sebbi.pro
Sealed MCP

A receipt for every tool call your AI makes

Paste any MCP server's address. You get a sealed address back. Use it in Claude, ChatGPT, Cursor or any MCP app, and every tool call comes back with a receipt anyone can check against Bitcoin. Nothing else changes.

Your sealed address:

Proof, not logs
Each call is sealed into the sebbi.pro chain and anchored to Bitcoin: which tool, a fingerprint of the request and the answer, and when.
Your data stays yours
Only fingerprints are sealed. Content and your login pass straight through and are never stored.
Free
Up to 2,000 sealed calls a day per server, free. Verifying a receipt is always free.

How to use it

  1. Seal the server above and copy the sealed address.
  2. In your AI app, add it as a custom connector (Claude: Settings, Connectors, Add custom connector).
  3. Use the server exactly as before. Every tool result now carries _meta["pro.sebbi/receipt"] with a link to verify it.

What a receipt looks like

"pro.sebbi/receipt": {
  "tool": "search_docs",
  "arguments_sha256": "9f2c...", "result_sha256": "41ab...",
  "block": 10482, "seal": "e3b0...",
  "sealed_utc": "2026-10-18T15:20:11Z",
  "verify": "https://sebbi.pro/forever?block=10482"
}

Is the server itself safe? Every sealed server is also graded by MCP Shield. Want the whole receipt standard? AI-Decision-Receipt.