Fhenix FHE Skill

AI agent skill that gives expert knowledge of Fully Homomorphic Encryption (FHE) smart contract development on the Fhenix protocol.

What It Does

When installed, AI agent automatically activates this skill when you mention FHE, Fhenix, encrypted contracts, private on-chain computation, or related topics. It provides:

• Complete FHE type system and operation reference
• Access control patterns (FHE.allow*) that are critical for correctness
• Encrypted conditional logic with FHE.select
• Multi-transaction decryption workflows
• Common mistakes and debugging guidance
• Working contract, test, and deployment templates

Installation

The Open Agent Skills Ecosystem

npx -y skills add majus/fhenix-skill

Other AI Platforms

Load SKILL.md directly into the conversation for a comprehensive FHE reference.

Usage

Just ask naturally -- the skill triggers automatically:

• "Build me an encrypted voting contract using Fhenix"
• "Create a private ERC20 token with encrypted balances"
• "Review this FHE contract for access control issues"
• "Why am I getting access denied errors on my encrypted values?"
• "Help me write Foundry tests for my FHE contract"

Structure

SKILL.md              -- Skill definition (loaded when triggered)
references/
  core.md             -- Complete FHE API reference (loaded on demand)
  examples/
    EncryptedStorage.sol    -- Example contract
    EncryptedStorage.t.sol  -- Example Foundry tests
    EncryptedStorage.s.sol  -- Example deployment script

Key Concept

Without FHE.allow() = passing a locked box without the key!

Every encrypted value needs explicit access grants. This is the #1 source of bugs in FHE contracts.

Resources

• Fhenix Documentation
• cofhe-contracts