API Reference
One page per endpoint. Each page carries the typed signature and a runnable sample in Rust, Python, TypeScript, C++, and HTTP — pick your language once in the tab bar and every page follows — plus the parameter table, the response schema, and (where a captured response exists) example output rows.
| Group | Endpoints |
|---|---|
| Stock | List, snapshots, history (EOD / OHLC / trades / quotes / trade-quote), at-time lookups. |
| Option | Chain discovery, snapshots, history, Greeks (snapshot, interval, per-trade, EOD), at-time lookups. |
| Index | List, snapshots, price history, at-time lookups. |
| Calendar | Trading-calendar status by day and year. |
| Interest Rate | Rate series history. |
| Flat Files | Whole-universe daily archives — every option contract or stock for a date in one call (option trade-quote / open-interest / EOD, stock trade-quote / EOD). |
Per-contract endpoints have one page each; flat files are whole-file archives, so they share a single Flat Files page rather than a page per dataset.
Conventions shared by every endpoint — identifiers, units, timestamps — live in Symbology & Contract Identity. Tier badges on each page map to Subscriptions.
Connection setup is one Getting Started away; every sample on these pages assumes a connected client named client and runs as-is with only creds.txt present.