the402 x402 endpoint directory

Perp funding-rate check, deterministic. Answers "what is the funding rate for this coin right now", "am I paying or ea

Single-paper lookup by DOI or title for research agents — citation count, influence, open-access status with a direct

Itemized fee breakdown and net P&L for any arbitrage trade — fees, slippage and gas. For arbitrage and trading agents.

Supported central bank codes (FED, ECB, BOJ, etc.).

Company metadata: name, exchange, sector, industry, SIC, location.

Full discography timeline for any artist worldwide: search by name, get all albums, EPs and singles with first release

Find auspicious days (ngay hoang dao / ngay tot) in the next N days for a specific activity: wedding, moving house, op

The combined market regime — one read fusing the stock Fear & Greed score and velocity, VIX, insider-buying sentiment,

Runs the same substring name search already used by sanctions.uk.check, plus the JP MOF and OFAC name lookups behind s

Date-scoped variant of our JP MOF / OFAC address list lookup: returns list status for a chosen date instead of only to

Narrow sanctions/asset-freeze segment of Japan regulatory events (資産凍結・経済制裁 items only) -- a tighter subset of reg.eve

Broad crypto-asset segment of Japan regulatory events, wider than reg.events.aml/stablecoin: AML/sanctions, tax (CARF)

Stablecoin & electronic payment instrument segment of Japan regulatory events (資金決済法, 電子決済手段). English, human-reviewed

AI & digital-regulation segment of Japan regulatory events: AI Basic Plan, generative-AI guidelines, cybersecurity str

Tax segment of Japan regulatory events: NTA crypto-asset tax treatment, CARF (Crypto-Asset Reporting Framework), tax-r

AML & sanctions segment of Japan regulatory events: JAFIC (criminal-proceeds act), MOF asset freezes, enforcement acti

Second Opinion quick: an independent reasoning-only check (no web research) of your claim's logic and consistency with

List the merchants behind the catalog. Filter by name or domain search, by country, or by product count, and page thro

Compliance deadline check: which major regulatory regimes apply where, what lands when, and whether a deadline has bee

Bibliography verification for AI research agents — POST up to 20 citations (DOIs or free-text references) and get a pe

Stablecoin parallel-rate premium — how far the street price of a digital dollar (per-venue USDT quotes) diverges from

Execute Python or JavaScript code in a secure, isolated cloud sandbox. Returns stdout, stderr, and the expression resu

Loudness-normalize any audio/video URL to a target LUFS with ffmpeg's loudnorm (EBU R128) and return MP3 - consistent

Live image search: ranked image results (title, source page, image URL, thumbnail URL, dimensions) from an independent

Second Opinion quick (async): reasoning-only check as a polled job. Required for Solana payments.

US labor-market headline indicators from the Bureau of Labor Statistics: the unemployment rate, labor force participat

The day's biggest percentage gainers across US equities, with current and previous-day OHLCV per ticker. From x402stoc

Nearby Citi Bike pickup stations with available bikes and e-bikes

Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer

Live valuations for private, pre-IPO companies — Anthropic, OpenAI, SpaceX, Anduril, Neuralink, Kalshi, Polymarket — i

Predicted next-period funding rate for each coin across venues — on-chain plus centralized perp venues (Hyperliquid, B

Live state of every perpetual-futures market in one call: per coin the mark and oracle price, hourly funding rate with

Use to discover the point-in-time archive: immutable daily snapshots of ephemeral market state (Hyperliquid perps/spot

Security analysis powered by Slither to detect vulnerabilities, reentrancy issues, and smart contract code quality pro

Bitcoin smart-fee curve for 1/3/6/12/24/144-block confirmation targets + trend classification (rising/stable/falling/s

The latest ~100 npm security advisories, normalized for machines: severity, CVSS, affected packages, vulnerable ranges

Token security / honeypot detector for a Base mainnet ERC-20: EIP-1967/1822 proxy + upgradeability detection, bytecode

Independently fetch, hash, timestamp and archive a URL or API response; returns a signed certificate. Merkle-anchored

Returns demand depth for one category: probe volume, distinct sources, buyer-class share, probed price points, and a d

Google Solar API - Closest building roof insights including imageryDate

Raw source verification for a TeleSint record. Pass id (UUID from any items[].id). Returns original defanged message t

Malware family intelligence from Telegram: new sample drops, behavior analysis, loader/stealer/RAT/backdoor writeups.

Threat actor profiles from Telegram. Filters: name, nation_state(kp|ru|cn|ir), motivation(financial|espionage|hacktivi

C2 infrastructure from Telegram. Filters: framework(cobalt_strike|sliver|havoc|brute_ratel), severity, min_confidence,

Dutch vehicle lookup by kenteken (registration, fuel, APK). Send the kenteken in a JSON request body via POST. Payment

Sale price after one or more stacked percentage discounts (applied sequentially, not summed) plus an optional flat amo

Live on-chain spot prices for every token on the Hyperliquid DEX (HYPE, PURR, and hundreds more), quoted in USDC: mid/

Counterparty due diligence in one call: validates the EU VAT ID against the live VIES register, screens the company or

Hyperliquid trader skill score. POST {user}. Returns derived metrics: skill_score (0-100), classification (sharp/neutr

LLM price-change alert feed: track when OpenAI, Anthropic, Google or any AI provider reprices GPT, Claude, Gemini or a