Authorization: Bearer <token>). For tracking markets, read the chain directly: see Reading markets. A public, keyless read API is on our list.
Errors
Errors come back as{ "error": "<message>" } with the HTTP status: 400 bad input, 401 not signed in, 403 not approved, 404 not found, 429 over the limit, 502 an upstream (agent, Hyperliquid) failed.