Real-World Services

Periodic table API: full data for any of the 118 elements by symbol, name, or atomic number — atomic mass, category, phase, electron configuration, electronegativity, melting/boiling points, density, and more.

DNS lookup API: resolve any DNS record type (A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV, PTR) for any hostname, with DNSSEC validation status and full answer records (name, type, TTL, data) as JSON. Use for infrastructure monitoring, email deliverability checks, domain verification, and security tooling. Cached 5 minutes.

Heat alert API: every Heat Advisory, Extreme Heat Warning, and Excessive Heat Warning currently active anywhere in the United States — affected zones, severity, urgency, and full alert text — as normalized JSON. Use for outdoor-labor safety, public-health notification, and event-cancellation agents. Public-domain government data, cached 5 minutes. Legitimately returns an empty list outside of active heat events.

WHOIS-style registration lookup: created/updated/expiry dates, registrar, status codes, and nameservers for any domain, normalized from the authoritative registry into JSON. For "who owns this domain," availability checks, expiry monitoring, and security-screening agents.

Fetches a company's latest 10-K, 10-Q, or 8-K from SEC EDGAR and returns a structured JSON summary: a plain-language overview, the key risk factors, MD&A highlights, any forward guidance, and an overall sentiment label. Choose the document with `?type=10-K` (also 10-Q, 8-K). Built for agents that need the substance of a filing without parsing hundreds of pages of HTML. From x402stock

Agent-facing decision procedure for buying travel data pay-per-request: when to pay StableTravel-style APIs (Amadeus flights, FlightAware live tracking, hotels, transfers) versus free lookups, budget caps per trip leg and per search, rebooking and refund thresholds, currency and fee checks, and kill criteria that block a purchase when verification fails.

Provides data and information about sky conditions, celestial observations, or atmospheric phenomena.

Returns data on yield rates and returns from financial instruments or investment opportunities.

Agent-facing decision procedure for buying travel data pay-per-request: when to pay StableTravel-style APIs (Amadeus flights, FlightAware live tracking, hotels, transfers) versus free lookups, budget caps per trip leg and per search, rebooking and refund thresholds, currency and fee checks, and kill criteria that block a purchase when verification fails.

Airport code API: resolve any IATA (IAH) or ICAO (KIAH) code to airport name, city, country, coordinates, elevation, and timezone — 29,000+ airports, served locally in milliseconds. For travel, logistics, and aviation agents.

Returns historical pricing data for items in a catalog archive.

Provides aggregated pricing summary data for items in a catalog.

Returns current market or appraised values for items in a catalog collection.

Premium agentic endpoint for uninitialized-storage-mcp.

Premium agentic endpoint for github-action-secret-mcp.

Premium agentic endpoint for sybil-resistance-zk-gate-mcp.

Premium agentic endpoint for factoring-yield-farmer-mcp.

Premium agentic endpoint for microgrid-island-mode-mcp.

Premium agentic endpoint for uncollateralized-loan-mcp.

Premium agentic endpoint for pue-datacenter-optimizer-mcp.

Premium agentic endpoint for 5g-core-nfv-mcp.

Premium agentic endpoint for flash-escrow-settlement-gate-mcp.

Premium agentic endpoint for helium-financial-mcp.

Premium agentic endpoint for yellowpages-directory-mcp.