Web3 & Smart Contracts skills for Codex
Skills for smart contract development with security first: Solidity patterns, Foundry tests with fuzzing and invariants, Hardhat projects, audit checklists, gas optimization, upgradeable proxies, token standards, viem and wagmi frontends, Solana Anchor programs and Move.
curl -fsSL codexskills.dev/install.sh | sh -s -- --category web3 Installs all 14 into ~/.agents/skills/. Or download the zip.
All 14 Web3 & Smart Contracts skills
Each opens the full SKILL.md, example prompts and every way to install it.
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Account Abstraction
Gasless, batched transactions that bundlers accept -
Chainlink Oracles
Treat every oracle answer as untrusted input -
ERC Token Standards
ERC-20, 721 and 1155 composed from audited parts -
Foundry Testing
Fuzz the math, run the invariants, pin the fork -
Gas Optimization
Cut storage costs first, prove every saving -
Hardhat Projects
Config, deploy and verify without leaking a key -
Move on Sui and Aptos
Minimal abilities, explicit capabilities, tested aborts -
Smart Contract Audit
Every finding comes with a failing test -
Solana Anchor
Validate every account the attacker hands you -
Solidity Contracts
Write contracts as if there is no second release -
The Graph Subgraphs
Index contract events into queries that stay fast -
Upgradeable Contracts
Upgrade proxies without corrupting storage -
viem and wagmi
Typed contract calls that simulate before they sign -
Wallet Integration
Connect, switch and sign without confusing users
No Web3 & Smart Contracts skill matches that.
Where to start
Install the ones that match requests you make every week. Name one with $smart-contract-audit when you want it for sure; otherwise Codex picks by description.
Start with
- Smart Contract AuditEvery finding comes with a failing test
- Account AbstractionGasless, batched transactions that bundlers accept
- Chainlink OraclesTreat every oracle answer as untrusted input
Install a few by name
curl -fsSL codexskills.dev/install.sh | sh -s -- account-abstraction chainlink-oracles 104-line POSIX script. No sudo, no telemetry. Read install.sh
By stack
Web3 & Smart Contracts FAQ
How do I install every Web3 & Smart Contracts skill at once?
Run curl -fsSL https://codexskills.dev/install.sh | sh -s -- --category web3 to put all 14 in ~/.agents/skills/, or add --project to install them into the current repository's .agents/skills/. You can also download the category zip and unpack it yourself.
Does installing 14 skills slow Codex down?
Hardly. At startup Codex sees only each skill's name and description, a few dozen words apiece, and reads a full SKILL.md only when a task needs it. Install the whole category if the work fits; unused skills cost almost nothing.
Which Web3 & Smart Contracts skill should I start with?
Start with Smart Contract Audit, Account Abstraction, Chainlink Oracles. They cover the requests that come up most in this category. Mention one with $smart-contract-audit to try it.