# CrossTrade API

> Programmatic control of NinjaTrader 8 via REST and WebSocket. Place orders,
> manage positions, stream quotes, run strategies — from any language.

## Resources for AI agents

- [Full reference (llms-full.txt)](https://app.crosstrade.io/v1/api/llms-full.txt) — every endpoint, parameters, body shapes, examples, in one file
- [OpenAPI 3.1 spec (JSON)](https://app.crosstrade.io/v1/api/openapi.json) — machine-readable API surface
- [OpenAPI 3.1 spec (YAML)](https://app.crosstrade.io/v1/api/openapi.yaml) — same, YAML
- [Endpoint catalog (JSON)](https://app.crosstrade.io/v1/api/_endpoints) — flat list, easier to grep

## Documentation

- [API overview](https://crosstrade.io/docs/api/overview)
- [Authentication](https://crosstrade.io/docs/api/authentication)
- [Rate limiting](https://crosstrade.io/docs/api/rate-limiting)
- [WebSocket API](https://crosstrade.io/docs/api/websocket-api)
- [AI-assisted development](https://crosstrade.io/docs/api/ai-assisted-development)

## Quick reference

- Base URL: `https://app.crosstrade.io`
- Auth header: `Authorization: Bearer <token>`
- All paths under `/v1/api/...` — there is no `/api/...` prefix
- All responses follow `{"success": true|false, "error": "<code>"?, "data": ...?}`
- Rate limit: 180 req/min per user, 20-burst
- Path style is PascalCase resources nested under `/accounts/{account}/...`