JustCall MCP Server
Let an AI agent place JustCall voice calls and send SMS for sales follow-up, reminders, and support touchpoints from MCP.
Overview
JustCall MCP Server is an MCP server for the Grow phase that lets agents make voice calls and send SMS through JustCall APIs.
What is this MCP server?
- Voice calls and SMS through JustCall APIs via MCP
- Hosted remotes: streamable-http and SSE at mcp.justcall.host
- Version 1.2.0 with GitHub source (saaslabsco/justcall-mcp-server)
- Targets LLMs and AI agents automating outbound communication
- 2 remote transports (streamable-http, SSE)
- GitHub: saaslabsco/justcall-mcp-server
Community signal: 26 GitHub stars.
What problem does it solve?
Builders want agents to call or text customers but lack a maintained telephony bridge in the agent stack.
Who is it for?
Indie operators with a JustCall account who want MCP-driven outbound calls and SMS for support or sales follow-up.
Skip if: Builders without telephony budget, regulated calling needs without legal review, or teams that only need in-app chat.
What do I get? / Deliverables
Registered agents can invoke JustCall voice and SMS tools over hosted MCP instead of custom telephony code per campaign.
- Agent-callable voice and SMS actions via MCP
- Hosted MCP endpoint without self-hosting telephony middleware
- Automated follow-up and support touchpoint workflows
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Journey fit
Outbound voice and SMS bridges customer conversations after you have something to sell or support—typical grow-phase lifecycle and support automation. JustCall exposes telephony and texting so agents can follow up on leads, confirm appointments, or run lightweight support outreach without building a custom Twilio stack.
How it compares
Hosted telephony MCP integration, not an agent skill or generic CRM plugin.
Common Questions / FAQ
Who is JustCall MCP Server for?
Solo builders and small teams using AI agents who already use or plan to use JustCall for voice and SMS.
When should I use JustCall MCP Server?
Use it in grow and support workflows when an agent should place calls or send texts as part of follow-up, reminders, or light support automation.
How do I add JustCall MCP Server to my agent?
Add the remote MCP URL (streamable-http or SSE at mcp.justcall.host) in your client config and authenticate with your JustCall API credentials per their docs.