Inspect and control Asterisk (AMI) and FreeSWITCH (ESL) PBX servers from your AI assistant.
To add pbx-mcp to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 10 environment variables, listed below.
Install
npx -y pbx-mcp@0.1.4Environment variables
ASTERISK_AMI_HOSTSet in your MCP configASTERISK_AMI_PORTSet in your MCP configASTERISK_AMI_USERNAMESet in your MCP configASTERISK_AMI_PASSWORDSet in your MCP configASTERISK_AMI_TLSSet in your MCP configFREESWITCH_ESL_HOSTSet in your MCP configFREESWITCH_ESL_PORTSet in your MCP configFREESWITCH_ESL_PASSWORDSet in your MCP configPBX_MCP_ALLOW_WRITESet in your MCP configPBX_MCP_TIMEOUT_MSSet in your MCP configInstall with your client
claude mcp add pbx --env ASTERISK_AMI_HOST=<YOUR_ASTERISK_AMI_HOST> --env ASTERISK_AMI_PORT=<YOUR_ASTERISK_AMI_PORT> --env ASTERISK_AMI_USERNAME=<YOUR_ASTERISK_AMI_USERNAME> --env ASTERISK_AMI_PASSWORD=<YOUR_ASTERISK_AMI_PASSWORD> --env ASTERISK_AMI_TLS=<YOUR_ASTERISK_AMI_TLS> --env FREESWITCH_ESL_HOST=<YOUR_FREESWITCH_ESL_HOST> --env FREESWITCH_ESL_PORT=<YOUR_FREESWITCH_ESL_PORT> --env FREESWITCH_ESL_PASSWORD=<YOUR_FREESWITCH_ESL_PASSWORD> --env PBX_MCP_ALLOW_WRITE=<YOUR_PBX_MCP_ALLOW_WRITE> --env PBX_MCP_TIMEOUT_MS=<YOUR_PBX_MCP_TIMEOUT_MS> -- npx -y pbx-mcp@0.1.4
Run this in a terminal to add the server to Claude Code.
What this does
pbx-mcp exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
ASTERISK_AMI_HOST ASTERISK_AMI_PORT ASTERISK_AMI_USERNAME ASTERISK_AMI_PASSWORD ASTERISK_AMI_TLS FREESWITCH_ESL_HOST FREESWITCH_ESL_PORT FREESWITCH_ESL_PASSWORD PBX_MCP_ALLOW_WRITE PBX_MCP_TIMEOUT_MS
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install pbx-mcp?
Run the Claude Code command in the install section to add pbx-mcp to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with pbx-mcp?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to pbx-mcp as well.
Does pbx-mcp need an API key?
Yes. Before it can run, set these environment variables: ASTERISK_AMI_HOST, ASTERISK_AMI_PORT, ASTERISK_AMI_USERNAME, ASTERISK_AMI_PASSWORD, ASTERISK_AMI_TLS, FREESWITCH_ESL_HOST, FREESWITCH_ESL_PORT, FREESWITCH_ESL_PASSWORD, PBX_MCP_ALLOW_WRITE, PBX_MCP_TIMEOUT_MS. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
Is this your MCP server?
Claim this listing to see its traffic, fix details yourself, and skip the review queue on future updates.
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