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

# Drifts

> See how a discovered capability changed over time.

A Drift compares the latest Discovery with an earlier Discovery.

## Example

Previous input schema:

```text theme={null}
get_forecast(latitude, longitude)
```

Current input schema:

```text theme={null}
get_forecast(latitude, longitude, units)
```

GroundForge records a Drift because the input schema gained `units`.

A Drift may represent:

* a capability that was added;
* a capability that was removed;
* an input or output schema that changed;
* descriptive metadata that changed.

A Drift does not update Gateway rules automatically. It tells you that rules, integrations, or documentation may need review.

## CLI example

```bash theme={null}
gforge agents drifts <agent-id>
```

See [Discovery](/concepts/discovery), [Observations](/concepts/observations), and [Gateway Rules](/concepts/governance).


## Related topics

- [List Drifts](/api-reference/endpoints/list-drifts.md)
- [Search Drifts](/api-reference/endpoints/search-drifts.md)
- [List Agent Drifts](/api-reference/endpoints/agents/list-agent-drifts.md)
- [Discovery](/concepts/discovery.md)