bitcoin (BTC) chain state from chainq

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Hash of the current chain tip (best block) fr

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Status of manually added peer nodes from chai

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

Detect the language of any text input using stopword-set matching and Unicode script analysis — returns the detected l

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

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

Look up a single Twitter/X user profile by their numeric user ID. Returns full profile data including id, name, userna

Convert an amount between currencies at the official European Central Bank reference rate. Answers "what is the USD to

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