---
title: "Start Case Agent Session Interaction Backfill"
method: POST
path: "/admin/maintenance/case-agent-session-interactions/backfill"
tags: ["admin:maintenance"]
---

# Start Case Agent Session Interaction Backfill

`POST /admin/maintenance/case-agent-session-interactions/backfill`

## Request

- Base URL: `https://platform.tracecat.com/api`
- URL: `https://platform.tracecat.com/api/admin/maintenance/case-agent-session-interactions/backfill`
- Auth: API key in cookie `fastapiusersauth`

Start or join the durable historical case-mutation backfill.

## Response `202`

Successful Response

- CaseAgentSessionInteractionBackfillStartResponse: Response after starting or joining the durable backfill.
  - `operation_id` string, uuid, required

---

[API](https://skmtc.dev/tracecat/apis/tracecat-api.md) - [All operations](https://skmtc.dev/tracecat/apis/tracecat-api/llms.txt) - [OpenAPI document](https://skmtc.dev/tracecat/apis/tracecat-api/revisions/2efdda25045f?raw)