FractalAI Agent Passport

Verifies ML-DSA-65 (NIST FIPS 204) signed receipts and agent passports offline against a pinned key, and exposes pay-per-call x402 tools (USDC on Base) that return ML-DSA-65 signed receipts; unpaid calls return the payment challenge. Free tools: `verify_passport`, `lookup_agent`, `list_fractalai_proofs`; paid tools include `seal_ml_dsa`, `verify_proof`, `notarize_decision`, `witness_payment`. Install: `npx -y @fractalai/agent-passport-mcp`. Transport: stdio. Auth: none (paid tools settle over x402). License: MIT. Registry id `io.github.johnInarti/agent-passport`. Open verifier and conformance vectors: https://github.com/johnInarti/pqc-receipts-colosseum.

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