defensive-engineering

(WIP) Modern E-Commerce Platform Built With MERN Stack. Real Time AI Chatbot, Payment Gateway, Amazon S3 Storage, 2FA Security, and Many More.

Stops agent overspend at the meter: debits prepaid credit in the same transaction that admits the call.

Authority layer between AI agents and PayPal: spend caps, merchant allowlist, expiry, revocation and e-stop, with a hash-chained receipt for every decision. 389 tests.

Verifies EP-AEC evidence chains from the spec text alone. Fails closed; 64 vectors; surfaced a defect in an older revision (-02), confirmed by the maintainers.

Bounds agent authority with expiring leases, a global e-stop, a fault bus and provenance-stamped claims. Fails closed. Zero dependencies. 68 tests.

Turns public OSINT into tiered, sourced claims and refuses out-of-scope targets unless attested.

Groundwork (Jul 2026): gates a local Hardhat 3 compile, test, coverage and deploy path with Python checks. No cloud accounts.

Gates every agent action on an HMAC-signed, expiring permit, with a kill switch, a hash-chained receipt log and a signed forensics bundle. 27 tests.