This server connects Claude to the Groups.io REST API, letting you query and manage mailing list data directly from your conversation. You get read access to subscriptions, messages, topics, archives, members, files, wiki pages, and events, plus write operations to update subscription settings or unsubscribe from groups. Useful when you're working with community data from Groups.io and want to search archives, pull member lists, or adjust your email preferences without leaving your workflow. Requires a Groups.io API key and runs via stdio transport with Node.js.
MCP server for consuming and managing Groups.io data via the Groups.io REST API.
git clone https://github.com/ke4qqq/groupsio-mcp-server.git
cd groupsio-mcp-server
npm install
Add the server to your MCP client configuration. The exact file varies by client:
| Client | Config file |
|---|---|
| Claude Desktop | ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) |
| Kiro | ~/.kiro/settings/mcp.json |
| VS Code (Copilot) | .vscode/mcp.json in your workspace |
Add this entry to the mcpServers object in your config:
{
"mcpServers": {
"groupsio": {
"command": "node",
"args": ["/path/to/groupsio-mcp-server/index.js"],
"env": {
"GROUPSIO_API_KEY": "your_key_here"
}
}
}
}
| Package | Version | License | Purpose |
|---|---|---|---|
| @modelcontextprotocol/sdk | ^1.29.0 | MIT | MCP server framework and stdio transport |
| zod | ^4.3.6 | MIT | Input schema validation |
| Tool | Description |
|---|---|
list_subscriptions | List all groups you're subscribed to |
get_group | Get group settings by ID or name |
get_subgroups | Get subgroups of a parent group |
get_subgroups_by_category | Get subgroups organized by category |
get_topics | Get message threads in a group |
get_topic | Get messages within a specific topic |
get_message | Get a single message by number |
get_messages | Get messages in a group |
search_archives | Search message archives |
get_members | Get members of a group |
get_member_directory | Get public member directory |
search_members | Search members by email or name |
get_hashtags | Get hashtags in a group |
get_message_history | Get monthly message count history |
get_permissions | Get your permissions in a group |
get_events | Get upcoming events |
get_files | Get files in a group |
get_wiki_pages | Get wiki pages in a group |
get_databases | Get databases in a group |
update_subscription | Update your subscription settings (email delivery, message selection, etc.) |
delete_subscription | Unsubscribe from a group |
This project is released under the MIT-0 license.
Written with the aid of Kiro.
GROUPSIO_API_KEY*secretGroups.io API key from https://groups.io/settings/apikeys
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