---
title: "Delete messages after marker"
method: DELETE
path: "/api/chat/sessions/{session_id}/messages"
tags: ["Chat"]
---

# Delete messages after marker

`DELETE /api/chat/sessions/{session_id}/messages`

## Path parameters

- `session_id` string, required

## Query parameters

- `after` string, required
- `inclusive` boolean

## Response `204`

No Content

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `500` — Internal Server Error

## Changes

- **2026-05-17** `281dd086d392` — 1 info
  - api operation id `delete_api_chat_sessions_session_id_messages` removed and replaced with `delete_api__chat__sessions__session_id__messages`
- **2026-02-17** `43f602c6b7d5` — 1 info
  - api operation id `delete_api__chat__sessions__session_id__messages` removed and replaced with `delete_api_chat_sessions_session_id_messages`

[Change history](https://skmtc.dev/intelligencedev/apis/manifold-api/changes/api/chat/sessions/:session_id/messages/delete.md)

---

[API](https://skmtc.dev/intelligencedev/apis/manifold-api.md) · [All operations](https://skmtc.dev/intelligencedev/apis/manifold-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/intelligencedev/manifold-api/revisions/1b74eae59b49/schema)