> ## Documentation Index
> Fetch the complete documentation index at: https://docs.correl8.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect overview

> Connect your agent via MCP — the standard integration path

Connect Correl8 as an MCP server. Add the [system prompt snippet](/essentials/agent-prompt) so your agent calls **`get_correl8_guidelines(user_id=…)`** once per conversation, then calls **`post_observations`** when the loaded rules apply.

There is no tool to list observations back — review data in the app.

## Authentication

```
Authorization: ApiKey c8.xxx
```

Create keys in **Settings**. Project ID and MCP URL are in **Settings → Details**.

## Custom integration (REST API)

Use the REST API only if MCP is not an option:

```
POST /v1/project/{project_id}/observations/
```

Request body: `{ "user_id": "…", "interaction_id": "…", "user_sentiment": "…", "observations": [ … ] }` — one user, thread, and sentiment per call.

See [Advanced ingestion](/essentials/overview) and the [API reference](/api-reference/introduction).