Make voice calls and send SMS messages programmatically via JustCall APIs. Built for developers integrating telephony and messaging into AI agents and LLM workflows.
host.justcall.mcp/justcall-mcp-server
https://mcp.justcall.host/mcp
HTTP
No auth required
How models use it and what it is built for.
Make voice calls and send SMS messages programmatically via JustCall APIs. Built for developers integrating telephony and messaging into AI agents and LLM workflows.
Hosted endpoint — paste into any MCP client.
Where to find authoritative docs and source for JustCall.
Paste any of these into Agent Studio after connecting JustCall.
Common questions about connecting and running JustCall.
What can I do with the JustCall MCP server?
You can make outbound voice calls and send SMS messages via JustCall's APIs. The server integrates directly with LLMs and AI agents, letting you add telephony capabilities to your workflows without building custom integrations.
How do I set up authentication?
You'll need JustCall API credentials (typically an API key and secret). Check the JustCall dashboard for your credentials, then configure them as environment variables when deploying the MCP server.
Is there a cost to use this server?
The MCP server itself is free, but you pay JustCall for each SMS sent and voice call made according to their pricing. Visit JustCall's pricing page for current rates.
Can I use this server to receive inbound calls or SMS?
The registry description mentions making calls and sending SMS; check JustCall's API documentation or the server's hosted endpoint for details on inbound message handling capabilities.
What's the difference between this and building calls/SMS directly with JustCall's REST API?
This MCP server wraps JustCall's APIs in a standardized protocol that LLMs and AI agents can use natively. You get the same functionality but integrated seamlessly into your AI workflows without custom HTTP client code.
Connect JustCall to Claude, GPT, Gemini, DeepSeek and 30+ AI models in MCP Agent Studio. Compare answers side-by-side, save reusable agent presets, share runs — all in your browser, no install required.
Open Agent Studio