> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.immix.xyz/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.immix.xyz/_mcp/server.

# Welcome

Immix is a trading platform for organisations. It holds your organisation's venue credentials,
accounts and policies under dual control, places your orders at the venues it connects to, and
streams those venues' market data. This portal documents its API.

#### [Quickstart](/guides/quickstart)

Connect to the market-data socket, authenticate, and stream trades.

#### [Authentication](/guides/authentication)

One bearer token for both APIs, and how the platform admits you.

#### [Concepts](/guides/concepts)

Principals, capabilities, maker-checker, positions and versions, money.

#### [REST API guide](/guides/rest-api-guide)

The REST API's rules in full, section by section.

## The APIs

| API                   | What it carries                                                                                                                                                                 | Reference                                                    |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------ |
| Market Data WebSocket | One connection, many topics: trades, L2 order books, top of book, mark prices, funding, open interest, index prices, candlesticks, tickers, and books you compose across venues | [Market Data WebSocket](/api-reference/market-data/overview) |
| REST API              | Your organisation's users and their capabilities, venue credentials, accounts and their balances, addresses, portfolios, policies, and the orders it places                     | [REST API](/api-reference/rest-api)                          |
| Trading WebSocket     | One session to place and cancel orders and to follow your orders, executions, account balances, accounts, credentials and venue capabilities. No environment serves it yet      | [Trading WebSocket](/api-reference/trading/overview)         |

## Access

The API is in private preview. Immix onboards organisations one at a time, and onboarding gives
you your organisation's credentials and the endpoints you may use.

The references on this portal are generated from the contract documents each platform release
publishes — nothing in them is written by hand. The [Changelog](/changelog/overview) names the
release this portal was built from and the version of each API.