---
title: "Abort a running Dojo sim session."
method: POST
path: "/sim/{session_id}/stop"
tags: ["Dojo"]
---

# Abort a running Dojo sim session.

`POST /sim/{session_id}/stop`

## Request

- Base URL: `https://api.mnemom.ai/v1`
- URL: `https://api.mnemom.ai/v1/sim/{session_id}/stop`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-Mnemom-Api-Key`

Stops the runner loop and marks the session aborted. Idempotent. MNE-531.

## Path parameters

- `session_id` string, uuid, required

## Response `200`

Session stopped.

- object

## Other responses

- `400`: Bad request
- `401`: Authentication required
- `403`: Forbidden
- `404`: Resource not found
- `429`: Rate-limit exceeded. The global per-IP limiter (100 requests/minute, applied to every `/v1/*` route) rejected this request. Back off until the window resets — `Retry-After` carries the cooldown in seconds and `X-RateLimit-Reset` the absolute reset time.
- `500`: Server error — request was well-formed but the server failed to fulfill it. Typically a downstream dependency (DB / RPC / external API) returned an unexpected error.

---

[API](https://skmtc.dev/mnemom/apis/mnemom-api.md) · [All operations](https://skmtc.dev/mnemom/apis/mnemom-api/llms.txt) · [OpenAPI document](https://skmtc.dev/mnemom/apis/mnemom-api/revisions/274b7a6ea182?raw)