the402 x402 endpoint directory

Search the US Federal Register: proposed rules, final rules, notices and presidential documents, by term, agency, docu

Academic literature from Crossref, the DOI registry itself. Search by topic, author or exact DOI and get normalised re

Historical price series for an asset slug (capped data points).

Historical price series for an asset slug (capped data points).

Recent posts and engagement for any public Telegram channel, with views measured against subscriber count — the ratio

Turns any Shopify store's public catalogue into a read on the business: catalogue size, price bands, median price and

Steam reviews scored by how long the reviewer actually played. A negative review from someone with 400 hours means som

Market Data Integrity Attestation. The caller supplies the observations. Tradebot checks causal timing, freshness, gap

Where did this address get its money? Walks the funding chain upward and returns the account that ultimately paid for

No-LLM host smoke: disk, load, memory, open_for_work. Cheapest settle test on dual-rail USDC.

No-LLM host smoke: disk, load, memory, open_for_work. Cheapest settle test on dual-rail USDC.

A heartbeat that costs money, and therefore proves more than a health check: not merely that the server answers, but t

$0.005/lookup. Reverse-geocode coordinates to the nearest address — lat/lng in, street address out. 1¢ x402 min; remai

$0.0008/call. Frame-sampled thumbnail sprite sheet from a video — scrubbers and previews in one call. 1¢ x402 min; rem

$0.005/image. Flag unsafe or inappropriate image content (Rekognition moderation) — categories with confidence. 1¢ x40

Upcoming climate and weather event resolutions — Upcoming climate and weather market resolutions in date order with cu

Latest vehicle recalls (FDA/USDA/CPSC normalized) — Latest vehicle recalls across FDA, USDA FSIS, and CPSC in one norm

Exa Search - Neural search across the web

Get flight information by ident (designator, registration, or fa_flight_id)

Deterministic dataset profile (CSV/Parquet)

Check a URL against URLhaus malware database and heuristic phishing pattern analysis — returns threat classification,

Check if a domain name is available for registration by querying RDAP and DNS — pass a bare name (e.g. mybrand) to swe

$0.003/call. Render HTML to PDF — sandboxed headless Chromium, print-quality output. 1¢ x402 min; remainder auto-credi

$0.001/page. Diagnose and rewrite a damaged PDF — recover files other tools reject. 1¢ x402 min; remainder auto-credit

Extract metadata and readable text from a public URL.

Pay-per-use browser sessions with crypto. No API keys, no accounts -- just pay and connect via x402 or MPP.

Top open Polymarket prediction markets for a topic, ranked by 24h volume: event title, end date, and per-market outcom

Open markets on Kalshi, the CFTC-regulated US event exchange, most-traded first: ticker, title, live yes bid/ask (USD,

Package intelligence from deps.dev (Google Open Source Insights, data CC-BY 4.0): resolved license list, known advisor

Security audit of one exact dependency version, backed by OSV.dev (Google), which aggregates public advisories (GHSA,

Historical daily solar irradiance and weather series from NASA POWER for any lat/lon: ALLSKY_SFC_SW_DWN (kWh/m2/day),

OECD Composite Leading Indicator (amplitude-adjusted, long-term trend = 100), the reference early signal of business-c

Screen a name against the five official sanctions lists (EU, US OFAC SDN, UN, UK FCDO, French asset freezes) from a sn

Fresh EU public procurement notices from TED (Tenders Electronic Daily, official Publications Office API, new notices

Daily feed of French public tender notices from BOAMP (DILA official open-data portal, Licence Ouverte), newest first.

Legal announcements from the French BODACC official gazette for one company, by SIREN (Luhn-validated). Query: ?siren=

List Wirecutter review URLs from the public Wirecutter review sitemaps. Defaults to recommendation-like review pages.

Per-coin positioning brief: exchange-median spot (Binance/Coinbase/Kraken, spread disclosed), Hyperliquid funding, ope

Searches for a person from caller-supplied identifiers and returns a normalized public-data record. Accepts email/name

Reference list of security type codes used in ticker reference data (e.g. CS = Common Stock, ETF, PFD, WARRANT) with d

Returns upcoming soccer event resolutions in date order.

Upcoming NBA basketball event resolutions — Upcoming NBA basketball market resolutions in date order with current blen

Upcoming MLB baseball event resolutions — Upcoming MLB baseball market resolutions in date order with current blended

Upcoming science and technology event resolutions — Upcoming science and technology market resolutions in date order w

Upcoming world politics event resolutions — Upcoming world politics market resolutions in date order with current blen

Upcoming US politics event resolutions — Upcoming US politics market resolutions in date order with current blended pr

Upcoming Federal Reserve event resolutions — Upcoming Federal Reserve market resolutions in date order with current bl

Upcoming entertainment event resolutions — Upcoming entertainment market resolutions in date order with current blende

Upcoming economics event resolutions — Upcoming economics market resolutions in date order with current blended probab

Upcoming crypto event resolutions — Upcoming crypto market resolutions in date order with current blended probabilitie