> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tetherai.ca/llms.txt
> Use this file to discover all available pages before exploring further.

# Create a reminder for a contact

> Creates an unfired reminder for the given contact. `reminderDate` must parse to a valid future date. The reminder is scoped to the caller's organization with `createdBy` set to the calling user.



## OpenAPI

````yaml /api-reference/openapi.yaml post /api/reminders
openapi: 3.0.3
info:
  title: Tether Relay and Tether API
  version: 1.0.0
  description: >-
    Route-derived OpenAPI contract generated from tether-relay backend sources.
    Regenerate with scripts/sync-openapi-from-backend.mjs.
servers:
  - url: https://your-instance.example.com
    description: Production
  - url: http://localhost:2212
    description: Local API service
security: []
tags:
  - name: AI
  - name: Applications
  - name: Approval
  - name: Auth
  - name: Automations
  - name: Calls
  - name: Campaigns
  - name: Contact Analytics
  - name: Contact Metrics
  - name: Contact Notes
  - name: Contacts
  - name: Conversation Monitor
  - name: Conversations
  - name: Departments
  - name: Email
  - name: Escalation Dashboard
  - name: Event Logs
  - name: Google Sheets
  - name: Marketplace
  - name: Messages
  - name: Notification Sounds
  - name: Notifications
  - name: Org Snapshots
  - name: Organizations
  - name: Outreach
  - name: Outreach Metrics
  - name: Outreach Sources
  - name: Pipelines
  - name: Processes
  - name: Prompts
  - name: Reminders
  - name: Sms
  - name: Templates
  - name: Traces
  - name: Training
  - name: Upload
  - name: User Snapshots
  - name: Users
  - name: Vertical
  - name: Webchats
  - name: Webhook
paths:
  /api/reminders:
    post:
      tags:
        - Reminders
      summary: Create a reminder for a contact
      description: >-
        Creates an unfired reminder for the given contact. `reminderDate` must
        parse to a valid future date. The reminder is scoped to the caller's
        organization with `createdBy` set to the calling user.
      operationId: post_reminders
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateReminderRequest'
      responses:
        '201':
          description: Reminder created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ReminderMutationResponse'
        '400':
          description: Missing required fields or reminderDate is not a valid future date
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ReminderErrorResponse'
        '404':
          description: Contact not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ReminderErrorResponse'
        '500':
          description: Failed to create reminder
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ReminderErrorResponse'
      security:
        - bearerAuth: []
components:
  schemas:
    CreateReminderRequest:
      type: object
      properties:
        contactId:
          type: string
        note:
          type: string
        reminderDate:
          type: string
          format: date-time
          description: ISO timestamp; must be in the future
        localTimestamp:
          type: string
          description: Caller-supplied local-time representation (optional)
        channelType:
          type: string
          default: sms
        phoneNumber:
          type: string
        messengerId:
          type: string
        webchatId:
          type: string
        contactName:
          type: string
      required:
        - contactId
        - note
        - reminderDate
      additionalProperties: true
      example:
        contactId: 65c2d0e0f0a0b0c0d0e0f0a0
        note: Follow up on demo booking
        reminderDate: '2026-05-22T15:00:00.000Z'
        localTimestamp: 2026-05-22 11:00 EDT
        channelType: sms
        phoneNumber: '+14155550123'
        contactName: Jane Doe
    ReminderMutationResponse:
      type: object
      properties:
        success:
          type: boolean
          enum:
            - true
        message:
          type: string
        data:
          $ref: '#/components/schemas/ReminderDto'
      required:
        - success
        - data
      additionalProperties: true
      example:
        success: true
        message: Reminder created successfully
        data:
          _id: 65f0a0b0c0d0e0f0a0b0c0d0
          contactId: 65c2d0e0f0a0b0c0d0e0f0a0
          organizationId: 65a0e0e0e0e0e0e0e0e0e0e0
          createdBy: 65b1f0a2c3d4e5f6a7b8c9d0
          note: Follow up on demo booking
          reminderDate: '2026-05-22T15:00:00.000Z'
          channelType: sms
          fired: false
          createdAt: '2026-05-18T12:00:00.000Z'
          updatedAt: '2026-05-18T12:00:00.000Z'
    ReminderErrorResponse:
      type: object
      properties:
        success:
          type: boolean
          enum:
            - false
        message:
          type: string
        error:
          type: string
      required:
        - success
      additionalProperties: true
      example:
        success: false
        message: Contact not found
        error: NOT_FOUND
    ReminderDto:
      type: object
      properties:
        _id:
          type: string
        contactId:
          type: string
        organizationId:
          type: string
        createdBy:
          type: string
        note:
          type: string
        reminderDate:
          type: string
          format: date-time
        localTimestamp:
          type: string
        channelType:
          type: string
        phoneNumber:
          type: string
        messengerId:
          type: string
        webchatId:
          type: string
        contactName:
          type: string
        fired:
          type: boolean
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
      additionalProperties: true
      example:
        _id: 65f0a0b0c0d0e0f0a0b0c0d0
        contactId: 65c2d0e0f0a0b0c0d0e0f0a0
        organizationId: 65a0e0e0e0e0e0e0e0e0e0e0
        createdBy: 65b1f0a2c3d4e5f6a7b8c9d0
        note: Follow up on demo booking
        reminderDate: '2026-05-22T15:00:00.000Z'
        channelType: sms
        phoneNumber: '+14155550123'
        contactName: Jane Doe
        fired: false
        createdAt: '2026-05-18T12:00:00.000Z'
        updatedAt: '2026-05-18T12:00:00.000Z'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````