Can I use Telnyx as a CLI?

Yes. KosmoKrator exposes a Telnyx CLI through kosmo integrations:call and the provider shortcut command. Commands can return JSON for scripts, CI, and coding agents.

Can I expose Telnyx through MCP?

Yes. The KosmoKrator MCP gateway can expose selected Telnyx tools to clients such as Claude Code, Cursor, Codex, and other MCP-compatible tools.

Where are Telnyx credentials stored?

Telnyx credentials are configured in KosmoKrator's local integration settings and reused by CLI, Lua, and MCP gateway surfaces.

Can I deny write access for Telnyx MCP tools?

Yes. Start the gateway with --write=deny for read-only clients, or use ask/allow only for trusted workspaces.

communication

Telnyx MCP Integration for Claude Code

Connect Telnyx to Claude Code through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write API key auth

Submit Telnyx feedback View package source

Connect Telnyx to Claude Code

Connect local KosmoKrator integrations to Claude Code through one scoped MCP gateway entry.

Add KosmoKrator as a stdio MCP server in the Claude Code project config and select the integrations that should be visible. The gateway is local, scoped to this integration, and starts with --write=deny so Claude Code can inspect read-capable tools without receiving write access by default.

Telnyx MCP Config for Claude Code

Claude Code can launch the local kosmo binary directly from the project MCP config.

{
  "mcpServers": {
    "kosmokrator-telnyx": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=telnyx",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=telnyx --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Telnyx instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Telnyx Tools Visible to Claude Code

Claude Code sees stable MCP tool names generated from the Telnyx integration catalog.

MCP tool	Source function	Type	Description
`integration__telnyx__telnyx_list_phone_numbers`	`telnyx.telnyx_list_phone_numbers`	Read	List phone numbers on your Telnyx account. Returns phone number IDs, numbers in E.164 format, status, and billing details.
`integration__telnyx__telnyx_get_phone_number`	`telnyx.telnyx_get_phone_number`	Read	Get details for a specific phone number by its ID. Returns the number, status, connection, and billing information.
`integration__telnyx__telnyx_list_messages`	`telnyx.telnyx_list_messages`	Read	List SMS and MMS messages sent and received on your Telnyx account. Supports filtering by direction, phone number, and date range.
`integration__telnyx__telnyx_send_sms`	`telnyx.telnyx_send_sms`	Write	Send an SMS or MMS message via Telnyx. Provide a sender phone number (from your Telnyx account), a destination number, and the message body.
`integration__telnyx__telnyx_list_calls`	`telnyx.telnyx_list_calls`	Read	List voice calls made on your Telnyx account. Returns call session IDs, status, participants, and duration.
`integration__telnyx__telnyx_get_call`	`telnyx.telnyx_get_call`	Read	Get details for a specific voice call by its call session ID. Returns participants, status, duration, and call metadata.
`integration__telnyx__telnyx_list_call_records`	`telnyx.telnyx_list_call_records`	Read	List call recordings stored on your Telnyx account. Returns recording IDs, associated call sessions, download URLs, duration, and creation timestamps.

Related Telnyx Pages

Telnyx CLIUse direct JSON commands instead of MCP discovery. Telnyx MCPFull gateway reference and MCP tool names. KosmoKrator for Claude CodeClient-level gateway setup.