CommunityMentions

npx add-mcp 'https://communitymentions.com/api/mcp'

CommunityMentions plugin

Which subreddits AI answers cite, for AI agents (Claude, ChatGPT, Cursor, Grok Build).

This plugin connects your agent to the CommunityMentions MCP server at https://communitymentions.com/api/mcp (streamable HTTP, no sign-in) and adds a skill that tells the agent which tool to use.

Tools

Tool	What it does
find_subreddits	Describe a product or niche; get up to 10 subreddits where it fits, with how often AI answers cited each and member counts
get_subreddit	One subreddit's AI citations by engine (OpenAI models, Perplexity, Gemini), the kinds of questions those answers were about, and its most-cited threads

The data covers subreddits cited 50+ times in the AI answers CommunityMentions tracks, or where it has placed 50+ verified comments. Read-only.

Try it

• "Which subreddits fit an AI writing tool for marketers?"
• "How often do AI answers cite r/SaaS, and which threads?"

Install

• Claude Code / Cursor / other Agent Plugin hosts: install this repo as a plugin, or add the server yourself: claude mcp add --transport http communitymentions https://communitymentions.com/api/mcp
• Any MCP client: use .mcp.json / mcp.json in this repo.

Also in the official MCP registry as com.communitymentions/communitymentions. Browse the data: https://communitymentions.com/subreddit-finder

License: MIT (this plugin). The data stays CommunityMentions'.