> ## 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.

# Get skill version

> Get one specific skill version with references.



## OpenAPI

````yaml https://app.cotool.ai/api/docs/openapi.json get /api/skills/{skillId}/versions/{versionId}
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/skills/{skillId}/versions/{versionId}:
    get:
      tags:
        - Skills
      summary: Get skill version
      description: Get one specific skill version with references.
      parameters:
        - in: path
          name: skillId
          description: Unique identifier for the skill
          schema:
            type: string
            format: uuid
            description: Unique identifier for the skill
          required: true
        - in: path
          name: versionId
          description: Unique identifier for the skill version
          schema:
            type: string
            format: uuid
            description: Unique identifier for the skill version
          required: true
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                    format: uuid
                    description: Unique identifier for the skill version
                  skillId:
                    type: string
                    format: uuid
                    description: Parent skill ID
                  version:
                    type: integer
                    exclusiveMinimum: 0
                    description: Monotonic version number for the skill
                  createdByUserId:
                    type:
                      - string
                      - 'null'
                    description: User who created this version, if available
                  createdAt:
                    type: string
                    description: Timestamp when this version was created
                  instructionPrompt:
                    type: string
                    description: Instruction content for this specific version
                  requiredTools:
                    type: array
                    items:
                      type: string
                    description: Required tools snapshot for this specific version
                  references:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                          format: uuid
                          description: Unique identifier for the reference file record
                        skillVersionId:
                          type: string
                          format: uuid
                          description: Version ID this reference belongs to
                        filename:
                          type: string
                          description: >-
                            Relative path from skill root (for example
                            references/guide.md)
                        directory:
                          type: string
                          enum:
                            - references
                            - assets
                            - scripts
                          description: Top-level skill directory where this file resides
                        sizeBytes:
                          type: integer
                          minimum: 0
                          description: UTF-8 byte size of the file content
                        content:
                          type: string
                          description: >-
                            Optional file content (included in version detail /
                            export flows)
                        createdAt:
                          type: string
                          description: Timestamp when this file was stored
                      required:
                        - id
                        - skillVersionId
                        - filename
                        - directory
                        - sizeBytes
                    description: References attached to this specific version
                required:
                  - id
                  - skillId
                  - version
                  - createdByUserId
                  - createdAt
                  - instructionPrompt
                  - requiredTools
                  - references
        '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/skills/:skillId/versions/:versionId" \
              -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`

````