# matrix-mcp

> matrix-mcp — cosmic-fire-eng-matrix-mcp. Use this tool when you need to integrate a Matrix server with external applications, enabling features like room management, message searching, and file sharing across multiple homeservers. It solves problems of communication and collaboration by providing a safe and controlled interface for interacting with Matrix rooms and users. The tool accepts inputs like room IDs, user IDs, and message content, and outputs data such as room lists, message histories, and file transfer status.

Canonical page: https://skillsregistry.net/skills/cosmic-fire-eng-matrix-mcp  
JSON: https://api.skillsregistry.net/v1/skills/cosmic-fire-eng-matrix-mcp

## Description

MCP server for Matrix that lets Claude list rooms, search/read messages, send messages and files, react, create rooms, and invite users, with multi-homeserver support and safe-by-default writes; no end-to-end encryption.

## Trust

- **Trust score (0–1):** 0.68
- **Verification tier:** scanned
- **Last scanned:** 2026-08-29

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** security
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/vnuqx226g3)
- **Repository:** <https://github.com/cosmic-fire-eng/matrix-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": "cosmic-fire-eng-matrix-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/cosmic-fire-eng-matrix-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/cosmic-fire-eng-matrix-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