# Baryon MCP

> Baryon MCP — combor-baryon-mcp. Use this tool when you need to integrate AI assistants with secure email services, enabling controlled access to email data while maintaining user privacy. Baryon MCP solves the problem of securely bridging AI assistants with email accounts, allowing for search, reading, and draft creation within strict permission limits. It is ideal for users requiring local, permission-controlled email management with AI assistance.

Canonical page: https://skillsregistry.net/skills/combor-baryon-mcp  
JSON: https://api.skillsregistry.net/v1/skills/combor-baryon-mcp

## Description

Baryon connects MCP-compatible AI assistants to Proton Mail through a local bridge, enabling email search, reading, attachment handling, and draft creation while enforcing deliberate permission limits. It runs locally and cannot send, delete, or modify mail.

## 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:** communication
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/b9sx6b6mvb)
- **Repository:** <https://github.com/combor/baryon-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": "combor-baryon-mcp"
    }
  }
}
```

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