> ## Documentation Index > Fetch the complete documentation index at: https://developers.askparable.com/llms.txt > Use this file to discover all available pages before exploring further. # Update a Power > Updates a Power's details and Markdown instructions. Accepted Ponder Messages and Process Runs retain their captured Power instructions. ## Access This operation needs a Parable token. An MCP token cannot call it. See [Authentication](/getting-started/authentication.md) for the kinds of token. Your roles must grant `tenant.parables.manage`. ## Errors * `HTTP 400`: The Agent Skill identifier or update input is invalid. Use a valid identifier and correct the update input. * `HTTP 401`: The request is not authenticated. Sign in and select the Workspace. * `HTTP 403`: You cannot manage Agent Skills in this Workspace. Use a Workspace where you can manage Parables. * `HTTP 404`: The Agent Skill does not exist in this Workspace. Choose an Agent Skill returned by the current Workspace catalog. * `HTTP 409`: The Skill changed after the expected revision or another Skill uses the requested name. Reload the Skill, preserve concurrent changes, and retry with the current revision and an unused name. ## OpenAPI ````yaml /api-reference/openapi.json patch /api/agent-skills/{skillId} openapi: 3.0.3 info: description: >- Use the Workspace API to work with artifacts, connectors, Parables, and account resources. title: Workspace API version: v2026.10.22.1 servers: [] security: [] paths: /api/agent-skills/{skillId}: patch: tags: - Agent skills summary: Update a Power description: >- Updates a Power's details and Markdown instructions. Accepted Ponder Messages and Process Runs retain their captured Power instructions. operationId: AgentSkillsUpdateAgentSkillHandler parameters: - description: >- Workspace slug. Overrides subdomain-based workspace resolution when provided. in: header name: X-Tenant required: false schema: example: acme type: string - description: Optional request correlation ID echoed back in the response. in: header name: X-Request-ID required: false schema: example: 550e8400-e29b-41d4-a716-446655440000 format: uuid type: string - description: skillId parameter in: path name: skillId required: true schema: description: UUID v4 with automatic base62 encoding for client-facing APIs type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/UpdateAgentSkillInput' required: true responses: '200': content: application/json: schema: properties: data: $ref: '#/components/schemas/AgentSkill' links: $ref: '#/components/schemas/ResponseLinks' meta: $ref: '#/components/schemas/ResponseMeta' required: - data - meta type: object description: Successful response headers: X-Request-ID: $ref: '#/components/headers/X-Request-ID' '400': content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: >- The request is not valid. `detail` says why. A value that breaks a field rule gives the code `WA-VL-001` and an `errors` member that names each field. headers: X-Request-ID: $ref: '#/components/headers/X-Request-ID' '401': content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: The token is missing, malformed, revoked, or expired. headers: X-Request-ID: $ref: '#/components/headers/X-Request-ID' '403': content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: >- The token cannot make this request. For example, the roles of its owner do not allow the operation. headers: X-Request-ID: $ref: '#/components/headers/X-Request-ID' '404': content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: The resource that the path names was not found. headers: X-Request-ID: $ref: '#/components/headers/X-Request-ID' '500': content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: The request failed on the server. headers: X-Request-ID: $ref: '#/components/headers/X-Request-ID' security: - bearerAuth: [] x-codeSamples: - label: TypeScript SDK lang: typescript source: >- import { WebApiSDK } from "@parable-platform/web-api-sdk"; import type { UpdateAgentSkillInput } from "@parable-platform/web-api-types"; const sdk = new WebApiSDK({ baseUrl: process.env.PARABLE_API_URL!, auth: { token: process.env.PARABLE_API_TOKEN! }, requestInterceptor: (config) => ({ ...config, headers: { ...config.headers, "X-Tenant": process.env.PARABLE_WORKSPACE! }, }), }); const input: UpdateAgentSkillInput = JSON.parse(`{ "displayTitle": "example", "name": "example", "icon": "example", "description": "example", "content": "example", "files": [], "expectedRevision": 1 }`); const result = await sdk.agentSkills.updateAgentSkill( "example", input ); - label: Python SDK lang: python source: |- import json import os from parable_types_web_api import UpdateAgentSkillInput from parable_web_api_sdk import ClientConfig, WebApiSDK sdk = WebApiSDK( ClientConfig( base_url=os.environ["PARABLE_API_URL"], auth_token=os.environ["PARABLE_API_TOKEN"], default_headers={"X-Tenant": os.environ["PARABLE_WORKSPACE"]}, ) ) input_data = UpdateAgentSkillInput.model_validate( json.loads("{\"displayTitle\":\"example\",\"name\":\"example\",\"icon\":\"example\",\"description\":\"example\",\"content\":\"example\",\"files\":[],\"expectedRevision\":1}"), ) result = sdk.agent_skills.update_agent_skill('example', input_data) - label: Rust SDK lang: rust source: >- use parable_web_api_sdk::{types, ClientConfig, RequestOptions, WebApiSdk}; let sdk = WebApiSdk::new(ClientConfig::with_base_url( std::env::var("PARABLE_API_URL")?, Some(std::env::var("PARABLE_API_TOKEN")?), None, ))?; let options = RequestOptions::with_header("X-Tenant", std::env::var("PARABLE_WORKSPACE")?, None, None); let input: types::UpdateAgentSkillInput = serde_json::from_value( serde_json::json!({ "displayTitle": "example", "name": "example", "icon": "example", "description": "example", "content": "example", "files": [], "expectedRevision": 1 }), )?; let result = sdk.agent_skills.update_agent_skill( serde_json::from_value(serde_json::json!("example"))?, input, Some(&options) ).await?; - label: Go SDK lang: go source: "sdk, err := webapisdk.New(webapisdk.SDKConfig{\n\tBaseURL: os.Getenv(\"PARABLE_API_URL\"),\n\tAuth: &webapisdk.AuthConfig{Token: os.Getenv(\"PARABLE_API_TOKEN\")},\n\tRequestInterceptor: func(ctx context.Context, req *http.Request) error {\n\t\treq.Header.Set(\"X-Tenant\", os.Getenv(\"PARABLE_WORKSPACE\"))\n\t\treturn nil\n\t},\n})\nif err != nil {\n\treturn err\n}\n\nvar input webapitypes.UpdateAgentSkillInput\nif err := json.Unmarshal([]byte(`{\"displayTitle\":\"example\",\"name\":\"example\",\"icon\":\"example\",\"description\":\"example\",\"content\":\"example\",\"files\":[],\"expectedRevision\":1}`), &input); err != nil {\n\treturn err\n}\nresult, err := sdk.AgentSkillsNamespace.UpdateAgentSkill(ctx, \"example\", input)" components: schemas: UpdateAgentSkillInput: properties: content: description: Markdown text maxLength: 65536 minLength: 1 pattern: ^[\s\S]*$ type: string description: maxLength: 1024 minLength: 1 type: string displayTitle: maxLength: 80 minLength: 1 type: string expectedRevision: description: >- Signed 64-bit integer; range bounded by JavaScript's safe-integer ceiling. format: int64 maximum: 9007199254740991 minimum: -9007199254740991 type: integer files: items: $ref: '#/components/schemas/AgentSkillFile' maxItems: 400 minItems: 0 type: array icon: description: >- Serialized icon spec: a Font Awesome pack/weight/fill/name, an emoji, or an asset URL maxLength: 2048 minLength: 1 pattern: >- ^(?:fa:[a-z0-9]+(?:-[a-z0-9]+)*:[a-z0-9]+-[a-z0-9]+(?:-[a-z0-9]+)*:[a-z0-9]+(?:-[a-z0-9]+)*(?:@#[0-9a-f]{6})?|emoji:\S+|image:\S+)$ type: string name: description: Portable Agent Skills directory and frontmatter name maxLength: 64 minLength: 1 pattern: ^[a-z0-9]+(?:-[a-z0-9]+)*$ type: string required: - displayTitle - name - icon - description - content - files - expectedRevision type: object AgentSkill: description: Mutable Workspace catalog entry used by the API and authoring UI. properties: content: description: Markdown text maxLength: 65536 minLength: 1 pattern: ^[\s\S]*$ type: string contentDigest: description: Lowercase hexadecimal SHA-256 digest maxLength: 64 minLength: 64 pattern: ^[0-9a-f]{64}$ type: string createdAt: description: >- ISO8601 datetime string. Epoch wire values keep this scalar and declare x-temporal-format (unix, unix_millis, unix_micros, unix_nanos) on the property; the unit is never guessed from digit count. format: date-time type: string description: maxLength: 1024 minLength: 1 type: string displayTitle: maxLength: 80 minLength: 1 type: string files: items: $ref: '#/components/schemas/AgentSkillFile' maxItems: 400 minItems: 0 type: array icon: description: >- Serialized icon spec: a Font Awesome pack/weight/fill/name, an emoji, or an asset URL maxLength: 2048 minLength: 1 pattern: >- ^(?:fa:[a-z0-9]+(?:-[a-z0-9]+)*:[a-z0-9]+-[a-z0-9]+(?:-[a-z0-9]+)*:[a-z0-9]+(?:-[a-z0-9]+)*(?:@#[0-9a-f]{6})?|emoji:\S+|image:\S+)$ type: string id: description: UUID v4 with automatic base62 encoding for client-facing APIs pattern: >- ^([0-9A-Za-z]{1,22}|[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$ type: string name: description: Portable Agent Skills directory and frontmatter name maxLength: 64 minLength: 1 pattern: ^[a-z0-9]+(?:-[a-z0-9]+)*$ type: string revision: description: >- Signed 64-bit integer; range bounded by JavaScript's safe-integer ceiling. format: int64 maximum: 9007199254740991 minimum: -9007199254740991 type: integer updatedAt: description: >- ISO8601 datetime string. Epoch wire values keep this scalar and declare x-temporal-format (unix, unix_millis, unix_micros, unix_nanos) on the property; the unit is never guessed from digit count. format: date-time type: string required: - displayTitle - name - icon - description - id - revision - contentDigest - createdAt - updatedAt - content - files type: object ResponseLinks: properties: first: nullable: true type: string last: nullable: true type: string next: nullable: true type: string prev: nullable: true type: string type: object ResponseMeta: properties: requestId: description: Unique identifier for the request type: string totalCount: description: Total count of items for paginated responses nullable: true type: integer required: - requestId type: object ProblemDetails: description: An error response in the Problem Details format (RFC 9457). properties: code: description: The stable error code, when the problem has one. example: WA-VL-001 type: string detail: description: What went wrong with this request. type: string details: description: >- Structured facts about the refusal, such as the entity or the path it concerns. Only some refusals have it. errors: description: >- The fields or filters that failed validation. Only a validation or filter error has it. requestId: description: >- The ID of the request, when the problem has one. The `X-Request-ID` response header always has it. type: string status: description: The HTTP status code. example: 400 type: integer title: description: A short summary, usually the text of the HTTP status. example: Bad Request type: string type: description: >- The problem type. It is `about:blank`: the status and `code` identify the problem. example: about:blank type: string required: - type - title - status - detail type: object AgentSkillFile: description: >- One reference file bundled with a skill (AI SDK Harness `files`). `path` is a skill-relative POSIX path such as `references/checklist.md`; `content` is text. The instruction body discloses paths, and a runtime reads or searches the content only on demand. properties: content: maxLength: 262144 minLength: 0 type: string path: maxLength: 512 minLength: 1 type: string required: - path - content type: object headers: X-Request-ID: description: >- The ID of the request. It is the `X-Request-ID` value that you sent, or an ID that the server made. Give it when you report a problem. schema: type: string securitySchemes: bearerAuth: description: >- A personal access token, which starts with `pat_`. A Parable token can call each operation that the roles of its owner allow. An MCP token can call only the read operations that are open to agents. A SQL token does not work on this API. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.