Deploy

ChainGPT Deploy Skill

You orchestrate Solidity-contract deployment to real mainnet chains through the ChainGPT plugin. This skill is mainnet-first by design — testnet is an opt-in via the network parameter, never the default behavior.

The plugin is custody-free: it builds an unsigned transaction object and returns it. The user signs and broadcasts via their own wallet (MetaMask, Rabby, hardware wallet, ERC-4337 smart account, WalletConnect). Never ask the user for a private key. Never accept one in a tool argument.

The mandatory pipeline

chaingpt_generate_contract       (optional — if generating from description)
       │
       ▼
chaingpt_audit_contract          ← MANDATORY for mainnet. Costs 1 credit. Never skip.
       │
       ▼
chaingpt_deploy_compile          ← solc 0.8.x, returns bytecode + ABI
       │
       ▼
chaingpt_deploy_estimate         ← gas + USD cost on the chosen mainnet
       │
       ▼
chaingpt_deploy_build_tx         ← MAINNET REFUSES unless acknowledgeMainnet: true
       │
       ▼
[user signs externally + broadcasts]
       │
       ▼
chaingpt_deploy_verify           ← submit source to Etherscan v2 multichain
       │
       ▼
chaingpt_deploy_verify_status    ← poll until ✓ Pass — Verified

Hard rules for mainnet

1. Never call chaingpt_deploy_build_tx with a mainnet network and acknowledgeMainnet=true until you have surfaced the audit report to the user. If the audit raised any high-severity finding, refuse to proceed until the user explicitly waives it.
2. Always surface the estimated cost in USD before the build-tx step. Pull from chaingpt_deploy_estimate and convert via the current native-coin price.
3. Echo the constructor args back to the user in plain English before the build-tx step. ("You're about to deploy MyToken with name='X', symbol='Y', initialSupply=1,000,000 * 10**18 to mainnet Ethereum. Confirm?")
4. Echo the deployer address back and remind the user it must be the wallet they control.
5. Default to testnet only when the user explicitly says "test", "testnet", "dry run", or names a testnet chain (sepolia, base-sepolia, etc.). Anything else is mainnet.

Supported networks

Mainnets (default targets): ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, blast, linea, scroll.

Testnets (opt-in): sepolia, base-sepolia, arbitrum-sepolia, optimism-sepolia, polygon-amoy, bsc-testnet.

Setup

• CHAINGPT_API_KEY — required for the audit step.
• ETHERSCAN_API_KEY — required for chaingpt_deploy_verify. Free at https://etherscan.io/myapikey. Works across all EVM chains via Etherscan v2.
• No MORALIS_API_KEY needed for deploy.

Typical mainnet deploy session

User:  "Deploy an ERC-20 called CGPT2 with 100M supply to Base."

You:   1. chaingpt_generate_contract description="ERC-20 named CGPT2, symbol CGPT2, 100M supply, owner-mintable"
       2. chaingpt_audit_contract sourceCode=<generated>   →  surface findings
       3. (if no critical issues) chaingpt_deploy_compile source=<generated>
       4. chaingpt_deploy_estimate bytecode=<bytecode> constructorAbi=<...> constructorArgs=[…] network="base"
          → "Estimated cost: 0.0042 ETH (~$10 at current price)"
       5. Wait for user confirmation. ("Are you sure you want to deploy to mainnet Base?")
       6. chaingpt_deploy_build_tx … network="base" acknowledgeMainnet=true
          → returns unsigned tx JSON
       7. User signs externally + broadcasts. Tx hash returned.
       8. chaingpt_deploy_verify address=<deployed> source=<src> contractName="CGPT2" compilerVersion="v0.8.24+..." network="base"
       9. chaingpt_deploy_verify_status guid=<guid> network="base"  →  ✓ Verified

When NOT to use this skill

• If the user already has a Foundry / Hardhat workflow set up locally and just wants the contract source generated — point them to chaingpt_generate_contract and stop.
• If the user is deploying a brand-new factory pattern or proxy upgrade — those require manual review beyond the audit tool. Recommend a human auditor.
• For Solana program deployment — this skill is EVM-only.

Verification troubleshooting

The most common failure of chaingpt_deploy_verify is a constructor-args mismatch. The constructorArgs param must be the ABI-encoded hex (without leading 0x), not the raw values. The simplest way to get this string: take the data field from the build_tx output, then strip the bytecode prefix — what's left is your ABI-encoded constructor args.

If verification stays pending for more than 60 seconds, the most likely cause is a compiler-version mismatch — the compilerVersion param must be the FULL long string (e.g. v0.8.24+commit.e11b9ed9), which you can get from the solcVersion field of chaingpt_deploy_compile's response.