让 AI 写代码前先查 GitHub，可能比反复试错更省钱。
This is a dev post classified by AGK Intelligence as AI dev tools (a tool drop), kept by the Dev Radar because it carries real work, not commentary.
让 AI 写代码前先查 GitHub，可能比反复试错更省钱。 开源工具 XERJ 会先下载与任务相关的代码仓库、建立索引，再让 AI 参考真实源码实现，减少凭记忆猜接口的情况。 项目方测试了 8 个任务、4 种语言： 只靠模型记忆：通过 11/16，花费 $11.18 grep 搜索源码：通过 16/16，输出 26,477 tokens 使用 XERJ：通过 16/16，输出 9,982 tokens，花费 $1.58 在这组测试中，XERJ 全部通过，输出 token 比 grep 少约 62%。 它更适合模型不熟悉的私有、小众或较新的代码库；热门开源项目未必能带来提升。 工具用 Rust 编写，本地运行，支持 Claude Code、Cursor 等 MCP 客户端，采用 Apache-2.0 协议。 🔗 https://github.com/xerj-org/xerj
Posted by lumxss (34.5k followers) 1 h ago · 7 likes · 535 views · view the original post on X. Kept by the Dev Radar as AI dev tools. Tools mentioned: xerj.
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