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Analyze orderbook depth for a Uniswap V3 pool (POST variant)

Get current weather and forecast for a location

Audit email deliverability for a domain — checks SPF, DKIM, DMARC, MX records (POST variant)

Get real-time crypto token price with 24h change, market cap, and volume

UUID generator API, UUID generator, UUIDv4 generator, UUIDv7 generator, random UUID generator, unique ID generator, batch UUID generator, GUID generator, RFC 4122 UUID generator, online UUID generator, database UUID generator. Generate cryptographically random UUID v4 or time-sortable UUID v7, single or batch up to 100. For AI agents, distributed systems, database row IDs, request tracking, correlation IDs, idempotency keys. Accepts payment on Base or Solana — either network works.

Find the best cross-chain bridge route (POST variant)

AI API endpoint - pay per request with USDC on Base and Solana

USD Coin

US real estate and mortgage — 30yr/15yr fixed rates, ARM, housing starts, permits, Case-Shiller HPI

Paid ($0.01 USDC via x402). Narrative detail: content items, source attribution, and lifecycle updates for one narrative. Proxied from the Pulse service. Compute-first / settle-after — you are never charged when Pulse is unavailable or returns an error.

Daily reference exchange rates from the European Central Bank (via Frankfurter). 30+ major currencies. Pass base = 3-letter ISO 4217 currency (default USD), optional symbols = comma-separated target codes (default = all available), optional date = YYYY-MM-DD for historical rates (history back to 1999, business days only; omit for latest), optional amount to convert (default 1). Returns base, date, amount, and a map of currency code → rate.

Look up an ISO 639 language. Pass code in any form — 639-1 (en), 639-2/B (ger) or 639-2/T (deu) — or name (English, partial match). Returns the English name and all sibling codes (alpha-2, alpha3-B, alpha3-T), so you can normalize a messy language tag to canonical ISO identifiers and resolve the bibliographic-vs-terminological alpha-3 split (e.g. German = de / deu / ger). Bundled authoritative ISO 639 data.

Current spot price and market data for crypto assets. Pass ids as comma-separated CoinGecko asset ids (e.g. bitcoin, ethereum, solana, usd-coin — lowercase id, not ticker symbol; up to 25 per call) and optionally vs (comma-separated fiat/crypto quote currencies, default usd). Returns per-asset price, market cap, 24h volume, and 24h percent change, plus the data timestamp. Live market data past any training cutoff. Price data by CoinGecko.

Look up an Autonomous System (BGP) by AS number. Pass asn as AS3333 or 3333. Returns the AS holder/operator name, the IANA/RIR allocation block it falls in, whether it is currently announced, and a live routing-status block: first/last seen prefixes, announced IPv4/IPv6 prefix + address counts, RIS peer visibility, and observed BGP neighbour count. Data: RIPEstat (RIPE NCC), free and public. Distinct from geo.ip (host geolocation) and dns/whois (name lookups) — this is who-owns-and-routes-this-AS, observed live from the global routing table. For network forensics, abuse/security triage, and infrastructure mapping.

Global natural events tracker via NASA EONET v3 (Earth Observatory Natural Event Tracker). Returns active and historical events curated by NASA EOSDIS: wildfires, severe storms, volcanoes, floods, droughts, landslides, sea/lake ice, dust/haze, manmade incidents, water-color anomalies. Each event includes geo-located observation points with timestamps, source attribution (USGS, NWS, IRWIN, GDACS, etc.), and category. Filter by status (open/closed/all), days-back window, category, or bounding box.

NYC Housing Preservation & Development (HPD) violations — every notice of violation issued at a multi-family building. Search by `bbl` (10-digit) or `address` (street_name substring). Filter by `classCode` (A=least severe, B=hazardous, C=immediately hazardous) and `currentStatusOnly=true` to limit to open violations. Each row carries violation id, building id, full address + apartment + story, inspection + approved + certify-by + correct-by dates, current status + status date, and the narrative NOV description. Use for landlord-history, code-enforcement, and tenant-rights agents.

Get average solar resource estimates for any latitude/longitude via NREL. Returns annual + monthly averages for: Direct Normal Irradiance (DNI, kWh/m²/day — solar concentrators), Global Horizontal Irradiance (GHI, kWh/m²/day — flat-plate panels), and Tilted-At-Latitude irradiance (optimal fixed-panel orientation). Sourced from NREL National Solar Radiation Database (NSRDB). Useful for rooftop solar feasibility, off-grid design, and renewable-energy modeling.

Full-text search across all of Hacker News (via the Algolia HN API). Search stories or comments by keyword, sorted by relevance or by date (newest first). Filter by tags (story/comment/ask_hn/show_hn/poll) and by author. Each hit: title, URL, author, points, comment count, story/comment text, created time, and canonical HN URL. Net-new vs news.hn-top (curated feeds) and news.search (general news).

Search CMS Open Payments — every payment from a drug/device manufacturer or GPO to a US physician or teaching hospital under the Sunshine Act (~10M records per year). Lookup by 10-digit NPI for the recipient (most precise), by last/first name + state, or by payer (manufacturer) name. Each record includes recipient (NPI, name, specialty, location), payer (manufacturer name + state/country), payment (amount USD, date, nature of payment such as 'Consulting Fee'/'Food and Beverage'/'Travel'/'Royalty', form of payment), and associated product (drug/device name + therapeutic area). Investigative journalism + KYC + healthcare conflict-of-interest research. Public-domain federal data.

Resolve a researcher by ORCID iD. Pass orcid (e.g. 0000-0002-1825-0097, with or without the https://orcid.org/ prefix). Returns the researcher name, affiliations (employments and educations with organization, role, department, years, and a current flag), a total works count, and a works summary (title, type, year, DOI when present). Data: ORCID Public API, free and keyless; per-record visibility is set by the record holder. The canonical author key in scholarly metadata — pair with /api/papers/search, /api/paper/doi-lookup, and /api/research/org (ROR institutions). Use to verify an author identity, current institution, or publication record before citing.

Look up country metadata via REST Countries. Pass alpha2 (2-letter ISO 3166-1), alpha3 (3-letter), or name (with optional fullText=true for exact match). Returns common + official name, ISO codes, region + subregion, independence + UN-member flags, capital(s), population, area km², landlocked flag, neighboring borders (alpha-3), timezones, currencies (code → name + symbol), languages, calling code, flag emoji + SVG/PNG URLs, lat/lng coordinates, Google Maps + OSM URLs, driving side, top-level domains.

Current weather conditions for a US ZIP code (temperature, wind, humidity, conditions). Backed by the US National Weather Service (api.weather.gov) — public domain, no rate-limit pressure on commercial use.

Unified read API over US National Park Service developer.nps.gov. Pick a resource: parks (every NPS unit — historical parks, monuments, seashores, etc.), alerts (closures, dangers, info), campgrounds (NPS-operated campgrounds with reservation links), events (talks, walks, ranger programs), newsreleases (park news), thingstodo (activities by park), visitorcenters. Filter by parkCode (CSV — e.g. "acad,yose,grca"), state, or free-text query. Returns the upstream NPS payload verbatim (rich nested objects with images, addresses, operating hours, etc.).

Search MSHA mine safety accident records via US Department of Labor Open Data Portal (~738k accidents at US mines). Each row carries mine id, contractor id, mine subunit (underground/surface/mill/etc.), FIPS state code, accident date, classification, narrative, injury degree + nature + body-part, occupation code, experience, schooling, sex, age. Filter by mine id, contractor id, FIPS state code, subunit code, accident date range, classification code. Source of truth for fatalities + injuries at every US coal + metal/nonmetal mine since 2000.