Connect · Cursor

Check subreddit rules and find buyers from inside Cursor

You are building in Cursor anyway. Add Kasspian as an MCP server and you can ask, without switching tabs, whether a subreddit allows your launch post and where people are asking for what you are making.

Add it to Cursor

1. Add the server to your MCP config: ~/.cursor/mcp.json for every project, or .cursor/mcp.json inside one.
2. Reload Cursor so it picks up the server, and check it shows as connected in the MCP settings.
3. Ask the agent one of the questions below. The signed-in tools open a Kasspian sign-in the first time you use one.

The config

{
  "mcpServers": {
    "kasspian": {
      "url": "https://kasspian.com/api/mcp"
    }
  }
}

Ask it, no account needed

• “Can I post my launch in r/SideProject, and is there a weekly thread for it?”
• “Find three places where people ask for a tool like the one in this repo.”
• “Validate this idea before I build more: a CLI that writes changelogs from commits.”

Ask it once you sign in

• “List my new threads.”
• “Write the reply for the newest one.”

What each tool does

• check_subreddit_rules Whether a subreddit lets a founder post, comment or share a link, with the source and the date it was read. An inferred read says so.
• find_people_asking The real places where the buyers of a business already ask for something like it: three without an account, each with why, the move, a source when live search opened it, and whether you can post there.
• validate_idea A scored verdict on an idea or a live site: who pays, the biggest risk, the cheapest test, with live sources when the daily search budget allows.
• my_new_threads The live threads waiting for a reply on your plans, newest first, each with the asker's words, the link, the room's rule and whether a reply is already written. On a paid plan; a free plan gets the count.
• draft_reply The reply for one of those threads, written to that room's rules, or written now if there is none yet. Uses your plan's written replies, the same as the site.
• mark_reply After you post from your own account, record it: sent, then replied, signed up or paid, with the Reddit account and the amount. Kasspian then checks the thread daily and counts the revenue.

What it will not do

Post anywhere for you. Every answer carries its read date and sources, and a read of a room’s access is hedged because it is an inference. You post from your own account, after you have read the room’s rules. Signing in asks only for your Kasspian account; the connector sees your plans and nothing else.