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     Source: https://docs.0gkit.com/errors/CONTRACTS_CODEGEN_FAILED
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# CONTRACTS_CODEGEN_FAILED

**0g contracts generate failed**

## What happened

The codegen step couldn't read the Foundry artifact JSON — either the file path is wrong, the JSON is malformed, or it's a Hardhat artifact (not currently supported).

## How to fix

Confirm the path points to a Foundry artifact: it should have top-level `abi` and `contractName` fields. For Hardhat artifacts, extract the ABI with `jq '.abi'` and wrap it manually until plugin support lands.

## Example

```ts
# Foundry — supported
forge build
0g contracts generate --abi ./out/MyContract.sol/MyContract.json --out ./src/typed
```

## Reference

- Namespace: `CONTRACTS`
- Help URL: `https://0gkit.com/errors/CONTRACTS_CODEGEN_FAILED`
- See also: [all error codes](/errors)