protect-mcp

Our take

Policy gateway that wraps any MCP server and evaluates every tool call against a Cedar policy (AWS's IAM language), denying on any error, missing engine, or evaluation failure — it even refuses to start in enforce mode unless a startup self-test proves a known-forbidden action is denied. Each decision gets an Ed25519-signed, offline-verifiable receipt, and the workflow is sensible: shadow-mode observation, a localhost dashboard with an approval queue, auto-drafted policies, then enforcement. MIT, TypeScript, npx-runnable and local-first, but it is a three-person shop with 8 stars, the '3 IETF Internet-Drafts' are self-authored submissions, and the ~1,850 npm downloads/week look mirror-inflated given 30 releases since March; the paid ScopeBlind service adds hosted digest anchoring, though the free local gate stands alone. For teams putting agents in front of consequential tools who want deny-by-default enforcement with a cryptographic audit trail.

reviewed by hand · 2026-07-05

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Verification record

last verified

yesterday

github stars

8

last commit

3 days ago

archived

no

license

MIT

npm

protect-mcp

downloads / wk

1.8k

latest version

0.7.4

in registry since

2026-06-28

github.com/scopeblind/scopeblind-gateway