---
title: "Restart a managed-agent session cleanly in a sub DAG-run"
method: POST
path: "/dag-runs/{name}/{dagRunId}/sub-dag-runs/{subDAGRunId}/steps/{stepName}/agent-session/restart"
tags: ["dag-runs"]
---

# Restart a managed-agent session cleanly in a sub DAG-run

`POST /dag-runs/{name}/{dagRunId}/sub-dag-runs/{subDAGRunId}/steps/{stepName}/agent-session/restart`

## Request

- Base URL: `http://localhost/api/v1`
- URL: `http://localhost/api/v1/dag-runs/{name}/{dagRunId}/sub-dag-runs/{subDAGRunId}/steps/{stepName}/agent-session/restart`
- Auth: one of:
  - HTTP bearer
  - HTTP basic
  - none

## Path parameters

- `name` string, regex, required: Name of the DAG
- `dagRunId` string, required: Unique identifier for the DAG-run. The special value 'latest' can be used to reference the most recent DAG-run.
- `subDAGRunId` string, required
- `stepName` string, required

## Query parameters

- `remoteNode` string

## Response `200`

Clean session restart queued

- AgentSessionRestartResponse
  - `dagRunId` string, required
  - `stepName` string, required
  - `generation` integer, required
  - `resumed` boolean, required
  - `subDAGRunId` string

## Other responses

- `400`: Step does not have a restartable managed-agent session
- `404`: Sub DAG-run or step not found
- `409`: Managed session state changed
- `default`: Generic error response

## Changes

> 208 revisions in range; 1 not diffed.

- **2026-08-16** (v1) `f8982f33e540`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/dagucloud/apis/dagu/changes/dag-runs/:name/:dagRunId/sub-dag-runs/:subDAGRunId/steps/:stepName/agent-session/restart/post.md)

---

[API](https://skmtc.dev/dagucloud/apis/dagu.md) - [All operations](https://skmtc.dev/dagucloud/apis/dagu/llms.txt) - [OpenAPI document](https://skmtc.dev/dagucloud/apis/dagu/revisions/742c8ecb39ce?raw)