--- title: Versions url: https://platform.claude.com/docs/en/api/csharp/skills/versions --- # Versions ## Create Skill Version `SkillVersion Skills.Versions.Create(parameters, cancellationToken = default)` **POST** `/v1/skills/{skill_id}/versions` Create Skill Version ### Parameters - `VersionCreateParams parameters` - `required string skillID` (path parameter) Unique identifier for the skill. The format and length of IDs may change over time. - `required IReadOnlyList files` 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. - `string workspaceID` (header parameter) 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 - `class SkillVersion` - `JsonElement Type = "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. - `required string ID` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `required DateTimeOffset CreatedAt` ISO 8601 timestamp of when the skill was created. format: date-time - `required string Description` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `required string Name` 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. - `required string SkillID` Unique identifier for the skill. The format and length of IDs may change over time. ### Example ```csharp using System; using System.Text; using Anthropic.Models.Skills.Versions; VersionCreateParams parameters = new() { SkillID = "skill_id", Files = [ Encoding.UTF8.GetBytes("Example data") ], }; var skillVersion = await client.Skills.Versions.Create(parameters); Console.WriteLine(skillVersion); ``` #### 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 `VersionListPage Skills.Versions.List(parameters, cancellationToken = default)` **GET** `/v1/skills/{skill_id}/versions` List Skill Versions ### Parameters - `VersionListParams parameters` - `required string skillID` (path parameter) Unique identifier for the skill. The format and length of IDs may change over time. - `long? limit` (query parameter) Number of results to return per page. Ranges from `1` to `1000`. Defaults to `20`. minimum: 1, maximum: 1000 - `string? page` (query parameter) Optionally set to the `next_page` token from the previous response. - `string workspaceID` (header parameter) 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 - `class SkillVersion` - `JsonElement Type = "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. - `required string ID` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `required DateTimeOffset CreatedAt` ISO 8601 timestamp of when the skill was created. format: date-time - `required string Description` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `required string Name` 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. - `required string SkillID` Unique identifier for the skill. The format and length of IDs may change over time. ### Example ```csharp using System; using Anthropic.Models.Skills.Versions; VersionListParams parameters = new() { SkillID = "skill_id" }; var page = await client.Skills.Versions.List(parameters); await foreach (var item in page.Paginate()) { Console.WriteLine(item); } ``` #### 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 `SkillVersion Skills.Versions.Retrieve(parameters, cancellationToken = default)` **GET** `/v1/skills/{skill_id}/versions/{version}` Get Skill Version ### Parameters - `VersionRetrieveParams parameters` - `required string skillID` (path parameter) Unique identifier for the skill. The format and length of IDs may change over time. - `required string version` (path parameter) 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"). - `string workspaceID` (header parameter) 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 - `class SkillVersion` - `JsonElement Type = "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. - `required string ID` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `required DateTimeOffset CreatedAt` ISO 8601 timestamp of when the skill was created. format: date-time - `required string Description` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `required string Name` 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. - `required string SkillID` Unique identifier for the skill. The format and length of IDs may change over time. ### Example ```csharp using System; using Anthropic.Models.Skills.Versions; VersionRetrieveParams parameters = new() { SkillID = "skill_id", Version = "version", }; var skillVersion = await client.Skills.Versions.Retrieve(parameters); Console.WriteLine(skillVersion); ``` #### 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 `DeletedSkillVersion Skills.Versions.Delete(parameters, cancellationToken = default)` **DELETE** `/v1/skills/{skill_id}/versions/{version}` Delete Skill Version ### Parameters - `VersionDeleteParams parameters` - `required string skillID` (path parameter) Unique identifier for the skill. The format and length of IDs may change over time. - `required string version` (path parameter) 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"). - `string workspaceID` (header parameter) 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 - `class DeletedSkillVersion` - `JsonElement Type = "skill_version_deleted"` Deleted object type. For Skill Versions, this is always `"skill_version_deleted"`. - `required string ID` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. ### Example ```csharp using System; using Anthropic.Models.Skills.Versions; VersionDeleteParams parameters = new() { SkillID = "skill_id", Version = "version", }; var deletedSkillVersion = await client.Skills.Versions.Delete(parameters); Console.WriteLine(deletedSkillVersion); ``` #### Response (200) ```json { "id": "id", "type": "skill_version_deleted" } ``` ## Domain types ### Deleted Skill Version - `class DeletedSkillVersion` - `JsonElement Type = "skill_version_deleted"` Deleted object type. For Skill Versions, this is always `"skill_version_deleted"`. - `required string ID` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. ### Skill Version - `class SkillVersion` - `JsonElement Type = "skill_version"` Object type. For Skill Versions, this is always `"skill_version"`. - `required string ID` Unique identifier for this Skill Version. The id addresses the version in paths and pins it in references. - `required DateTimeOffset CreatedAt` ISO 8601 timestamp of when the skill was created. format: date-time - `required string Description` Description of the skill version. This is extracted from the SKILL.md file in the skill upload. - `required string Name` 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. - `required string SkillID` Unique identifier for the skill. The format and length of IDs may change over time.