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A modern CLI based Solidity transaction debugger and tracer

by SB Crypto Guru News
April 5, 2026
in Ethereum
Reading Time: 2 mins read
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A modern CLI based Solidity transaction debugger and tracer

Hi all,

I build a new kind of cli based solidity debugger you might find useful.

During the few days easter break I finally could finish a long standing project I had in mind: a cli based solidity debugger and tracer.

I used to use truffle-debug a lot, but the whole project got sunset (and was painfully slow anyways, but thats a different story). Foundry as a successor always made sense to me. Its fast, its git based, its a workhorse, never let me down so far.

But I always missed a properly formatted easy to use tracer and debugger like we know it from tenderly, but cli based, with local, text based outputs. I wanted something a human and an LLM can use.

So I built soldebug. You give it a transaction hash and it gives you a decoded stack trace:

$ soldebug 0xe1c962... --rpc-url https://sepolia.infura.io/v3/... --project-dir ./myproject Transaction 0xe1c962...b53fb6 REVERTED (gas: 29.8K) Call Stack: TestToken.mint(arg0=0xdEadDEAD..., arg1=9e23) <- REVERT REVERT: MaxSupplyExceeded(9e23, 5e23) 

It replays the transaction locally using revm (same as Foundry), matches contracts from your local Foundry project, resolves proxy implementations (UUPS, transparent proxies), and can fetch external contract ABIs from Etherscan/Sourcify. All in Rust, same style as Foundry itself.

It's a first version, really early, but maybe useful for other Ethereum devs.

If you find it useful (or not), let me know, or generally, any feedback very welcome.

submitted by /u/tomtom1808
[comments]



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Tags: basedBitcoin NewsCLICrypto NewsCrypto UpdatesdebuggerLatest News on CryptoModernSB Crypto Guru NewsSoliditytracertransaction
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