token-gating

Zero-dependency on-chain token-gating for U.CASH: verify UCASH/ERC-20/native holdings to gate access. Python + JS.

Reusable Django authentication for Sign-In with Ethereum, including sessions, wallet linking, DRF views, and token gates.

Verifier for InsumerAPI attestations and trust profiles, for Node.js and Python. ECDSA P-256 and ML-DSA-65 signatures, condition hashes, block freshness, expiry. Same checks, same test vectors, npm and PyPI.

A FastAPI service implementing token-gated LLM execution using LangGraph. This system enforces predictable cost envelopes across planning, retrieval, generation, and quality assessment phases.