All services

Sunrise / sunset — Sunrise, sunset, solar noon, day length by coordinate.

Air quality — US & European AQI plus pollutant concentrations by coordinate.

Email validation — Syntax check + live MX/deliverability + disposable-domain flag.

MCPFax markets — Polymarket recent trades (polymarket_trades). Price: $0.001 USDC per call on Base.

Postal code lookup — ZIP/postal code → place(s) & coordinates.

MCPFax markets — Polymarket trader leaderboard (polymarket_leaderboard). Price: $0.001 USDC per call on Base.

Business-day math — Count business days in a range, or add/subtract N business days, skipping weekends & holidays.

IP geolocation — IP address → location, ASN, ISP.

MCPFax markets — Base gas price (gas). Price: $0.001 USDC per call on Base.

Latest version, licence, deprecation, repository and dependency count for an npm, PyPI or crates.io package. Live from the registry.

Timezone by coordinate — Coordinates → IANA timezone, UTC offset, local time.

Unit conversion — Convert between units (length, mass, volume, speed, area, data, time, pressure, energy, temperature, angle).

DNS lookup — Resolve DNS records via DNS-over-HTTPS.

MCPFax markets — Crypto spot prices (crypto). Price: $0.001 USDC per call on Base.

MCPFax markets — FX reference rates (fx). Price: $0.001 USDC per call on Base.

Public holidays — Public holidays for a country & year.

robots.txt / llms.txt — Fetch and parse a site's robots.txt and llms.txt.

MCPFax markets — Manifold markets (manifold_markets). Price: $0.001 USDC per call on Base.

MCPFax markets — On-chain token prices (defi_token_prices). Price: $0.001 USDC per call on Base.

MCPFax markets — Chain TVL ranking (defi_chains). Price: $0.001 USDC per call on Base.

Currency exchange rates — Reference FX rates (ECB) with optional amount conversion.

Read-only EVM contract call (eth_call) with decoded revert reason and optional gas estimate — simulate before you sign

Receive-only email inbox on a clean domain for 7 days — for account verifications without phone, captcha or personal address. No sending.

Backlink profile of a domain: summary metrics plus top 25 referring domains