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Last updated 27 October 2026

Kasspian inside Claude and ChatGPT

Your assistant can write a reply. It cannot tell you which room will delete it, or where the people who pay are asking today. Add Kasspian as a connector and it can. Three tools work with no account; sign in and three more work on your own plans, with your threads, your written replies and your marks.

Step by step for Claude, ChatGPT and Cursor, with questions to ask it.

The address

https://kasspian.com/api/mcp

Claude

  1. Settings, then Connectors.
  2. Add custom connector. Name it Kasspian, paste the address, Continue, and pick Sign in when needed.
  3. In a chat, enable it from the tools menu, then ask: does r/startups let me mention my product? To use your plans, ask: what threads are waiting for me? Claude asks you to sign in to Kasspian once.

ChatGPT

  1. Settings, Apps and connectors, then Advanced, and turn on Developer mode.
  2. Create a connector: name Kasspian, the address above, authentication OAuth (it registers itself).
  3. Start a chat with the connector on and ask where the people who pay for your product are asking this week.

Cursor and other MCP clients

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

Without an account

  • 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.

Signed in to Kasspian

  • 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 result carries its read date and sources, an access read is hedged because it is an inference, and the posting stays yours, 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. The same threads and replies are in your workspace.

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