Ethereum and DeFi tooling in Python, Go, TypeScript, Solidity and Rust. Most of it reads data from the chain over JSON-RPC: AMM and gas math, contract state, EVM internals.
- univ3-tick-math: Uniswap v3 tick, price and sqrtPriceX96 conversions
- matching-engine-go: limit order book with price-time priority
- eth-checksum-address: EIP-55 checksums with a pure-Python Keccak-256
| Project | Language | Description |
|---|---|---|
| erc20-allowance-checker | Python | Check an address's ERC-20 and Permit2 allowances against common DeFi spenders with eth_call |
| stale-pyc | Python | Find .pyc files Python would still load after the source changed: same-size edits within the same second, mtime-preserving copies, unchecked-hash caches |
| node-disk-alert | Shell | Disk usage and growth-rate alerts for blockchain nodes, predicting days until full and notifying via Telegram |
| univ3-position-reader | Python | Read a Uniswap v3 LP position NFT on-chain: pool, range, in-range status, current token amounts and uncollected owed tokens |
| amm-lp-simulator | Rust | Monte Carlo simulator of a constant-product AMM LP position vs holding, with arbitrageurs, fees and GBM price paths |
| mutant-check | Python | Check that a test really covers a guard: replace one spot in the code, rerun the tests, restore the file, and report killed or survived |
| nonce-gap-checker | TypeScript | Detect stuck transactions by comparing an address's latest and pending nonce on several EVM chains |
| keystore-backup | Shell | Encrypted, rotated backups of wallet keystores or validator keys with gpg AES-256, checksums and restore verification |
| keystore-inspector | Go | Inspect Ethereum keystore V3 JSON files without the password: KDF strength, cipher, MAC and address, with weak-parameter warnings |
| solana-token-holders | Python | Show supply and the largest holders of any Solana SPL token from RPC alone, resolving token accounts to their owner wallets |
| blob-basefee-rs | Rust | EIP-4844 blob base fee calculator in Rust using the spec's fake_exponential, with Cancun and Prague update fractions |
| univ3-twap-oracle | Python | Compute a manipulation-resistant TWAP from any Uniswap v3 pool's built-in oracle via observe(), and compare it with the spot price |
| eip1559-sim-rs | Rust | Simulate EIP-1559 base fee dynamics in Rust under demand shocks and see how quickly the fee converges back to the target |
| block-at-timestamp | TypeScript | Find the Ethereum block for any date with an interpolation-guided binary search over JSON-RPC, counting every RPC call |
| erc4337-userop-stats | Python | Account abstraction activity from EntryPoint logs: UserOperation counts, success rate, paymaster share and gas costs over recent blocks |
...and 39 more in the repositories tab.