the402 x402 endpoint directory

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

ERC-20 token metadata on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base): name, symbol, decimals and

Generate a QR code from text as PNG (base64) or SVG. Custom module size, quiet-zone margin, and hex colours. Determini

Forward geocoding — Place name → coordinates, country, timezone.

Haimovich 2020 qCSI (Table 2 bedside points): RR ≤22 → 0, 23–28 → 1, >28 → 2; SpO2 >92 → 0, 89–92 → 2, ≤88 → 5; O2 ≤2

Browse Quotient's canonical underlying-asset directory without forecast or venue-price data. Use this for stable Asset

Unit conversion — Convert between units (length, mass, volume, speed, area, data, time, pressure, energy, temperature,

LLM completion per call, no account and no API key: POST a prompt (or a messages array) and get the model answer as JS

EU VAT decision engine for invoicing and e-invoicing: determines place of supply, reverse charge, intra-Community supp

Compare one grocery item across nearby stores in a US ZIP: price, sale price, package size, price per comparable unit,

MCPFax markets — Crypto spot prices (crypto). Price: $0.001 USDC per call on Base.

robots.txt / llms.txt — Fetch and parse a site's robots.txt and llms.txt.

Total value locked for any DeFi protocol with per-chain breakdown via DefiLlama, by protocol slug such as aave-v3 or u

Apgar score from five 0-2 newborn signs (appearance, pulse, grimace, activity, respiration). Deterministic published s

Sheiner–Tozer / Winter–Tozer albumin-adjusted total phenytoin: Ccorr = Cobs / ((0.2 or 0.1) × albumin_g_dl + 0.1). Ren

Convert a glucocorticoid milligram dose among hydrocortisone, prednisone, and dexamethasone using Meikle 1977 equivale