Proxy the corresponding X API v2 endpoint. x402 authorizes up to $10.00; successful responses settle at X's public non-owned per-resource/per-action price.

Forward and reverse geocoding via OpenStreetMap Nominatim. Convert addresses to coordinates or coordinates to addresses.

Get paper citations and metadata via Crossref. Search by topic or look up by DOI.

Search federal court opinions and cases via CourtListener / RECAP Archive.

ECB exchange rates for EUR against major currencies, or ECB key interest rates.

PubMed/NCBI biomedical research — 34M+ citations with full abstracts.

IMF GDP & macroeconomic indicators — GDP growth, inflation, government debt, current account, GDP per capita for 180+ countries.

🔭 The Stargazer's Wagon — your daily horoscope. Your wallet is your star sign (one of 12, forever); the reading is the same all day and new each tomorrow, in a mood that shifts. $0.01 once a day; re-reads are free.

AI/ML research papers from HuggingFace — trending daily papers or keyword search. Filter by date or query.

Get detailed information for a specific Polymarket prediction market including prices, outcomes, and trading volume.

Get 8-K material event filings — M&A activity, leadership changes, earnings releases, and other material disclosures.

Look up researcher and scientist profiles from OpenAlex. Filter by name and institution.

Browse Polymarket prediction markets. Filter by category (crypto, politics, sports, economics, science, entertainment, pop-culture), search by keyword, or set limit.

OECD country comparison data — long-term interest rates, trade balance, and CPI for G7 and major economies.

List recent SEC filings for any public company. Filter by form type (10-K, 10-Q, 8-K, 4, etc).

Get insider trading activity (Form 4) — executive and director stock purchases and sales.

Get structured financial data from SEC XBRL filings — revenue, net income, EPS, assets, and more.

Company fundamentals from SEC EDGAR XBRL filings. Revenue, net income, EPS, assets, liabilities, and equity for any publicly-traded company.

Get x402 market price benchmarks for data APIs

Compare paid MCP tool endpoint prices by category