---
title: "Fork session"
method: POST
path: "/session/{sessionID}/fork"
---

# Fork session

`POST /session/{sessionID}/fork`

Create a new session by forking an existing session at a specific message point.

## Path parameters

- `sessionID` string, required

## Query parameters

- `directory` string

## Request body

- object
  - `messageID` string

## Response `200`

200

- Session
  - `id` string, required
  - `slug` string, required
  - `projectID` string, required
  - `directory` string, required
  - `parentID` string
  - `summary` object
    - `additions` number, required
    - `deletions` number, required
    - `files` number, required
    - `diffs` FileDiff[]
      - `file` string, required
      - `before` string, required
      - `after` string, required
      - `additions` number, required
      - `deletions` number, required
      - `status` 'added' | 'deleted' | 'modified'
  - `share` object
    - `url` string, required
  - `title` string, required
  - `version` string, required
  - `time` object, required
    - `created` number, required
    - `updated` number, required
    - `compacting` number
    - `archived` number
  - `permission` PermissionRule[]
    - `permission` string, required
    - `pattern` string, required
    - `action` 'allow' | 'deny' | 'ask', required
  - `revert` object
    - `messageID` string, required
    - `partID` string
    - `snapshot` string
    - `diff` string

## Changes

- **2026-02-02** `e5d84d7cf554` — 1 info
  - added the optional property `summary/diffs/items/status` to the response with the `200` status
- **2026-01-20** `c7ae6a68e4fb` — 1 warning
  - removed the optional property `summary/diffs/items/status` from the response with the `200` status

[Change history](https://skmtc.dev/cyberstrikeus/apis/cyberstrike/changes/session/:sessionID/fork/post.md)

---

[API](https://skmtc.dev/cyberstrikeus/apis/cyberstrike.md) · [All operations](https://skmtc.dev/cyberstrikeus/apis/cyberstrike/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/cyberstrikeus/cyberstrike/revisions/60718ff578c8/schema)