# CastleCall MCP

> Use this tool when you need to broadcast voice messages over a home PA system, solving the problem of manual announcements and enabling automated voice notifications. It takes text input and outputs voice messages through local or cloud-based providers, such as Piper or ElevenLabs, via the Model Context Protocol. Ideal for use in smart home automation and public address systems.

Canonical page: https://skillsregistry.net/skills/ctf2009-castlecall-mcp  
JSON: https://api.skillsregistry.net/v1/skills/ctf2009-castlecall-mcp

## Description

Exposes a text-to-speech announcement tool for the CastleCall home PA system on Raspberry Pi. It enables users to broadcast voice messages using local Piper or cloud-based ElevenLabs providers through the Model Context Protocol.

## Trust

- **Trust score (0–1):** 0.98
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** iot-hardware
- **Updated:** 2026-09-19

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/n9bb4aslol)
- **Repository:** <https://github.com/ctf2009/castlecall-mcp>

## Use it

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": "ctf2009-castlecall-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/ctf2009-castlecall-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/ctf2009-castlecall-mcp/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