> ## Documentation Index > Fetch the complete documentation index at: https://test-8862363a-tembo-docs-codex-usage-reset.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Update a message > Update message content before its queued processing has started. ## OpenAPI ````yaml https://api.tembo.io/public-api/openapi/public patch /v1/messages/{messageId} openapi: 3.1.0 info: title: Tembo Public API description: >- Manage agents, sessions, repositories, and organization resources with the Tembo API. version: 1.0.0 servers: - url: https://api.tembo.io description: Tembo API - url: https://{deployment-origin}/api/public-api description: Self-hosted Tembo variables: deployment-origin: default: tembo.example.com description: Hostname of your self-hosted Tembo deployment security: [] paths: /v1/messages/{messageId}: patch: tags: - Messages summary: Update a message description: Update message content before its queued processing has started. operationId: updateMessage parameters: - in: path name: messageId schema: type: string format: uuid required: true requestBody: required: true content: application/json: schema: type: object properties: content: type: string minLength: 1 maxLength: 1000000 richContent: oneOf: - $ref: '#/components/schemas/TipTapDocument' - type: 'null' additionalProperties: false responses: '200': description: Update a message content: application/json: schema: type: object properties: artifactId: type: - string - 'null' format: uuid content: type: string createdAt: type: string format: date-time createdBy: type: - string - 'null' externalAvatarUrl: type: - string - 'null' externalUrl: type: - string - 'null' id: type: string format: uuid parentMessageId: type: - string - 'null' format: uuid pullRequestId: type: - string - 'null' format: uuid role: type: string enum: - user - assistant - system sessionId: type: - string - 'null' format: uuid type: type: string updatedAt: type: string format: date-time richContent: oneOf: - $ref: '#/components/schemas/TipTapDocument' - type: 'null' description: >- Rich-text representation of the message, including formatting and mentions. The content field contains its text representation. slashCommand: type: - object - 'null' properties: command: type: string minLength: 1 maxLength: 200 arguments: type: string maxLength: 100000 required: - command additionalProperties: false source: type: - string - 'null' maxLength: 100 required: - artifactId - content - createdAt - createdBy - externalAvatarUrl - externalUrl - id - parentMessageId - pullRequestId - role - sessionId - type - updatedAt - richContent - slashCommand - source additionalProperties: false '400': description: >- Invalid request or missing required organization or user information. content: application/json: schema: type: object properties: error: type: string required: - error additionalProperties: false '404': description: Message or session not found content: application/json: schema: type: object properties: error: type: string required: - error additionalProperties: false '409': description: Message operation conflicts with its current state content: application/json: schema: type: object properties: error: type: string required: - error additionalProperties: false '500': description: Message operation failed content: application/json: schema: type: object properties: error: type: string required: - error additionalProperties: false security: - apiKey: [] x-codeSamples: - lang: typescript label: TypeScript SDK source: > import Tembo from '@tembo-io/sdk'; const client = new Tembo(); const message = await client.messages.update('7c9e6679-7425-40de-944b-e07fc1f90ae7', {}); components: schemas: TipTapDocument: anyOf: - $ref: '#/components/schemas/TipTapNode' - $ref: '#/components/schemas/CustomDocument' description: >- Rich-text document containing text, formatting, images, and mentions. A document typically has a "doc" root with nested content nodes. example: type: doc content: - type: paragraph content: - type: text text: Hello TipTapNode: anyOf: - oneOf: - type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string const: image attrs: $ref: '#/components/schemas/TipTapImageAttributes' content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 required: - type additionalProperties: {} - type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string const: mention attrs: $ref: '#/components/schemas/TipTapMentionAttributes' content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 required: - type additionalProperties: {} - type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string const: heading attrs: type: object properties: level: type: integer minimum: 1 maximum: 6 additionalProperties: {} content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 required: - type additionalProperties: {} - type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string const: orderedList attrs: type: object properties: start: type: integer type: type: - string - 'null' additionalProperties: {} content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 required: - type additionalProperties: {} - type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string const: taskItem attrs: type: object properties: checked: type: boolean additionalProperties: {} content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 required: - type additionalProperties: {} - type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string const: codeBlock attrs: type: object properties: language: type: - string - 'null' additionalProperties: {} content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 required: - type additionalProperties: {} - $ref: '#/components/schemas/TipTapContentNode' CustomDocument: type: object additionalProperties: {} description: Rich-text content with custom document properties and node attributes. TipTapLinkMark: type: object properties: type: type: string const: link attrs: type: object properties: href: type: - string - 'null' target: type: - string - 'null' rel: type: - string - 'null' class: type: - string - 'null' title: type: - string - 'null' additionalProperties: {} required: - type additionalProperties: {} TipTapMark: type: object properties: type: type: string minLength: 1 maxLength: 100 not: enum: - link attrs: $ref: '#/components/schemas/TipTapExtensionAttributes' required: - type additionalProperties: {} TipTapImageAttributes: type: object properties: src: type: - string - 'null' alt: type: - string - 'null' title: type: - string - 'null' width: type: - string - 'null' data-uploading: type: - string - 'null' data-placeholder-id: type: - string - 'null' upload-progress: type: - string - 'null' additionalProperties: {} TipTapMentionAttributes: type: object properties: id: type: - string - 'null' label: type: - string - 'null' type: type: - string - 'null' mentionSuggestionChar: type: - string - 'null' metadata: type: - object - 'null' properties: integrationType: type: string codeRepositoryId: type: string isHeader: type: boolean argumentHint: type: string commandName: type: string source: type: string additionalProperties: {} additionalProperties: {} TipTapContentNode: type: object properties: text: type: string maxLength: 1000000 marks: type: array items: anyOf: - $ref: '#/components/schemas/TipTapLinkMark' - $ref: '#/components/schemas/TipTapMark' maxItems: 1000 type: type: string minLength: 1 maxLength: 100 not: enum: - image - mention - heading - orderedList - taskItem - codeBlock attrs: $ref: '#/components/schemas/TipTapExtensionAttributes' content: type: array items: $ref: '#/components/schemas/TipTapNode' maxItems: 10000 additionalProperties: {} TipTapExtensionAttributes: type: object additionalProperties: {} securitySchemes: apiKey: type: http scheme: bearer ````