zama-fhevm-builder

AI coding agents are how developers write Solidity now. But they have no built-in knowledge of FHE. Ask Claude to write a confidential auction and you get hallucinated TFHE.add calls, missing FHE.allowThis on storage writes, and decrypt-then-branch patterns that defeat the privacy model. zama-fhevm-builder is a production-ready Claude Code skill that fixes that. 19 files, 2,995 lines: a SKILL.md workflow, 10 reference docs (encrypted types, FHE operations, ACL semantics, input proofs, decryption patterns, frontend integration, testing, anti-patterns, FHEVM architecture, Hardhat setup), 3 canonical templates (contract / Hardhat test / frontend hook), and 3 worked examples (confidential counter, sealed-bid auction grounded in VeilBid, ERC-7984 token). Grounded in real production code. Drop it in ~/.claude/skills/, prompt naturally, get working FHEVM code.