the402 x402 endpoint directory

Per-venue slippage scan for one crypto perpetual at $1K/$5K/$10K notional, across tracked CEX and DEX venues — every v

Historical per-venue funding rates for one crypto perpetual, aggregated 1h/4h/1d, across tracked CEX and DEX venues —

US airport status from FAA: all airports currently with closures, ground stops, ground delays or arrival delays, with

Every transaction receipt in one block, fetched as a single upstream read and summarised: tx count, succeeded vs faile

The complete list of tracked coins (~18k) as {id, symbol, name}, paged: `page` + `perPage` (1-500, default 250). `incl

Global DeFi snapshot: DeFi market cap (USD), ETH market cap, DeFi-to-ETH ratio, 24h DeFi trading volume, DeFi dominanc

RSI, MACD, EMA 20/50/200, SMA 20/50, Bollinger bands, ATR and VWAP computed deterministically from live candles for on

A one-call options market summary for a currency: index price, DVOL, call and put open interest with the put/call rati

Cast volume over time for a search query: how many Farcaster casts matched per bucket across the last 1d, 7d, 30d, 90d

Resolve a name or ticker to coin ids: full-text search returning matching coins (id, symbol, name, market cap rank, or

Coin categories (Layer 1, Meme, AI, DeFi, Stablecoins, RWA, ...) ranked by market cap, with 24h market cap change %, 2

Discover a website's URLs in one call: reads robots.txt, its declared sitemap(s) (sitemap indexes and gzipped sitemaps

The reply thread under a Farcaster cast (by hash or URL): the root cast plus replies flattened with their depth (1-5 l

BTC-denominated exchange rates for ~60 units: crypto (ETH, LTC, BNB, SOL, ...), fiat (USD, EUR, JPY, ...) and commodit

Price, market cap and 24h volume of a coin on ONE past date (00:00 UTC snapshot), in every currency at once plus your

Top-holder concentration for a Solana token mint: the 20 largest holders with token account, owner wallet, balance, pe

Search Farcaster casts by keyword (literal, semantic or hybrid match), newest first, optionally filtered to one author

Crypto exchanges ranked by trust score: id, name, country, year established, trust score (1-10) and rank, 24h volume i

Live price, market cap, 24h volume and 24h change for ERC-20 / SPL / other chain tokens looked up by CONTRACT ADDRESS

Sunrise / sunset — Sunrise, sunset, solar noon, day length by coordinate.

IPCA consumer inflation, latest month and 12-month accumulated.

Current Selic target rate set by the Brazilian central bank.

Summarize and compress text, Markdown, or JSON into a structured summary. Output as prose, bullets, headline, or TLDR,

Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable

robots.txt AI-crawler access matrix: for the 2026 cohort of AI and answer-engine crawlers (GPTBot, ChatGPT-User, OAI-S

Check whether an accrediting agency is recognized by the US Department of Education. Give an accreditor name and get b

Find a US hospital's machine-readable price files from its website domain. Reads the hospital's root cms-hpt.txt point

Standardize a company name, person name or address to a canonical form. Canonicalises legal forms, drops business stop

Compute a deterministic similarity key for a name or address: the cheap first step of client-side blocking and dedupli

Reverse BIC / SWIFT code lookup: given a BIC, return the resolved bank name(s), the country and the domestic bank code

Team profile for a major sports league, normalized to one cited JSON. Give a league and a team name or abbreviation an

League table and standings for a major sports league, normalized to one cited JSON. Give a league such as mlb, nhl, nf

Live and recent game scores for a major sports league, normalized to one cited JSON. Give a league such as mlb, nhl, n

Bidirectional Farcaster identity and wallet resolver. Give an address to get the FID it belongs to (custody address re

One-call Farcaster profile fusion. Give one of fid or username and get back the full profile (display name, bio, pictu

Focused check of a site's /llms.txt and /llms-full.txt: presence, size and llmstxt.org structural validity (an H1 titl

US federal income tax estimate for a tax year: taxable income, tax, marginal and effective rate, per-bracket breakdown

Detect structured PII in a text blob: emails, phones, credit cards, bank and tax ids, IP and MAC addresses, crypto add

Pure-compute typosquat and homoglyph check on a hostname: edit-distance to a curated brand list, look-alike character

Classify goods against the US Harmonized Tariff Schedule. Give a keyword or an HTS code and get the matching HTS lines

Monte-Carlo geometric-Brownian-motion simulation of terminal price and European option payoff, with percentiles and a

Get the full detail of one US federal award by its generated_internal_id (returned from /govcon/awards): award id, typ

USGS ASCE 7 seismic design values for a US point: Ss, S1, SDS, SD1, seismic design category, and PGA, for a US address

Preflight trust check of another x402 endpoint before an agent pays it. From the target resource URL: a composite trus

Fuzzy-screen a person or organization name against the official public sanctions lists (OFAC SDN, UK, EU, UN), includi

Top GitHub repositories by language and/or topic (optionally newer than a date), ranked by stars/forks/recently-update

Package intelligence across npm / PyPI / crates: latest version, age, release cadence, deprecation/yank, license, and

GitHub repository health & intelligence for due-diligence / dependency choice: stars, forks, open issues, watchers, si

Basename/ENS resolution on Base: forward name->address (give 'name') or reverse address->name (give 'address', forward

Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polyg