> ## Documentation Index > Fetch the complete documentation index at: https://docs.whop.com/llms.txt > Use this file to discover all available pages before exploring further. # Update course chapter > Update a chapter's title within a course. Required permissions: - `courses:update` ## OpenAPI ````yaml /openapi/api-v1-stable.json patch /course_chapters/{id} openapi: 3.1.0 info: description: >- The Whop REST API. Please see https://docs.whop.com/developer/api/getting-started for more details. termsOfService: https://whop.com/tos-developer-api/ title: Whop API version: 1.0.0 x-api-version-date: 2026-07-08-1 servers: - description: Production Whop API url: https://api.whop.com/api/v1 - description: Sandbox Whop API url: https://sandbox-api.whop.com/api/v1 security: [] tags: - description: Products name: Products - description: Payments name: Payments - description: Refunds name: Refunds - description: Disputes name: Disputes - description: Dispute alerts name: Dispute alerts - description: Resolution center cases name: Resolution center cases - description: Checkout configurations name: Checkout configurations - description: Setup intents name: Setup intents - description: Payment methods name: Payment methods - description: Invoices name: Invoices - description: Promo codes name: Promo codes - description: Card transactions name: Card transactions - description: Ledger accounts name: Ledger accounts - description: Withdrawals name: Withdrawals - description: Payout methods name: Payout methods - description: Verifications name: Verifications - description: Identity profiles name: Identity profiles - description: Payout accounts name: Payout accounts - description: Topups name: Topups - description: Companies name: Companies - description: Authorized users name: Authorized users - description: Fee markups name: Fee markups - description: Members name: Members - description: Memberships name: Memberships - description: Leads name: Leads - description: Entries name: Entries - description: Shipments name: Shipments - description: Reviews name: Reviews - description: Company token transactions name: Company token transactions - description: Affiliates name: Affiliates - description: Experiences name: Experiences - description: Forums name: Forums - description: Forum posts name: Forum posts - description: Chat channels name: Chat channels - description: Support channels name: Support channels - description: Messages name: Messages - description: Reactions name: Reactions - description: Dm members name: Dm members - description: Dm channels name: Dm channels - description: Notifications name: Notifications - description: Courses name: Courses - description: Course chapters name: Course chapters - description: Course lessons name: Course lessons - description: Course students name: Course students - description: Course lesson interactions name: Course lesson interactions - description: Apps name: Apps - description: Webhooks name: Webhooks - description: App builds name: App builds - description: Access tokens name: Access tokens - description: Account links name: Account links - description: Files name: Files - description: Ai chats name: Ai chats - description: Bounties name: Bounties - description: Stats name: Stats - description: Conversions name: Conversions - description: Ad reports name: Ad reports paths: /course_chapters/{id}: patch: tags: - Course chapters summary: Update course chapter description: |- Update a chapter's title within a course. Required permissions: - `courses:update` operationId: updateCourseChapter parameters: - description: The unique identifier of the chapter to update (e.g., "chap_XXXXX"). in: path name: id required: true schema: example: chap_xxxxxxxxxxxxx type: string requestBody: content: application/json: schema: description: Parameters for UpdateChapter properties: title: description: >- The new display title of the chapter (e.g., "Module 1: Introduction"). type: string required: - title type: object required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/CourseChapter' description: A successful response '400': content: application/json: example: error: code: parameter_missing message: 'Missing required parameter: amount.' param: amount type: invalid_request_error schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Bad request '401': content: application/json: example: error: message: Invalid or missing API key type: unauthorized schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Unauthorized '403': content: application/json: example: error: message: You do not have permission to access this resource type: forbidden schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Forbidden '404': content: application/json: example: error: message: Resource not found type: not_found schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Not found '422': content: application/json: example: error: null schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Verification required '429': content: application/json: example: error: null schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Too many requests '500': content: application/json: example: error: message: An unexpected error occurred type: internal_server_error schema: properties: error: properties: code: description: >- A short string indicating the specific error code, e.g. 'parameter_missing', 'parameter_invalid', 'invalid_json' type: - string - 'null' message: type: string param: description: The parameter that caused the error, if applicable type: - string - 'null' type: type: string required: - type - message type: object required: - error type: object description: Internal server error security: - bearerAuth: - courses:update components: schemas: CourseChapter: description: >- A grouping of related lessons within a course, used to organize content into sections. properties: id: description: The unique identifier for the chapter. example: chap_xxxxxxxxxxxxx type: string lessons: description: >- An ordered list of lessons in this chapter, sorted by display position. Hidden lessons are excluded for non-admin users. items: description: >- An individual learning unit within a chapter, which can contain text, video, PDF, or assessment content. properties: id: description: The unique identifier for the lesson. example: lesn_xxxxxxxxxxxxx type: string order: description: >- The sort position of this lesson within its parent chapter, starting from zero. example: 42 type: integer title: description: >- The display name of the lesson shown to students. Maximum 120 characters. example: Understanding Candlestick Patterns type: string required: - id - title - order type: object type: array order: description: >- The sort position of this chapter within its parent course, starting from zero. example: 42 type: integer title: description: >- The display name of the chapter shown to students. Maximum 150 characters. example: Getting Started type: string required: - id - title - order - lessons type: object securitySchemes: bearerAuth: bearerFormat: auth-scheme description: >- A company API key, company scoped JWT, app API key, or user OAuth token. You must prepend your key/token with the word 'Bearer', which will look like `Bearer ***************************` scheme: bearer type: http ````