# mailbox-mcp

> mailbox-mcp — ellgree-mailbox-mcp. Use this tool when you need to facilitate inter-agent communication through a file-based mailbox system. It solves problems of agent messaging and data exchange by providing a server for mailbox management, accepting inputs such as messages and agent identifiers, and outputting received messages. Ideal for use in distributed systems or multi-agent environments where reliable communication is crucial.

Canonical page: https://skillsregistry.net/skills/ellgree-mailbox-mcp  
JSON: https://api.skillsregistry.net/v1/skills/ellgree-mailbox-mcp

## Description

MCP server for inter-agent mailbox communication using file-based mailboxes in .claude directories.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** file-system
- **Updated:** 2026-08-30

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/inxn0vxpgu)
- **Repository:** <https://github.com/EllGree/mailbox-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": "ellgree-mailbox-mcp"
    }
  }
}
```

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