authentik/website/developer-docs/api/websocket.md

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Websocket API

authentik has two different WebSocket endpoints, one is used for web-based clients to get real-time updates, and the other is used for outposts to report their healthiness.

Web /ws/client/

:::info Authentication is done using the session, so make sure to send the Cookie header. :::

All messages have a common field called message_type to discern the type of message.

message type:

This type is used when the backend has a notice to show to the user. A full payload looks like:

{
    "message_type": "message",
    "level": "error" | "warning" | "success" | "info",
    "tags": "",
    "message": "a message",
}

Outpost /ws/outpost/<outpost-uuid>/

:::info Authentication is done via the Authorization header, same as the regular API. You must send a valid token with a Bearer prefix. :::

All messages have two fields, instruction and args. Instruction is any number from this list:

• 0: ACK, simply acknowledges the previous message
• 1: HELLO, used for monitoring and regularly sent by outposts
• 2: TRIGGER_UPDATE, sent by authentik to trigger a reload of the configuration

Arguments for these messages vary, all though these common args are always sent:

• args['uuid']: A unique UUID generated on startup of an outpost, used to uniquely identify it.

These fields are only sent for HELLO instructions:

• args['version']: Version of the outpost
• args['buildHash']: Build hash of the outpost, when available