Ali Ömer Keserhttps://keser.ai/2026-09-25T00:00:00ZAli Ömer Keserhttps://keser.ai/I cut a Claude Code session's cost by 34% with a symbol graphhttps://keser.ai/blog/keeba-claude-code-cost/2026-09-25T00:00:00Z2026-09-25T00:00:00ZHow keeba gives AI coding agents a symbol graph of your codebase instead of whole files, and what a real A/B run in Claude Code showed: $1.45 against $2.19, same two bugs found.My gas-optimized ERC721 had an auth bypass. The fixed one still beats solmate.https://keser.ai/blog/erc721-auth-bypass-then-beat-solmate/2026-09-25T00:00:00Z2026-09-25T00:00:00ZIn 2022 I claimed my ERC721 was 61% cheaper than solmate. Re-reading it, the savings came from missing security checks. Here's the fix, and the approval-epoch trick that makes the safe version cheaper than solmate and OpenZeppelin on every operation.