Voice MCP Server

A thin stdio MCP server wrapping the versioned voice REST API (/api/v1/...) with a single tenant API key as a Bearer token. It holds no state and adds no surface to the voice server itself, so it stays in lockstep with the REST API. 24 tools.

Connect

{
  "mcpServers": {
    "stateset-voice": {
      "command": "node",
      "args": ["/absolute/path/to/rust-phone-server/mcp-server/dist/index.js"],
      "env": {
        "STATESET_VOICE_BASE_URL": "https://api.voice.stateset.com",
        "STATESET_VOICE_API_KEY": "YOUR_TENANT_API_KEY"
      }
    }
  }
}

Or with Claude Code, claude mcp add.

Tools

Account and agents

Tool	Maps to
`get_account`	`GET /voice/account`
`list_agents`	`GET /voice/agents`
`get_agent`	`GET /voice/agents/{uuid}`
`create_agent`	`POST /voice/agents` — `agent_key`, `name`, `config`, `publish`
`update_agent`	`PATCH /voice/agents/{uuid}` — creates a new version from `config`

Phone-number routing

Tool	Maps to
`list_phone_numbers`	`GET /voice/phone-numbers`
`upsert_phone_number`	`POST /voice/phone-numbers` — `phone_number`, `direction`, `agent_id`
`delete_phone_number`	`DELETE /voice/phone-numbers/{uuid}`

Knowledge base

Tool	Maps to
`search_knowledge`	`POST /voice/knowledge/search` — `query`, `limit`
`list_knowledge_sources`	`GET /voice/knowledge/sources`
`upsert_knowledge_source`	`POST /voice/knowledge/sources` — `id`, `answer`, `match_phrases`
`delete_knowledge_source`	`DELETE /voice/knowledge/sources/{id}`

Webhooks and API keys

Tool	Maps to
`list_webhook_endpoints`	`GET /webhooks/endpoints`
`upsert_webhook_endpoint`	`POST /webhooks/endpoints` — `url`, `secret`, `events`
`list_api_keys`	`GET /api-keys`
`create_api_key`	`POST /api-keys`
`revoke_api_key`	`DELETE /api-keys/{uuid}`

Calls

Tool	Maps to
`create_realtime_token`	`POST /voice/realtime/token` — short-lived observer token
`create_web_call`	`POST /voice/web-calls` — signed WS URL plus start message, no phone number
`make_call`	`POST /make-call`

Two tools have real-world consequences, so scope the key you give an agent accordingly:

make_call places an actual outbound PSTN call. DNC and TCPA gates apply, but the call is real and billable.
create_api_key mints a tenant credential, returned once. An agent holding this can issue further credentials.

Voice Configuration Voice Operations

Get started

Platform

StateSet One

StateSet Response

StateSet ResponseCX

Temporal Engine

StateSet iCommerce

StateSet Commerce

StateSet EDI

StateSet Mail

StateSet Voice

StateSet NSR

AI Agents

StateSet Sandbox

StateSet ACP

StateSet UCP

StateSet ICP

StateSet Sequencer

StateSet Set L2

StateSet Cloud

Tools

Voice MCP Server

Voice MCP Server

Connect

Tools

Account and agents

Phone-number routing

Knowledge base

Webhooks and API keys

Calls

​Voice MCP Server

​Connect

​Tools

​Account and agents

​Phone-number routing

​Knowledge base

​Webhooks and API keys

​Calls

​Related

Voice MCP Server

Connect

Tools

Account and agents

Phone-number routing

Knowledge base

Webhooks and API keys

Calls

Related