claudecodex

protect-mcp

Cedar policy enforcement + Ed25519 signed receipts for every Claude Code tool call. First cryptographic governance plugin — decisions are policy-gated before they run and every decision produces a tamper-evident receipt verifiable offline.

42,461 on GitHubby Tom Farleyv0.1.6MITupdated 4 days agogovernance
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Plugin protect-mcp from marketplace claude-code-workflows in wshobson/agents. Commands read from the repo's manifest — 4 days ago.

This plugin runs code on your machine — its hooks fire automatically on events like tool use. The exact commands are listed below; read them before installing.

What it installs

Skills (1)

  • protect-mcp-setup

    Configure Cedar policy enforcement and Ed25519 signed receipts for Claude Code tool calls. Use when setting up projects that need cryptographic audit trails, policy-gated tool execution, or compliance-ready evidence of agent actions.

Slash commands (2)

  • /protect-mcp:audit-chain

    Verify every receipt in ./receipts/receipts.jsonl against the signer's public key. Detects tampered or malformed receipts across the audit trail.

  • /protect-mcp:verify-receipt

    Verify a single Ed25519-signed receipt file against the signer's public key. Returns exit 0 if valid, 1 if tampered, 2 if malformed or the key is missing.

Subagents (2)

  • policy-enforcer

    Cedar policy author and reviewer for Claude Code tool calls. Writes, audits, and explains Cedar policies that govern Bash, Edit, Write, WebFetch, and other tools. Use when you need declarative, formally verifiable rules for what an AI agent can and cannot do in a project.

  • receipt-verifier

    Expert in Ed25519 signed receipts, JCS canonicalization, and offline verification. Use when you need to verify receipt authenticity, audit a receipts file, detect tampering, or explain why verification failed.

Hooks (2)

  • PreToolUse

    "${CLAUDE_PLUGIN_ROOT}"/hooks/evaluate.sh

  • PostToolUse

    "${CLAUDE_PLUGIN_ROOT}"/hooks/sign.sh

View source on GitHub veritasacta.com

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