# JustCall MCP Server

> Use this tool when you need to integrate voice calling and SMS capabilities into your AI applications, enabling LLMs and AI agents to make voice calls and send SMS via APIs. It solves problems related to automated communication, customer engagement, and notification systems. The tool accepts API inputs and outputs voice calls and SMS, ideal for use cases such as customer support, reminders, and alerts.

Canonical page: https://skillsregistry.net/skills/host-justcall-mcp-justcall-mcp-server  
JSON: https://api.skillsregistry.net/v1/skills/host-justcall-mcp-justcall-mcp-server

## Description

JustCall MCP Server enables LLMs and AI agents to make voice calls and send SMS via JustCall APIs.

## Trust

- **Trust score (0–1):** 0.99
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 0.0.4
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-09-28

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/host.justcall.mcp%2Fjustcall-mcp-server)
- **Repository:** <https://github.com/saaslabsco/justcall-mcp-server>

## Use it

MCP endpoint published by the skill: `https://mcp.justcall.host/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "host-justcall-mcp-justcall-mcp-server"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/host-justcall-mcp-justcall-mcp-server` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/host-justcall-mcp-justcall-mcp-server/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt