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Every endpoint lives under a single base URL and one API key. Pick a section below, or expand a folder in the sidebar to browse endpoints directly.
Every request needs an X-API-KEY header — see Authentication to generate one. Responses are JSON. Errors follow a shared shape documented in Error Codes.

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Sections

Market Data

Coin prices, charts, tickers, exchange rates, and fiat currencies. Plus market insights, news, NFT collections, and token risk scores.

Wallets & Portfolios

Balances, transactions, P/L, and DeFi positions for any address across 120+ chains. Exchange connections and user portfolio analytics.

Prediction Markets

Polymarket markets, events, order books, price history, and trader analytics.

Account

Your remaining credits and the current API status.

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Before you start

Authentication

Generate a key and send it on every request.

Rate Limits

Per-plan request ceilings and what a 429 means.

Credit Multipliers

How much each endpoint costs against your quota.
Building an AI agent? The MCP server exposes this same data as tools, and x402 lets you pay per request with no account at all.