Ethereum protocol engineering squad for AI coding assistants
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Skill Claude CodeCodex
Front-running and MEV protection patterns for Solidity protocols. Use when designing swaps, auctions, NFT mints, or any transaction-ordering-dependent logic. Covers sandwich attacks, commit-reveal, Flashbots, slippage protection, and deadline parameters.
Skill Claude CodeCodex needs its repo
Use when writing fuzz tests for Solidity contracts. Covers property-based testing, input constraining with vm.assume/vm.bound, stateful vs stateless fuzzing, configuring runs, seed corpus, and interpreting counterexamples.
Skill Claude CodeCodex
Gas optimization patterns for Solidity smart contracts. Use when optimizing contract deployment cost, runtime gas usage, or reviewing gas-critical paths. Covers calldata vs memory, immutable/constant, unchecked blocks, storage packing, batch operations, and custom errors.
Skill Claude CodeCodex
Use when tracking gas costs, detecting regressions in CI, or optimizing Solidity contracts. Covers forge snapshot, gas reports, CI integration, and optimization techniques.
Skill Claude CodeCodex
Governance vulnerabilities and safe design patterns for onchain DAOs. Use when designing or auditing governance systems, voting mechanisms, proposal workflows, or treasury management. Covers flash loan voting, vote buying, proposal griefing, timelock bypass, and quorum manipulation.
Skill Claude CodeCodex
Use when implementing onchain governance, DAO voting systems, or timelock-controlled execution. Covers OpenZeppelin Governor, TimelockController, voting strategies, quorum calculations, and proposal lifecycle.
Skill Claude CodeCodex
Proper use of immutable and constant variables for gas savings and correctness. Use when deploying contracts with fixed configuration, optimizing gas, or deciding between constant, immutable, and storage variables.
Skill Claude CodeCodex
Integer safety patterns for Solidity 0.8+. Use when working with unchecked blocks, safe casting, or intermediate calculation overflow risks. Covers automatic checks, intentional overflow, phantom overflow, and safe math patterns.
Skill Claude CodeCodex
Interface and abstract contract design patterns for Solidity protocols. Use when designing modular contract systems, defining protocol standards, implementing EIP-165, or structuring inheritance hierarchies.
Skill Claude CodeCodex needs its repo
Use when writing Foundry invariant (stateful fuzz) tests. Covers handler contracts, ghost variables, target configuration, common invariant patterns, and handler design for DeFi protocols.
Skill Claude CodeCodex needs its repo
Use when deploying dApp frontends to IPFS or decentralized hosting. Covers static builds, IPFS pinning (Pinata, Fleek), ENS content hash, trailingSlash configuration, and gateway setup.
Skill Claude CodeCodex needs its repo
Use when deploying contracts to L2 networks (Base, Optimism, Arbitrum). Covers L2-specific considerations, PUSH0 compatibility, gas estimation, L1 data costs, bridge integration, and deployment scripts.
Skill Claude CodeCodex
Library design patterns for reusable Solidity code. Use when creating shared utilities, math libraries, or type-safe operations. Covers internal vs external libraries, using-for, deployment patterns, and common math libraries.
Skill Claude CodeCodex
Use when implementing liquidity mining programs, LP incentive systems, or MasterChef-style reward distribution. Covers emission schedules, gauge systems, boost mechanics, and reward claiming.
Skill Claude CodeCodex
Use when analyzing LP positions, calculating impermanent loss, optimizing position ranges, estimating fee revenue, rebalancing strategies, or building automated liquidity management. Covers both Uniswap V3 NonfungiblePositionManager and V4 PositionManager positions.
Skill Claude CodeCodex
Use when deploying many identical contracts cheaply with EIP-1167 minimal proxy (clones). Covers Clones library, initialization patterns, gas efficiency, factory patterns, and limitations.
Skill Claude CodeCodex needs its repo
Use when deploying the same protocol to multiple chains at the same address. Covers CREATE2 for deterministic addresses, deployment registries, chain-specific configuration, multi-chain testing, and canonical deployment patterns.
Skill Claude CodeCodex
NatSpec documentation standards for Solidity contracts. Use when writing or reviewing contract documentation. Every public and external function must have NatSpec. Covers all tags, formatting conventions, and complete examples.
Skill Claude CodeCodex
Oracle attack vectors and safe integration patterns for DeFi protocols. Use when integrating Chainlink, Uniswap TWAP, or any price oracle. Covers staleness checks, L2 sequencer downtime, sandwich oracle updates, and fallback strategies.
Skill Claude CodeCodex
Use when performing a comprehensive smart contract security audit. Implements the Pashov Audit Group's parallelized 12-agent attacker-framing methodology (solidity-auditor v4) — nine single-specialty lenses (math precision, access control, economic security, execution trace, invariant, periphery, first principles…
Skill Claude CodeCodex
Use when discovering Uniswap pools, querying pool state, analyzing TVL/volume, finding optimal swap routes, or inspecting pool parameters. Covers V3 Factory queries, V4 PoolManager state, subgraph queries, and cast/forge inspection commands.
Skill Claude CodeCodex
Use when choosing or implementing proxy/upgrade patterns. Compares UUPS (EIP-1822), TransparentUpgradeableProxy, Beacon proxy, minimal proxy (EIP-1167), and Diamond (EIP-2535) with gas costs, flexibility, and security tradeoffs.
Skill Claude CodeCodex
Comprehensive reentrancy attack patterns and defenses for Solidity. Use when writing contracts with external calls, integrating tokens with callbacks (ERC-777, ERC-1363), or auditing for reentrancy vulnerabilities. Covers all variants including read-only reentrancy.
Skill Claude CodeCodex needs its repo
Use when building with Scaffold-ETH 2. Covers project structure, custom hooks (useScaffoldReadContract, useScaffoldWriteContract), debug page, deploying contracts, hot reload, and wagmi integration.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: