> ## Documentation Index > Fetch the complete documentation index at: https://openphone-dev.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Mark conversation as read > Mark a conversation as read, clearing its unread indicator without sending a message. Returns the updated conversation. ## OpenAPI ````yaml https://openphone-public-api-dev.s3.us-west-2.amazonaws.com/public/openphone-public-api-2026-03-30-dev.json post /conversations/{conversationId}/mark-as-read openapi: 3.1.0 info: title: Quo Public API version: 1.0.0 description: API for connecting with Quo. contact: name: Quo Support email: support@quo.com url: https://support.quo.com/ termsOfService: https://www.quo.com/terms servers: - description: Development server url: https://dev-public-api.openphone.dev security: - apiKey: [] tags: - description: Operations related to calls name: Calls - description: >- Operations related to call summaries, including AI-generated summaries and Sona voice assistant summaries name: Call Summaries - description: >- Operations related to call transcripts, including AI-generated transcripts and Sona voice assistant transcripts name: Call Transcripts - description: Operations related to contacts name: Contacts - description: Operations related to contact properties name: Contact Properties - description: Operations related to conversations name: Conversations - description: Operations related to text messages name: Messages - description: Operations related to phone numbers name: Phone Numbers - description: Operations related to users name: Users - description: Operations related to webhooks name: Webhooks - description: >- Operations related to webhook events, including delivery history and test events name: Webhook Events paths: /conversations/{conversationId}/mark-as-read: post: tags: - Conversations summary: Mark conversation as read description: >- Mark a conversation as read, clearing its unread indicator without sending a message. Returns the updated conversation. operationId: markConversationAsRead parameters: - in: path name: conversationId required: true schema: description: The unique identifier of the conversation to mark as read. examples: - CN123abc pattern: ^CN(.*)$ type: string example: CN123abc - in: header name: Quo-Api-Version required: true schema: type: string enum: - '2026-03-30' description: 'API version header. Supported values: 2026-03-30' responses: '200': description: OK content: application/json: schema: type: object required: - data properties: data: type: object required: - assignedTo - createdAt - deletedAt - id - lastActivityAt - lastActivityId - mutedUntil - name - participants - phoneNumberId - snoozedUntil - updatedAt properties: assignedTo: anyOf: - description: >- The unique identifier of the user or system user the conversation is assigned to. examples: - US123abc - SYU123abc example: US123abc anyOf: - pattern: ^US(.*)$ type: string - pattern: ^SYU(.*)$ type: string - type: 'null' createdAt: anyOf: - format: date-time type: string - type: 'null' deletedAt: anyOf: - format: date-time type: string - type: 'null' id: description: The unique identifier of the conversation. examples: - CN123abc pattern: ^CN(.*)$ type: string example: CN123abc lastActivityAt: anyOf: - format: date-time type: string - type: 'null' lastActivityId: anyOf: - description: >- The unique identifier of the most recent activity in the conversation. examples: - AC123abc pattern: ^AC(.*)$ type: string example: AC123abc - type: 'null' mutedUntil: anyOf: - format: date-time type: string - type: 'null' name: anyOf: - description: >- The custom name of the conversation. Will be null if no custom name is set. examples: - Chat with customer type: string example: Chat with customer - type: 'null' participants: type: array items: description: >- A phone number in E.164 format, including the country code. examples: - '+15555555555' pattern: ^\+[1-9]\d{1,14}$ type: string example: '+15555555555' phoneNumberId: description: >- The unique identifier of the Quo phone number associated with the conversation. examples: - PN123abc pattern: ^PN(.*)$ type: string example: PN123abc snoozedUntil: anyOf: - format: date-time type: string - type: 'null' updatedAt: anyOf: - format: date-time type: string - type: 'null' '400': description: Bad Request content: application/json: schema: type: object required: - message - docs - title properties: message: type: string docs: const: https://quo.com/docs type: string title: const: Bad Request type: string trace: type: string errors: type: array items: type: object required: - path - message - schema properties: path: type: string message: type: string value: {} schema: type: object required: - type properties: type: type: string example: message: The input was invalid docs: https://quo.com/docs title: Bad Request errors: - path: /conversationId message: Expected string to match '^CN(.*)$' value: abc123 schema: type: TemplateLiteral pattern: ^CN(.*)$ '401': description: Unauthorized content: application/json: schema: type: object required: - message - docs - title properties: message: type: string docs: const: https://quo.com/docs type: string title: const: Unauthorized type: string trace: type: string errors: type: array items: type: object required: - path - message - schema properties: path: type: string message: type: string value: {} schema: type: object required: - type properties: type: type: string example: message: Unauthorized docs: https://quo.com/docs title: Unauthorized trace: '6897907457496870895' '403': description: Forbidden content: application/json: schema: type: object required: - message - docs - title properties: message: type: string docs: const: https://quo.com/docs type: string title: const: Forbidden type: string trace: type: string errors: type: array items: type: object required: - path - message - schema properties: path: type: string message: type: string value: {} schema: type: object required: - type properties: type: type: string example: message: User is forbidden to perform this action docs: https://quo.com/docs title: Forbidden trace: '6897907457496870895' '404': description: Not Found content: application/json: schema: type: object required: - message - docs - title properties: message: type: string docs: const: https://quo.com/docs type: string title: const: Not Found type: string trace: type: string errors: type: array items: type: object required: - path - message - schema properties: path: type: string message: type: string value: {} schema: type: object required: - type properties: type: type: string example: message: Conversation not found docs: https://quo.com/docs title: Not Found trace: '6897907457496870895' '500': description: Unknown Error content: application/json: schema: type: object required: - message - docs - title properties: message: type: string docs: const: https://quo.com/docs type: string title: const: Unknown type: string trace: type: string errors: type: array items: type: object required: - path - message - schema properties: path: type: string message: type: string value: {} schema: type: object required: - type properties: type: type: string example: message: We have encountered an unknown error docs: https://quo.com/docs title: Unknown trace: '6897907457496870895' security: - apiKey: [] components: securitySchemes: apiKey: in: header name: Authorization type: apiKey ````