[ Confirm upstream transport MCP ]

How to Use Telnyx MCP Server with Bifrost

[ MCP SERVER SUMMARY ]

Telnyx MCP server summary

Official MCP server for building AI-powered communication apps. Create voice assistants, send SMS campaigns, manage phone numbers, and integrate real-time messaging with enterprise-grade reliability. Includes remote streamable-http and sse servers. Connect Telnyx through Bifrost MCP Gateway to centralize access control, virtual keys, and tool-call observability for your AI assistants.

Property	Details
Company	Upstream maintainer
Connection type	Confirm upstream transport
Authentication	Varies by upstream server
Package or endpoint	See upstream documentation
Capabilities	Telnyx tools over MCP, AI assistant connectivity, Governed tool access through Bifrost
Official documentation	Telnyx MCP documentation

Before you start

Review the Telnyx upstream documentation for its installation requirements
Obtain any credentials required by the upstream service
A running Bifrost MCP Gateway instance

What you can do with Telnyx

Official MCP server for building AI-powered communication apps. Create voice assistants, send SMS campaigns, manage phone numbers, and integrate real-time messaging with enterprise-grade reliability. Includes remote streamable-http and sse servers.
Expose Telnyx tools to Claude, Cursor, and other MCP clients through one endpoint
Apply virtual keys, tool allowlists, and audit logging at the gateway

MCP ServerIntegration

[ HOW TO CONNECT ]

Connect Telnyx to Bifrost in three steps

Install Bifrost

Start the gateway locally or deploy in your VPC.

npx -y @maximhq/bifrost

Add Telnyx in MCP Gateway

Open MCP Gateway in the Bifrost dashboard, click New MCP Server, and select the transport documented by the upstream server. Or register via the API below.

• Confirm the transport, command or endpoint, and authentication requirements in the Telnyx upstream documentation.

• Replace every placeholder in the example before sending the request.

Point clients at Bifrost /mcp

Configure Claude Desktop, Cursor, or Claude Code to use your Bifrost endpoint with a virtual key instead of connecting directly to Telnyx.

{
  "mcpServers": {
    "bifrost": {
      "url": "http://localhost:8080/mcp",
      "headers": {
        "Authorization": "Bearer vk_your_virtual_key"
      }
    }
  }
}

[ EXAMPLE CONFIG ]

Register Telnyx via API

Add this MCP client with a POST to /api/mcp/client. See Connecting to MCP Servers for full options.

# For a remote HTTP or SSE server:
curl -X POST http://localhost:8080/api/mcp/client \
  -H "Content-Type: application/json" \
  -d '{
    "name": "telnyx",
    "connection_type": "<http|sse>",
    "connection_string": "<upstream MCP endpoint>",
    "tools_to_execute": ["*"]
  }'

# For a local STDIO server:
curl -X POST http://localhost:8080/api/mcp/client \
  -H "Content-Type: application/json" \
  -d '{
    "name": "telnyx",
    "connection_type": "stdio",
    "stdio_config": {
      "command": "<upstream command>",
      "args": ["<arg>"]
    },
    "tools_to_execute": ["*"]
  }'

[ WHY BIFROST ]

Run Telnyx through one governed gateway

Access control

Virtual keys, RBAC, and tool allowlists per team or agent.

Cost governance

Attribute MCP tool spend alongside LLM usage in one view.

Observability

Log every tool call with latency, server, and virtual key metadata.

Credential isolation

Upstream secrets stay in the gateway — not on every laptop.

[ FAQ ]

Common questions

What does the Telnyx MCP server do?

Official MCP server for building AI-powered communication apps. Create voice assistants, send SMS campaigns, manage phone numbers, and integrate real-time messaging with enterprise-grade reliability. Includes remote streamable-http and sse servers. The exact tools available depend on the upstream server version and configuration.

How do I connect Telnyx to Bifrost?

Check the upstream documentation to determine whether Telnyx uses STDIO, Streamable HTTP, or SSE. Then add it as an MCP client in Bifrost using the corresponding command or endpoint.