---
title: Create Skill
url: https://platform.claude.com/docs/en/api/csharp/beta/skills/create
---

# Create Skill

`BetaSkill Beta.Skills.Create(parameters, cancellationToken = default)`

**POST** `/v1/skills`

Create Skill

## Parameters

- `SkillCreateParams parameters`

  - `required IReadOnlyList<BinaryContent> 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? displayName`

    Human-readable, single-line label for the Skill. Maximum 255 characters.
    Always set: derived from the SKILL.md frontmatter `name` when omitted at
    creation. Not unique.

  - `IReadOnlyList<AnthropicBeta> betas` (header parameter)

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

    - `MessageBatches2024_09_24("message-batches-2024-09-24")`

    - `PromptCaching2024_07_31("prompt-caching-2024-07-31")`

    - `ComputerUse2024_10_22("computer-use-2024-10-22")`

    - `ComputerUse2025_01_24("computer-use-2025-01-24")`

    - `Pdfs2024_09_25("pdfs-2024-09-25")`

    - `TokenCounting2024_11_01("token-counting-2024-11-01")`

    - `TokenEfficientTools2025_02_19("token-efficient-tools-2025-02-19")`

    - `Output128k2025_02_19("output-128k-2025-02-19")`

    - `FilesApi2025_04_14("files-api-2025-04-14")`

    - `McpClient2025_04_04("mcp-client-2025-04-04")`

    - `McpClient2025_11_20("mcp-client-2025-11-20")`

    - `DevFullThinking2025_05_14("dev-full-thinking-2025-05-14")`

    - `InterleavedThinking2025_05_14("interleaved-thinking-2025-05-14")`

    - `CodeExecution2025_05_22("code-execution-2025-05-22")`

    - `ExtendedCacheTtl2025_04_11("extended-cache-ttl-2025-04-11")`

    - `Context1m2025_08_07("context-1m-2025-08-07")`

    - `ContextManagement2025_06_27("context-management-2025-06-27")`

    - `ModelContextWindowExceeded2025_08_26("model-context-window-exceeded-2025-08-26")`

    - `Skills2025_10_02("skills-2025-10-02")`

    - `FastMode2026_02_01("fast-mode-2026-02-01")`

    - `Output300k2026_03_24("output-300k-2026-03-24")`

    - `UserProfiles2026_03_24("user-profiles-2026-03-24")`

    - `UserProfiles2026_08_18("user-profiles-2026-08-18")`

    - `UserProfiles2026_09_04("user-profiles-2026-09-04")`

    - `AdvisorTool2026_03_01("advisor-tool-2026-03-01")`

    - `ManagedAgents2026_04_01("managed-agents-2026-04-01")`

    - `CacheDiagnosis2026_04_07("cache-diagnosis-2026-04-07")`

    - `Dreaming2026_04_21("dreaming-2026-04-21")`

    - `ThinkingTokenCount2026_05_13("thinking-token-count-2026-05-13")`

    - `ServerSideFallback2026_06_01("server-side-fallback-2026-06-01")`

    - `ServerSideFallback2026_07_01("server-side-fallback-2026-07-01")`

    - `FallbackCredit2026_06_01("fallback-credit-2026-06-01")`

    - `FallbackCredit2026_07_01("fallback-credit-2026-07-01")`

    - `AgentMemory2026_07_22("agent-memory-2026-07-22")`

    - `MidConversationToolChanges2026_07_01("mid-conversation-tool-changes-2026-07-01")`

    - `Compact2026_01_12("compact-2026-01-12")`

    - `ComputerUse2025_11_24("computer-use-2025-11-24")`

    - `McpTunnels2026_06_22("mcp-tunnels-2026-06-22")`

    - `StructuredOutputs2025_11_13("structured-outputs-2025-11-13")`

    - `TaskBudgets2026_03_13("task-budgets-2026-03-13")`

    - `ThinkingDisplayUpdates2026_08_18("thinking-display-updates-2026-08-18")`

    - `CEUserManagement2026_07_13("ce-user-management-2026-07-13")`

    - `MidConversationOutputConfig2026_07_01("mid-conversation-output-config-2026-07-01")`

    - `ThinkingBindingControls2026_08_01("thinking-binding-controls-2026-08-01")`

    - `MidConversationSystemClearAt2026_08_21("mid-conversation-system-clear-at-2026-08-21")`

    - `Compact2026_09_04("compact-2026-09-04")`

    - `InlineTools2026_09_15("inline-tools-2026-09-15")`

    - `McpClient2026_09_15("mcp-client-2026-09-15")`

    - `CEPlugins2026_09_01("ce-plugins-2026-09-01")`

    - `SpendLimitReads2026_09_26("spend-limit-reads-2026-09-26")`

    - `TelemetryDestinations2026_08_11("telemetry-destinations-2026-08-11")`

    - `Webhooks2026_10_07("webhooks-2026-10-07")`

    - `MessageThreads2026_08_12("message-threads-2026-08-12")`

    - `AnalyticsUsageCost2026_08_24("analytics-usage-cost-2026-08-24")`

    - `ExperimentalClaudeTag2026_10_21("experimental-claude-tag-2026-10-21")`

  - `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 BetaSkill`

  - `JsonElement Type = "skill"`

    Object type.

    For Skills, this is always `"skill"`.

  - `required string ID`

    Unique identifier for the skill.

    The format and length of IDs may change over time.

  - `required DateTimeOffset CreatedAt`

    ISO 8601 timestamp of when the skill was created.

    format: date-time

  - `required string DisplayName`

    Human-readable, single-line label for the Skill. Maximum 255 characters.
    Always set: derived from the SKILL.md frontmatter `name` when omitted at
    creation. Not unique.

  - `required string LatestVersionID`

    ID of the newest Skill Version — what `latest` references resolve to. Always set: a Skill holds at least one version.

  - `required BetaSkillSource Source`

    Where the Skill comes from.

    Possible values:

    * `"custom"`: authored by the platform user; private to their workspace
    * `"anthropic"`: published by Anthropic; shared and read-only
    * `"anthropic_example"`: Anthropic-published sample Skill
    * `"plugin"`: resolved from an installed plugin

    - `required Type Type`

      Where the Skill comes from.

      Possible values:

      * `"custom"`: authored by the platform user; private to their workspace
      * `"anthropic"`: published by Anthropic; shared and read-only
      * `"anthropic_example"`: Anthropic-published sample Skill
      * `"plugin"`: resolved from an installed plugin

      - `Custom("custom")`

      - `Anthropic("anthropic")`

      - `AnthropicExample("anthropic_example")`

      - `Plugin("plugin")`

  - `required DateTimeOffset UpdatedAt`

    ISO 8601 timestamp of when the skill was last updated.

    format: date-time

## Example

```csharp
using System;
using System.Text;
using Anthropic.Models.Beta.Skills;

SkillCreateParams parameters = new()
{
    Files =
    [
        Encoding.UTF8.GetBytes("Example data")
    ],
};

var betaSkill = await client.Beta.Skills.Create(parameters);

Console.WriteLine(betaSkill);
```

### Response (200)

```json
{
  "id": "skill_01JAbcdefghijklmnopqrstuvw",
  "created_at": "2024-10-30T23:58:27.427722Z",
  "display_name": "display_name",
  "latest_version_id": "latest_version_id",
  "source": {
    "type": "custom"
  },
  "type": "skill",
  "updated_at": "2024-10-30T23:58:27.427722Z"
}
```