JustCall MCP Server — Claude Code MCP server setup
Connects AI models to telephony infrastructure. Useful when an agent must trigger text messages and inspect call logs.
claude mcp add --transport http justcall-mcp-server https://mcp.justcall.host/mcpWhat JustCall MCP Server does
This remote MCP server exposes telephony endpoints to LLMs through Streamable HTTP at https://mcp.justcall.host/mcp. Models can dispatch outbound SMS messages, inspect conversation threads, and retrieve event sequences for phone calls.
The server exposes 66 tools covering call records and messaging threads. Agents can update operator availability flags via update_user_availability, assign tags to conversations, or ban abusive numbers directly.
Connecting requires credentials from the JustCall developer dashboard. Without a valid Bearer token, endpoints like /mcp reject incoming requests. Account rate limits still apply.
What it helps with
- dispatch an outbound SMS via JustCall
- retrieve call logs and event timelines
- update operator availability status
- add phone numbers to the blacklist
Example prompts for the agent
- Send an SMS reminder to +19876543210 using JustCall
- Check the most recent inbound SMS reply from contact ID 305
- Show call logs from today and verify available team agents
How to install JustCall MCP Server
Platform CLI: remote server
claude mcp add --transport http justcall-mcp-server https://mcp.justcall.host/mcpPlatform CLI: remote server
codex mcp add justcall-mcp-server --url https://mcp.justcall.host/mcpConfig file
{
"mcpServers": {
"justcall-mcp-server": {
"url": "https://mcp.justcall.host/mcp"
}
}
}Config file
{
"servers": {
"justcall-mcp-server": {
"type": "http",
"url": "https://mcp.justcall.host/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http justcall-mcp-server https://mcp.justcall.host/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about JustCall MCP Server
How do I install JustCall MCP Server in Claude Code?
Run claude mcp add --transport http justcall-mcp-server https://mcp.justcall.host/mcp in your terminal.
What does JustCall MCP Server do?
It links LLMs to JustCall telephony, letting them send SMS messages, review call logs, and manage CRM contacts.
What credentials are required to connect?
You need a JustCall API key and secret from the developer settings. Pass them as a Bearer token in request headers.
