> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cotool.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# List threat model version history

> List the full threat model version history for the organization.



## OpenAPI

````yaml https://app.cotool.ai/api/docs/openapi.json get /api/threat-model/versions
openapi: 3.1.0
info:
  title: Cotool API
  version: 1.0.0
  description: >-
    # Cotool API Documentation


    The Cotool API allows you to interact with the Cotool platform
    programmatically, enabling you to build powerful integrations and automate
    your workflows.


    ## Getting an API Key


    Follow these steps to generate your API key:


    1. **Log in** to the Cotool web interface

    2. **Navigate** to `/settings/api-keys`

    3. **Click** "Generate Key"

    4. **Copy and store** your API key securely ⚠️ *It won't be shown again*


    ## API Key Authentication


    For programmatic access and integrations, use your API key with the
    Authorization header:


    ```http

    Authorization: Bearer your_api_key_here

    ```


    ```bash

    curl -X GET "https://app.cotool.ai/api/endpoint" \
      -H "Authorization: Bearer your_api_key_here" \
      -H "Content-Type: application/json"
    ```
servers:
  - url: https://app.cotool.ai
    description: Production server
security:
  - ApiKeyAuth: []
paths:
  /api/threat-model/versions:
    get:
      tags:
        - ThreatModel
      summary: List threat model version history
      description: List the full threat model version history for the organization.
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  versions:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                          format: uuid
                          description: Unique identifier for this threat model version
                        version:
                          type: integer
                          exclusiveMinimum: 0
                          description: Monotonic version number
                        isCurrent:
                          type: boolean
                          description: >-
                            Whether this version is currently active for the
                            organization
                        authorType:
                          type: string
                          enum:
                            - ai
                            - user
                          description: Whether this version was created by AI or a human
                        authorId:
                          type:
                            - string
                            - 'null'
                          format: uuid
                          description: >-
                            User ID for human edits, or null for AI-authored
                            versions
                        modelAlias:
                          type:
                            - string
                            - 'null'
                          description: >-
                            Model alias that produced this version, or null for
                            human edits
                        changeDescription:
                          type:
                            - string
                            - 'null'
                          description: Short description of why this version was created
                        createdAt:
                          type: string
                          description: Timestamp when this version was created
                      required:
                        - id
                        - version
                        - isCurrent
                        - authorType
                        - authorId
                        - modelAlias
                        - changeDescription
                        - createdAt
                    description: Full version history for this threat model
                  recentVersionWindow:
                    type: integer
                    exclusiveMinimum: 0
                    description: >-
                      How many recent versions threat model logic typically
                      needs to look at
                required:
                  - versions
                  - recentVersionWindow
        '400':
          description: Bad request — input validation failed or the request was malformed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationError'
        '401':
          description: Unauthorized — missing or invalid API key / session
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden — the authenticated user lacks the required permissions
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PermissionError'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      x-codeSamples:
        - lang: shell
          label: cURL
          source: |-
            curl -X GET "https://app.cotool.ai/api/threat-model/versions" \
              -H "Authorization: Bearer YOUR_API_KEY" \
              -H "Content-Type: application/json"
components:
  schemas:
    ValidationError:
      type: object
      properties:
        error:
          type: string
          description: Error message describing what went wrong
        issues:
          type: array
          description: >-
            Detailed validation issues, present when request or response schema
            validation fails
          items:
            type: object
            additionalProperties: true
      required:
        - error
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message describing what went wrong
      required:
        - error
    PermissionError:
      type: object
      properties:
        error:
          type: string
          description: Error message describing what went wrong
        missingPerms:
          type: array
          description: Permissions the authenticated user is missing for this operation
          items:
            type: string
      required:
        - error
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: >-
        API Key authentication for programmatic access. Include your API key in
        the Authorization header as: `Bearer your_api_key_here`

````