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

# Cross-signal correlation

> Prefill filters and time for cross-signal jumps.

```http theme={null}
GET /api/v1/web/correlation/{from_kind}/{to_kind}
```

Server-side prefill of filters and time range for `metric ↔ trace ↔ log ↔ host` jumps.

**Parameters**

| Param       | In    | Required | Notes                                             |
| ----------- | ----- | -------- | ------------------------------------------------- |
| `from_kind` | path  | ✅        | `trace` / `metric` / `log` / `host`               |
| `to_kind`   | path  | ✅        | `trace` / `metric` / `log` / `host`               |
| `ctx`       | query | ✅        | base64-url JSON blob of the source signal context |

Discover the enabled direction list with `GET /api/v1/web/correlation/providers`. Both routes
require `streams.query`, or `sys.telemetry.read` in system scope.