FidusGate: understand MCP decisions and verify signed receipts

FidusGate is an open-source reference Model Context Protocol (MCP) gateway with Cedar authorization, Ed25519-signed receipts, and a receipt-first console.

Explore the interactive demo

Inspect an allowed or denied tool-call decision and its reason, try a policy example, and verify a sample receipt. The interactive console requires JavaScript.

This browser-only demo uses synthetic records and a public demo key. It does not connect an agent, evaluate Cedar, or execute tools. Receipt input stays in your browser. A valid signature does not establish issuer trust or prove execution. FidusGate is not a production-hardened security product.

Run the gateway-connected console

The connected console uses gateway records and role-scoped development sessions. It includes Decisions, Policy playground, Receipt verifier, Transactions, Governance, Forensics, and Sandbox workspaces.

• Source code and project overview
• Local setup guide
• Documentation
• Security scope and vulnerability reporting
• Documentation index for agents