--- title: Versions url: https://platform.claude.com/docs/en/api/http/skills/versions --- # Versions ## Create Skill Version **POST** `/v1/skills/{skill_id}/versions` Create Skill Version ### Path parameters - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-workspace-id": optional string` Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Body parameters (form-data) - `files: array of string` Files to upload for the skill. All files must be in the same top-level directory and must include a SKILL.md file at the root of that directory. ### Returns - `SkillVersion object` - `type: "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. default: skill_version - `id: string` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `created_at: string` ISO 8601 timestamp of when the skill was created. format: date-time - `description: string` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `name: string` The Skill's immutable kebab-case slug, set at creation from the first upload's SKILL.md frontmatter `name` (or its enclosing directory). Every later upload must resolve to the same value. Also the top-level directory of the Skill's mounted files and the base name of a downloaded archive. - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. ### Example ```bash curl https://api.anthropic.com/v1/skills/$SKILL_ID/versions \ -H 'Content-Type: multipart/form-data' \ -H 'anthropic-version: 2023-06-01' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" \ -F 'files[]=@/path/to/file' ``` #### Response (200) ```json { "id": "id", "created_at": "2024-10-30T23:58:27.427722Z", "description": "description", "name": "name", "skill_id": "skill_01JAbcdefghijklmnopqrstuvw", "type": "skill_version" } ``` ## List Skill Versions **GET** `/v1/skills/{skill_id}/versions` List Skill Versions ### Path parameters - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. ### Query parameters - `limit: optional number` Number of results to return per page. Ranges from `1` to `1000`. Defaults to `20`. default: 20, minimum: 1, maximum: 1000 - `page: optional string` Optionally set to the `next_page` token from the previous response. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-workspace-id": optional string` Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `data: array of SkillVersion` List of skills. - `type: "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. default: skill_version - `id: string` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `created_at: string` ISO 8601 timestamp of when the skill was created. format: date-time - `description: string` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `name: string` The Skill's immutable kebab-case slug, set at creation from the first upload's SKILL.md frontmatter `name` (or its enclosing directory). Every later upload must resolve to the same value. Also the top-level directory of the Skill's mounted files and the base name of a downloaded archive. - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. - `next_page: string or null` Token for fetching the next page of results. If `null`, there are no more results available. Pass this value to the `page` parameter in the next request to get the next page. ### Example ```bash curl https://api.anthropic.com/v1/skills/$SKILL_ID/versions \ -H 'anthropic-version: 2023-06-01' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "data": [ { "id": "id", "created_at": "2024-10-30T23:58:27.427722Z", "description": "description", "name": "name", "skill_id": "skill_01JAbcdefghijklmnopqrstuvw", "type": "skill_version" } ], "next_page": "next_page" } ``` ## Get Skill Version **GET** `/v1/skills/{skill_id}/versions/{version}` Get Skill Version ### Path parameters - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. - `version: string` Identifies the skill version: a version ID, or the literal `latest` for the skill's most recent version. Requests carrying the `skills-2025-10-02` beta header address versions by their Unix epoch timestamp instead (e.g., "1759178010641129"). ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-workspace-id": optional string` Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `SkillVersion object` - `type: "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. default: skill_version - `id: string` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `created_at: string` ISO 8601 timestamp of when the skill was created. format: date-time - `description: string` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `name: string` The Skill's immutable kebab-case slug, set at creation from the first upload's SKILL.md frontmatter `name` (or its enclosing directory). Every later upload must resolve to the same value. Also the top-level directory of the Skill's mounted files and the base name of a downloaded archive. - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. ### Example ```bash curl https://api.anthropic.com/v1/skills/$SKILL_ID/versions/$VERSION \ -H 'anthropic-version: 2023-06-01' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "id": "id", "created_at": "2024-10-30T23:58:27.427722Z", "description": "description", "name": "name", "skill_id": "skill_01JAbcdefghijklmnopqrstuvw", "type": "skill_version" } ``` ## Delete Skill Version **DELETE** `/v1/skills/{skill_id}/versions/{version}` Delete Skill Version ### Path parameters - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time. - `version: string` Identifies the skill version by its version ID. Requests carrying the `skills-2025-10-02` beta header address versions by their Unix epoch timestamp instead (e.g., "1759178010641129"). ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-workspace-id": optional string` Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `DeletedSkillVersion object` - `type: "skill_version_deleted"` Deleted object type. For Skill Versions, this is always `"skill_version_deleted"`. default: skill_version_deleted - `id: string` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. ### Example ```bash curl https://api.anthropic.com/v1/skills/$SKILL_ID/versions/$VERSION \ -X DELETE \ -H 'anthropic-version: 2023-06-01' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "id": "id", "type": "skill_version_deleted" } ``` ## Domain types ### Deleted Skill Version - `DeletedSkillVersion object` - `type: "skill_version_deleted"` Deleted object type. For Skill Versions, this is always `"skill_version_deleted"`. default: skill_version_deleted - `id: string` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. ### Skill Version - `SkillVersion object` - `type: "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. default: skill_version - `id: string` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `created_at: string` ISO 8601 timestamp of when the skill was created. format: date-time - `description: string` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `name: string` The Skill's immutable kebab-case slug, set at creation from the first upload's SKILL.md frontmatter `name` (or its enclosing directory). Every later upload must resolve to the same value. Also the top-level directory of the Skill's mounted files and the base name of a downloaded archive. - `skill_id: string` Unique identifier for the skill. The format and length of IDs may change over time.