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

# Update a contact



## OpenAPI

````yaml /api-reference/openapi.json patch /contacts/{contact_id}
openapi: 3.1.0
info:
  title: LobbyStack API
  version: v1
  description: >-
    Read calls, contacts, appointments and messages, book appointments, and
    subscribe to webhooks. Authenticate with an API key in the Authorization
    header. Each key allows 120 requests per minute by default.
servers:
  - url: https://app.lobbystack.com/api/v1
security:
  - bearerAuth: []
tags:
  - name: Business
  - name: Calls
  - name: Contacts
  - name: Appointments
  - name: Messages
  - name: Knowledge
  - name: Webhooks
paths:
  /contacts/{contact_id}:
    patch:
      tags:
        - Contacts
      summary: Update a contact
      operationId: updateContact
      parameters:
        - name: contact_id
          in: path
          required: true
          description: The contact id.
          schema:
            type: string
            format: uuid
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ContactUpdate'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                required:
                  - data
                properties:
                  data:
                    $ref: '#/components/schemas/Contact'
        '400':
          description: The request is invalid (invalid_request).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: The API key is missing, invalid, or revoked (unauthorized).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: The API key lacks the contacts:write scope (insufficient_scope).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not found (not_found).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: The request conflicts with the current state.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: >-
            Too many requests (rate_limited). Wait for the Retry-After header's
            number of seconds.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
          headers:
            Retry-After:
              schema:
                type: integer
              description: Seconds to wait.
      security:
        - bearerAuth: []
components:
  schemas:
    ContactUpdate:
      type: object
      properties:
        name:
          anyOf:
            - type: string
              minLength: 1
              maxLength: 200
            - type: 'null'
        phone:
          description: Phone number in E.164 format.
          type: string
          pattern: ^\+[1-9]\d{6,14}$
        email:
          anyOf:
            - type: string
              maxLength: 320
              format: email
            - type: 'null'
        locale:
          anyOf:
            - type: string
              enum:
                - en
                - fr
            - type: 'null'
        timezone:
          anyOf:
            - type: string
              minLength: 1
              maxLength: 80
            - type: 'null'
      additionalProperties: false
    Contact:
      type: object
      properties:
        id:
          description: Stable identifier (UUID).
          type: string
          format: uuid
        name:
          anyOf:
            - type: string
            - type: 'null'
        phone:
          anyOf:
            - type: string
            - type: 'null'
        email:
          anyOf:
            - type: string
            - type: 'null'
        locale:
          anyOf:
            - type: string
            - type: 'null'
        timezone:
          anyOf:
            - type: string
            - type: 'null'
        created_at:
          description: ISO 8601 timestamp in UTC.
          type: string
          format: date-time
        updated_at:
          description: ISO 8601 timestamp in UTC.
          type: string
          format: date-time
      required:
        - id
        - name
        - phone
        - email
        - locale
        - timezone
        - created_at
        - updated_at
      additionalProperties: false
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              enum:
                - invalid_request
                - unauthorized
                - forbidden
                - insufficient_scope
                - not_found
                - conflict
                - idempotency_key_reused
                - idempotency_request_in_progress
                - booking_disabled
                - booking_requires_confirmation
                - slot_unavailable
                - rate_limited
                - rate_limit_unavailable
                - method_not_allowed
                - internal_error
            message:
              type: string
            details:
              type: array
              items:
                type: object
                properties:
                  path:
                    type: string
                  message:
                    type: string
                required:
                  - path
                  - message
                additionalProperties: false
          required:
            - code
            - message
          additionalProperties: false
      required:
        - error
      additionalProperties: false
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        An API key from Settings > API keys. Scopes: business:read,
        business:write, calls:read, contacts:read, contacts:write,
        appointments:read, appointments:write, messages:read, knowledge:write,
        webhooks:manage.

````