Boris Cherny 用 Opus 5.5 配合 Lean 对 Claude Agent SDK 做形式化验证，几个简短提示词就产出 16 个 PR，修复了多个 bug 和竞态条件。他还提到 TLA+ 同样适用，有时会结合 Lean 与 TLA+ 排查数据流、并发和状态管理问题。他表示自己并不精通这两门语言，但 Claude 都很擅长，这种方法能发现人类难以察觉的 bug。
I used Opus 5.5 to formally verify the Claude Agent SDK using Lean. A couple short prompts = 16 PRs fixing various bugs and race conditions. Video attached.
TLA+ also works well. I sometimes combine Lean and TLA+ to look for issues around data flow, concurrency, and state mgmt.
I don't know either language well, but Claude is excellent at both. This approach is super useful for formally modeling your code and finding bugs that a human probably wouldn't have spotted.
Is formal verification the future of coding (or at least, bug finding)?
来源：Boris Cherny · x.com