Explore APIs

Geocoding & Weather geocode: Place name or address -> coordinates, structured address and bounding box (OpenStreetMap Nominatim).

Return both the fully-expanded (eight 4-hex groups) and canonical compressed (RFC 5952) forms of an address. IPv4 is returned unchanged in both fields.

Recent earthquakes worldwide above a magnitude, newest or largest first, optional bounding box, with a match count.

The most recent quality snapshot for the repository. Returns 404 if no snapshot exists.

Compute the level monthly payment, total paid and total interest of a fully-amortizing loan. Handles a 0% rate. Set schedule=true to also return the full month-by-month amortization table.

IP risk check (beta) for logins and checkouts: is a public IPv4 address on the Spamhaus ZEN blocklist (spam, botnets, hijacked networks) or a Tor exit node? Includes the network owner. Returns a low, medium or high risk level.

Official FX rate — one African pair. Official forex reference rate vs USD for one African currency: KES (Kenyan shilling), NGN (naira), GHS (cedi), TZS, UGX, ZAR, EGP, RWF, via Frankfurter (frankfurter.dev). Frankfurter blends published central-bank reference rates; the number is that blend, not a single central-bank fixing. Each response names the source and carries as_of (Frankfurter's rate date

Bitcoin and crypto trend signal: is a pair bullish, bearish or neutral right now? From the Ichimoku Cloud (cloud position, tenkan/kijun cross) for BTC, ETH, SOL or any top-200 coin on any interval, from live candles on Binance.US, Kraken, Gate or MEXC.

Lab quote: a filter query (+must -exclude "topic" (a OR b) wild* year:a..b) in; matching paper volume by year and research community, and a binding price per deliverable out.

Country inflation and CPI history from World Bank WDI: annual consumer-price inflation (%) and consumer price index (2010=100), by ISO3 country for the last 1-10 complete years. Includes independent latest values, units, nulls, source update date and IMF/CC BY attribution. Annual history, not monthly releases or forecasts; CPI levels do not compare prices across countries.

Base gas oracle / Base gas price API / Base L2 gas fee tracker / real-time gas estimator / swap cost estimator. Returns the current Base fee, fast/standard/slow priority tiers, the USD cost of a typical swap, and a congestion recommendation. For AI agents, trading bots, and wallets timing transactions on Base to minimize gas.

Get live EVM gas pricing with EIP-1559 breakdown and USD cost estimates

About page discovery repair plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.

Caffeine remaining after hours, and the time until it drops below a threshold, from a half-life you can set (default 5 hours).

Compact BTC funding regime state from a four-venue normalized surface: regime label, surface median, 30d z-score, same-sign share, spread, dispersion, venue count, freshness. Ed25519-signed. Data, not advice.

Agent profile lookup. Returns trust score, component breakdown, feedback counts, and metadata for any ERC-8004 agent.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Currently banned peer IPs and subnets from chainquery's independent full node. Bitcoin Core listbanned.

Is this x402 endpoint safe to pay? Vet an unknown seller BEFORE paying: pay/avoid verdict, 0-100 trust score, live 402 probe, scam flags (payTo hijack, bait-and-switch pricing, honeypot, wrong asset) and an on-chain check of the receiver on Base. Reads x402 v1 (body) AND v2 (PAYMENT-REQUIRED header) — body-only checkers call live v2 services dead. ?endpoint=url; omit for a trust-ranked catalog.

Global news article search by GDELT — normalized fulltext search across worldwide media (query syntax: phrases, OR, sourcecountry, theme, tone) returned as a clean snake_case envelope.

Current USD market snapshot for a supported cryptocurrency symbol or CoinGecko asset name

BlackForge crypto market data from the major spot exchanges: every column, 1-minute to daily buckets, 90-day lookback. Covers 100 billable rows; finer buckets and premium columns count as more than one row each.

Buy a site upload slot. Upload a zip file, then activate to extract and serve as a static site.

SSL/TLS certificate check: expiry, issuer, SANs, chain validity, hostname match, negotiated protocol/cipher, and weak-algo warnings for a public HTTPS host. Clean JSON.

Locus public pay-per-use API

Crypto headlines of the last 72 h matching keywords or tickers (all words must match; tickers and asset names like ETH/ethereum map to tags), newest first, with corroboration count.

Extract claims. Splits text into atomic, checkable claims with character spans, grounding_required, claim_type (number|date|quantity|quote|named_entity_fact|comparison|opinion|prediction|other) and check_worthiness (high|medium|low). Strips hedges, resolves pronouns across sentences, and splits compound sentences. $0.05 USDC.

Adler-32 checksum (as used by zlib) over the input payload. Faster than CRC-32 but weaker for short inputs. Returns the checksum as an unsigned integer and 8-digit hex. Non-cryptographic.

Catalog snapshot: every site in the 402registry catalog of sites verified visible to AI crawlers, as one JSON file rendered at purchase, every record dated. Basic fields are free at https://402registry.com/registry.json; this adds per site the findings by name and severity, the stack, the title and what the crawler saw without JavaScript (AI bot status codes, robots, sitemap, llms.txt). No input:

Pay a tiny amount of USDC and receive one delightfully useless fact.

Exact age in years, months and days from a birth date as of a date, plus next birthday and days until it.