the402 x402 endpoint directory

Pull emails, URLs, IPv4s, @mentions, and #hashtags out of free text. Returns deduped lists.

Fetch a site's robots.txt and answer: may this user-agent crawl this path? Returns the matched rule and all declared s

Line-by-line diff of two texts (LCS). Returns unified-style ops and change counts. Up to 2000 lines per side.

Parse CSV (quoted fields supported) into a JSON array of objects, using the first row as headers (header=false for arr

Share your namespace with another wallet so different agents can coordinate through it. Grant read or readwrite access

Recent sales for an NFT collection (or specific token) on any of 5 chains, ordered descending by block. Returns buyer,

Reverse-lookup an Ethereum address to its Farcaster account (via verified address). Returns FID, username, display nam

Top L2s by TVL via DeFiLlama. Returns each L2 with TVL in USD, native token symbol, and CoinGecko/CMC ids. Classificat

Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the m

Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-

Solve a bond's yield to maturity from its market price — the annual rate that present-values the coupons plus face to

Resolve authentication requirements across an OpenAPI 3.x or Swagger 2.x document. Returns the catalog of security sch

Search operations in an OpenAPI 3.x or Swagger 2.x spec against a free-text query. Tokenizes the query (lowercase, alp

Score an OpenAPI 3.x or Swagger 2.x spec on agent-readiness — i.e. does an LLM-driven caller have what it needs to cal

Mask emails, phone numbers, credit-card-like numbers, IPs, and SSNs in text. Returns the redacted text and counts by t

Classify an IP address: version, public/private/loopback/link-local, integer form, and reverse-DNS (PTR) lookup.

Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging,

Parse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays).

A past day's radar+safety snapshot, exactly as committed to the public git history the day it was taken - with the Bas

Extract structured elements: heading hierarchy (h1-h6), lists, tables as 2D arrays, and images with alt text, plus ele

Extract page metadata: title, description, keywords, author, published/modified dates, canonical, language, favicon, a

Extract all links from a page split into internal and external, each with anchor text and rel attribute, plus per-grou

Fetch a URL and extract clean main-content text with title, description, word count, and char count; boilerplate (nav/

Reverse-DNS lookup for an IP: PTR record plus a best-effort list of other domains hosted on the same IP.

Discover subdomains for a domain via Certificate Transparency logs (crt.sh); returns a de-duplicated, sorted list.

Live TLS certificate for a domain: issuer, subject, validity dates, days remaining, SANs, TLS version, and cipher suit

WHOIS registration data for a domain: registrar, creation/expiry/updated dates, nameservers, status, DNSSEC, and organ

Resolve every common DNS record type for a domain: A, AAAA, MX, TXT, NS, SOA, and CNAME in one call.

Capture a PNG screenshot of a single CSS-selected element on an http(s) URL; returns a JSON envelope with the PNG base

Render an http(s) URL to a PDF (A4/A3/Letter/Legal/Tabloid) with print emulation; returns a JSON envelope with the PDF

Capture a full-page (scrolled) PNG screenshot of an http(s) URL; returns a JSON envelope with the PNG base64-encoded u

Capture a viewport-sized PNG screenshot of an http(s) URL with headless Chromium; returns a JSON envelope with the PNG

Generate a PNG QR code URL for payment and onboarding payloads (upstream probed live)

Retrieve a public webpage as clean deterministic Markdown with source metadata, resolved links, retrieval time, and a

Public URL status, latency, and response header subset for uptime and health agents

Bounded read-only eth_call on Base for $0.002 USDC (max 4KB data/response).

Bounded eth_getLogs on Base (≤5 block span, ≤50 logs) for $0.002 USDC.

List observed US federal holidays for a year for $0.002 USDC.

Revalue an amount between years using U.S. BLS CPI for $0.002 USDC—informational only.

Look up a 20-char Legal Entity Identifier via GLEIF for $0.002 USDC with status and legal name.

Business-day counter for agents: weekdays or US federal holidays for $0.002 USDC—first-party calendar, no third-party

Unit conversion API for agents: length, mass, volume, time, data and temperature (up to 100 conversions per call) for

Validate a Cloudflare Turnstile, Google reCAPTCHA, or hCaptcha token server-side. You pass your OWN provider secret pl

Lookup a Farcaster profile by username or FID. Returns FID, username, display name, bio, profile picture URL, follower

List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event t

Check whether an email address has a Gravatar: hashes the normalized email (MD5, pure CPU — the raw address is never s

Public holidays for a country and year via Nager.Date (keyless, 100+ countries): date, local name, English name, natio

Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (USDC on every chain w

Resolve a 4-byte function selector or a 32-byte event topic hash to its known human-readable signatures, via the openc

Parse iCalendar (.ics) text into structured JSON events: summary, start/end, location, organizer, attendees, status, a