> ## 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.

# List available server-side tools for Voice AI agents

> Returns the static catalog of server tools that can be attached to a Voice AI agent (e.g. `checkBusinessHours`, `getContact`, `checkAvailability`, `transfer`). Includes `disabled` flags and `disabledReason` for tools that are coming soon.



## OpenAPI

````yaml /api-reference/openapi.yaml get /api/calls/voice-ai/tools
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/calls/voice-ai/tools:
    get:
      tags:
        - Calls
      summary: List available server-side tools for Voice AI agents
      description: >-
        Returns the static catalog of server tools that can be attached to a
        Voice AI agent (e.g. `checkBusinessHours`, `getContact`,
        `checkAvailability`, `transfer`). Includes `disabled` flags and
        `disabledReason` for tools that are coming soon.
      operationId: get_calls_voice_ai_tools
      responses:
        '200':
          description: Tool catalog
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CallsVoiceAiToolsResponse'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CallsErrorResponse'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CallsErrorResponse'
      security:
        - bearerAuth: []
components:
  schemas:
    CallsVoiceAiToolsResponse:
      type: object
      properties:
        tools:
          type: array
          items:
            $ref: '#/components/schemas/CallsVoiceAiTool'
      required:
        - tools
      additionalProperties: true
      example:
        tools:
          - key: checkBusinessHours
            label: Check business hours
            description: >-
              Returns whether the org is currently open and the next open
              window.
            disabled: false
    CallsErrorResponse:
      type: object
      description: >-
        Error envelope used across most calls endpoints. Some endpoints wrap a
        string error; validation endpoints (parseContractInput) return a
        structured `error` object with `code` and `details`.
      properties:
        success:
          type: boolean
          enum:
            - false
        error:
          oneOf:
            - type: string
            - type: object
              properties:
                code:
                  type: string
                message:
                  type: string
                details:
                  type: array
                  items:
                    type: object
                    additionalProperties: true
              additionalProperties: true
        code:
          type: string
          description: >-
            Stable error code on certain errors (e.g. `NUMBER_NOT_ON_TRUNK`,
            `AGENT_NOT_SYNCED`, `OUTBOUND_IN_FLIGHT`).
      additionalProperties: true
      example:
        success: false
        error: Call not found
    CallsVoiceAiTool:
      type: object
      properties:
        key:
          type: string
          description: >-
            Stable identifier (e.g. `checkBusinessHours`, `getContact`,
            `checkAvailability`, `transfer`).
        label:
          type: string
        description:
          type: string
        disabled:
          type: boolean
        disabledReason:
          type: string
      required:
        - key
        - label
        - description
      additionalProperties: true
      example:
        key: checkBusinessHours
        label: Check business hours
        description: Returns whether the org is currently open and the next open window.
        disabled: false
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````