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    Using the API

    OverviewClient SDKsBeta headersErrors
    Messages
    Create a Message
    Count tokens in a Message
    Batches
    Create a Message Batch
    Retrieve a Message Batch
    List Message Batches
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    Get a Model
    Beta
    Models
    List Models
    Get a Model
    Messages
    Create a Message
    Count tokens in a Message
    Batches
    Create a Message Batch
    Retrieve a Message Batch
    List Message Batches
    Cancel a Message Batch
    Delete a Message Batch
    Retrieve Message Batch results
    Files
    Upload File
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    Skills
    Create Skill
    List Skills
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    Versions
    Create Skill Version
    List Skill Versions
    Get Skill Version
    Delete Skill Version
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    Completions
    Create a Text Completion

    Support & configuration

    Rate limitsService tiersVersionsIP addressesSupported regionsOpenAI SDK compatibility
    Console
    List Skill Versions
    get/v1/skills/{skill_id}/versions?beta=true

    List Skill Versions

    Path ParametersExpand Collapse
    skill_id: string

    Unique identifier for the skill.

    The format and length of IDs may change over time.

    Query ParametersExpand Collapse
    limit: optional number

    Number of items to return per page.

    Defaults to 20. Ranges from 1 to 1000.

    page: optional string

    Optionally set to the next_page token from the previous response.

    Header ParametersExpand Collapse
    "anthropic-beta": optional array of AnthropicBeta

    Optional header to specify the beta version(s) you want to use.

    Accepts one of the following:
    UnionMember0 = string
    UnionMember1 = "message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 15 more
    Accepts one of the following:
    "message-batches-2024-09-24"
    "prompt-caching-2024-07-31"
    "computer-use-2024-10-22"
    "computer-use-2025-01-24"
    "pdfs-2024-09-25"
    "token-counting-2024-11-01"
    "token-efficient-tools-2025-02-19"
    "output-128k-2025-02-19"
    "files-api-2025-04-14"
    "mcp-client-2025-04-04"
    "dev-full-thinking-2025-05-14"
    "interleaved-thinking-2025-05-14"
    "code-execution-2025-05-22"
    "extended-cache-ttl-2025-04-11"
    "context-1m-2025-08-07"
    "context-management-2025-06-27"
    "model-context-window-exceeded-2025-08-26"
    "skills-2025-10-02"
    ReturnsExpand Collapse
    data: array of object { id, created_at, description, 5 more }

    List of skill versions.

    id: string

    Unique identifier for the skill version.

    The format and length of IDs may change over time.

    created_at: string

    ISO 8601 timestamp of when the skill version was created.

    description: string

    Description of the skill version.

    This is extracted from the SKILL.md file in the skill upload.

    directory: string

    Directory name of the skill version.

    This is the top-level directory name that was extracted from the uploaded files.

    name: string

    Human-readable name of the skill version.

    This is extracted from the SKILL.md file in the skill upload.

    skill_id: string

    Identifier for the skill that this version belongs to.

    type: string

    Object type.

    For Skill Versions, this is always "skill_version".

    version: string

    Version identifier for the skill.

    Each version is identified by a Unix epoch timestamp (e.g., "1759178010641129").

    has_more: boolean

    Indicates if there are more results in the requested page direction.

    next_page: string

    Token to provide in as page in the subsequent request to retrieve the next page of data.

    List Skill Versions
    cURL
    curl https://api.anthropic.com/v1/skills/$SKILL_ID/versions?beta=true \
        -H "X-Api-Key: $ANTHROPIC_API_KEY"
    {
      "data": [
        {
          "id": "skillver_01JAbcdefghijklmnopqrstuvw",
          "created_at": "2024-10-30T23:58:27.427722Z",
          "description": "A custom skill for doing something useful",
          "directory": "my-skill",
          "name": "my-skill",
          "skill_id": "skill_01JAbcdefghijklmnopqrstuvw",
          "type": "type",
          "version": "1759178010641129"
        }
      ],
      "has_more": true,
      "next_page": "page_MjAyNS0wNS0xNFQwMDowMDowMFo="
    }
    Returns Examples
    {
      "data": [
        {
          "id": "skillver_01JAbcdefghijklmnopqrstuvw",
          "created_at": "2024-10-30T23:58:27.427722Z",
          "description": "A custom skill for doing something useful",
          "directory": "my-skill",
          "name": "my-skill",
          "skill_id": "skill_01JAbcdefghijklmnopqrstuvw",
          "type": "type",
          "version": "1759178010641129"
        }
      ],
      "has_more": true,
      "next_page": "page_MjAyNS0wNS0xNFQwMDowMDowMFo="
    }
    © 2025 ANTHROPIC PBC

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    Products

    • Claude
    • Claude Code
    • Max plan
    • Team plan
    • Enterprise plan
    • Download app
    • Pricing
    • Log in

    Features

    • Claude and Slack
    • Claude in Excel

    Models

    • Opus
    • Sonnet
    • Haiku

    Solutions

    • AI agents
    • Code modernization
    • Coding
    • Customer support
    • Education
    • Financial services
    • Government
    • Life sciences

    Claude Developer Platform

    • Overview
    • Developer docs
    • Pricing
    • Amazon Bedrock
    • Google Cloud’s Vertex AI
    • Console login

    Learn

    • Blog
    • Catalog
    • Courses
    • Connectors
    • Customer stories
    • Engineering at Anthropic
    • Events
    • Powered by Claude
    • Service partners
    • Startups program

    Company

    • Anthropic
    • Careers
    • Economic Futures
    • Research
    • News
    • Responsible Scaling Policy
    • Security and compliance
    • Transparency

    Help and security

    • Availability
    • Status
    • Support center

    Terms and policies

    • Privacy policy
    • Responsible disclosure policy
    • Terms of service: Commercial
    • Terms of service: Consumer
    • Usage policy
    © 2025 ANTHROPIC PBC