> ## Documentation Index > Fetch the complete documentation index at: https://docs.lala.ist/llms.txt > Use this file to discover all available pages before exploring further. # Remove a reaction > Idempotent. Removes only the reaction the student left. ## OpenAPI ````yaml /api-reference/openapi.json delete /api/chat/messages/{id}/reactions/{emoji} openapi: 3.1.0 info: title: Lala Client API description: >- The HTTP API behind Lala, the AI study companion for Turkish YKS and LGS students. This document is generated from the Zod schemas that validate each request at runtime. Do not hand-edit openapi.json. Student-visible text is Turkish. All identifiers are English. version: 1.0.0 servers: - url: https://client-api.lala.ist description: production - url: http://localhost:3000 description: local dev security: - supabaseJwt: [] tags: - name: chat description: The chat stream, the message history, and reactions - name: media description: Upload and read message attachments - name: plan description: The study planner — blocks of work on a day - name: journey description: Deneme results, topic performance, study-hours stats, and the streak - name: profile description: The student profile and onboarding - name: devices description: Push notification devices - name: system description: Health check paths: /api/chat/messages/{id}/reactions/{emoji}: delete: tags: - chat summary: Remove a reaction description: Idempotent. Removes only the reaction the student left. operationId: deleteApiChatMessagesByIdReactionsByEmoji parameters: - schema: type: string in: path name: id required: true - schema: type: string in: path name: emoji required: true responses: '200': description: The message, with its reactions content: application/json: schema: $ref: '#/components/schemas/MessageResponse' '401': description: The token is missing, expired, or invalid content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: No such message in this conversation content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: MessageResponse: type: object properties: message: $ref: '#/components/schemas/ChatMessage' required: - message ErrorResponse: type: object properties: error: type: string issues: description: >- Present only on a 400 raised by request validation, capped at 10 entries. Every other error carries `error` alone. type: array items: $ref: '#/components/schemas/ValidationIssue' required: - error description: Error body. `error` is a short English string. ChatMessage: type: object properties: id: type: string role: $ref: '#/components/schemas/MessageRole' content: type: string media: type: array items: $ref: '#/components/schemas/Media' reactions: type: array items: $ref: '#/components/schemas/MessageReaction' replyTo: anyOf: - $ref: '#/components/schemas/MessageRef' - type: 'null' turnIndex: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: >- Position in one Lala turn. 0 unless Lala answered in several messages. cursor: type: string description: Opaque. Pass as `before` to page backwards. timestamp: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ required: - id - role - content - media - reactions - replyTo - turnIndex - cursor - timestamp ValidationIssue: type: object properties: path: type: string description: Dotted path to the offending field, empty at the root. message: type: string required: - path - message MessageRole: type: string enum: - user - lala description: Who wrote the message. Lala's role is `lala`. Media: type: object properties: id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ kind: $ref: '#/components/schemas/MediaKind' mimeType: type: string sizeBytes: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' width: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' height: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' durationMs: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' fileName: anyOf: - type: string - type: 'null' status: type: string enum: - pending - ready description: '`ready` when the bytes are in storage. Only ready media can be sent.' url: anyOf: - type: string - type: 'null' description: >- Short-lived signed URL, null while the media is pending. It expires — read the media or the message again for a new one. Do not cache it. urlExpiresAt: anyOf: - type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ - type: 'null' createdAt: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ required: - id - kind - mimeType - sizeBytes - width - height - durationMs - fileName - status - url - urlExpiresAt - createdAt MessageReaction: type: object properties: emoji: type: string actor: $ref: '#/components/schemas/MessageRole' createdAt: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ required: - emoji - actor - createdAt MessageRef: type: object properties: id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ role: $ref: '#/components/schemas/MessageRole' content: type: string description: The first 200 characters, for the quote. mediaKind: anyOf: - $ref: '#/components/schemas/MediaKind' - type: 'null' required: - id - role - content - mediaKind description: The message a reply points at. MediaKind: type: string enum: - image - audio - video - file securitySchemes: supabaseJwt: type: http scheme: bearer bearerFormat: JWT description: 'Supabase access token: `Authorization: Bearer `' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.