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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Page history

Create Skill

api/beta/skills/create

4 recorded changes 181 lines First seen Last changed Upstream

History

api/beta/skills/create Changed · +15 / -1 lines

from line 12
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
 
     - `"message-batches-2024-09-24"`
 
from line 81
     - `"agent-memory-2026-07-22"`
 
     - `"mid-conversation-tool-changes-2026-07-01"`
+
+    - `"compact-2026-01-12"`
+
+    - `"computer-use-2025-11-24"`
+
+    - `"mcp-tunnels-2026-06-22"`
+
+    - `"structured-outputs-2025-11-13"`
+
+    - `"task-budgets-2026-03-13"`
+
+    - `"thinking-display-updates-2026-08-18"`
+
+    - `"ce-user-management-2026-07-13"`
 
 ## Body parameters (form-data)
 

api/beta/skills/create Changed · +23 / -12 lines

# Create Skill ## Headers ## Body parameters (form-data) ## Returns ## Example ### Response (200) ## Create Skill ### Header Parameters ### Returns ### Example #### Response

from line 1
----
-title: Create Skill
-url: https://platform.claude.com/docs/en/api/beta/skills/create
----
+# Create Skill
 
-## Create Skill
+**POST** `/v1/skills`
 
-**post** `/v1/skills`
-
 Create Skill
 
-### Header Parameters
+## Headers
 
 - `"anthropic-beta": optional array of AnthropicBeta`
 
from line 82
 
     - `"mid-conversation-tool-changes-2026-07-01"`
 
-### Returns
+## 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.
+
+- `display_title: optional string or null`
+
+  Display title for the skill.
+
+  This is a human-readable label that is not included in the prompt sent to the model.
+
+## Returns
+
 - `id: string`
 
   Unique identifier for the skill.
from line 135
 
   For Skills, this is always `"skill"`.
 
+  default: skill
+
 - `updated_at: string`
 
   ISO 8601 timestamp of when the skill was last updated.
 
-### Example
+## Example
 
-```http
+```bash
 curl https://api.anthropic.com/v1/skills \
     -H 'Content-Type: multipart/form-data' \
     -H 'anthropic-version: 2023-06-01' \
from line 152
     -F files='["Example data"]'
 ```
 
-#### Response
+### Response (200)
 
 ```json
 {

api/beta/skills/create Changed · +3 / -1 lines

from line 17
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 62
     - `"output-300k-2026-03-24"`
 
     - `"user-profiles-2026-03-24"`
+
+    - `"user-profiles-2026-08-18"`
 
     - `"advisor-tool-2026-03-01"`
 

api/beta/skills/create First recorded · 154 lines, first recorded

## Create Skill ### Header Parameters ### Returns ### Example #### Response

The first capture of this source. The page was already there, and this is what it said.

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

## Create Skill

**post** `/v1/skills`

Create Skill

### Header Parameters

- `"anthropic-beta": optional array of AnthropicBeta`

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

  - `string`

  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`

    - `"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"`

    - `"mcp-client-2025-11-20"`

    - `"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"`

    - `"fast-mode-2026-02-01"`

    - `"output-300k-2026-03-24"`

    - `"user-profiles-2026-03-24"`

    - `"advisor-tool-2026-03-01"`

    - `"managed-agents-2026-04-01"`

    - `"cache-diagnosis-2026-04-07"`

    - `"dreaming-2026-04-21"`

    - `"thinking-token-count-2026-05-13"`

    - `"server-side-fallback-2026-06-01"`

    - `"server-side-fallback-2026-07-01"`

    - `"fallback-credit-2026-06-01"`

    - `"fallback-credit-2026-07-01"`

    - `"agent-memory-2026-07-22"`

    - `"mid-conversation-tool-changes-2026-07-01"`

### Returns

- `id: string`

  Unique identifier for the skill.

  The format and length of IDs may change over time.

- `created_at: string`

  ISO 8601 timestamp of when the skill was created.

- `display_title: string or null`

  Display title for the skill.

  This is a human-readable label that is not included in the prompt sent to the model.

- `latest_version: string or null`

  The latest version identifier for the skill.

  This represents the most recent version of the skill that has been created.

- `source: string`

  Source of the skill.

  This may be one of the following values:

  * `"custom"`: the skill was created by a user
  * `"anthropic"`: the skill was created by Anthropic

- `type: string`

  Object type.

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

- `updated_at: string`

  ISO 8601 timestamp of when the skill was last updated.

### Example

```http
curl https://api.anthropic.com/v1/skills \
    -H 'Content-Type: multipart/form-data' \
    -H 'anthropic-version: 2023-06-01' \
    -H 'anthropic-beta: skills-2025-10-02' \
    -H "X-Api-Key: $ANTHROPIC_API_KEY" \
    -F files='["Example data"]'
```

#### Response

```json
{
  "id": "skill_01JAbcdefghijklmnopqrstuvw",
  "created_at": "2024-10-30T23:58:27.427722Z",
  "display_title": "My Custom Skill",
  "latest_version": "1759178010641129",
  "source": "custom",
  "type": "type",
  "updated_at": "2024-10-30T23:58:27.427722Z"
}
```