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Governed email for AI agents (Mailbuttons / mbag.ai): sandbox inboxes, policy gate, audit log.
Mailbuttons (mbag.ai) is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 78/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding Mailbuttons (mbag.ai) to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add com.mailbuttons/mcp-server https://mailbuttons.com/api/v1/mcp/rpcReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-10-15T12:24:44.365591Z",
"publishedAt": "2026-10-15T12:24:44.365591Z",
"statusChangedAt": "2026-10-15T12:24:44.365591Z"
}
},
"server": {
"name": "com.mailbuttons/mcp-server",
"title": "Mailbuttons (mbag.ai)",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://mailbuttons.com/api/v1/mcp/rpc",
"type": "streamable-http",
"headers": [
{
"name": "Authorization",
"isSecret": true,
"isRequired": true,
"description": "Bearer token: a scoped Mailbuttons MCP token, sent as 'Bearer mb_sandbox_...' (or mb_production_... once promoted). Get one free: sign in with an email code to get an mbk_ API key, then POST https://mailbuttons.com/api/v1/mcp/sandbox-inboxes with it. Guide: https://mailbuttons.com/developers/#mcp"
}
]
}
],
"version": "0.1.3",
"packages": [
{
"version": "0.1.1",
"transport": {
"type": "stdio"
},
"identifier": "@mailbuttons/mcp-server",
"runtimeHint": "npx",
"registryType": "npm",
"environmentVariables": [
{
"name": "MAILBUTTONS_API_KEY",
"format": "string",
"isSecret": true,
"isRequired": true,
"description": "A scoped Mailbuttons MCP token (mb_sandbox_...). Sandbox-by-default; external send requires human promotion."
},
{
"name": "MAILBUTTONS_API_URL",
"format": "string",
"default": "https://mailbuttons.com",
"description": "Backend base URL. Defaults to https://mailbuttons.com; set for self-hosted or local."
}
]
}
],
"repository": {
"url": "https://github.com/mailbuttons/mcp-server",
"source": "github"
},
"websiteUrl": "https://mailbuttons.com",
"description": "Governed email for AI agents (Mailbuttons / mbag.ai): sandbox inboxes, policy gate, audit log."
}
}