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

# Get Activity

> Get one Activity Center event with timeline and rule detail

Return the full activity timeline and per-rule detail for one Activity Center
event. Cross-customer access returns `404`.

## Path Parameters

<ParamField path="activity_id" type="string" required>
  Activity identifier from [List Activities](/api-reference/activities/list-activities)
</ParamField>

## Response

Includes all list-summary fields, plus:

<ResponseField name="endpoint" type="string">
  Originating API endpoint when available
</ResponseField>

<ResponseField name="request_id" type="string">
  Request correlation ID when available
</ResponseField>

<ResponseField name="rules" type="array">
  Full rule detail including `snippet`, `suggested_text`, and `fix_note`
</ResponseField>

<ResponseField name="timeline" type="array">
  Ordered steps with `step` and `at` (ISO 8601)
</ResponseField>

## Errors

| Status | Meaning                                    |
| ------ | ------------------------------------------ |
| `404`  | Not found, including cross-customer access |