cooleryu Field Noteshttps://cooleryu.github.io/ContextAdapt/Research notes on AI agent reliability and ContextAdapt.enHow Much Code Context Does an AI Agent Need?https://cooleryu.github.io/ContextAdapt/articles/how-much-code-context-does-an-ai-agent-need/https://cooleryu.github.io/ContextAdapt/articles/how-much-code-context-does-an-ai-agent-need/Wed, 02 Sep 2026 00:00:00 GMTA controlled study of whether smaller, structured code contexts retain action-critical evidence better than naive truncation—and what that still does not prove.Codex at 500K: more room, but check the state before writinghttps://cooleryu.github.io/ContextAdapt/articles/codex-500k-context/https://cooleryu.github.io/ContextAdapt/articles/codex-500k-context/Tue, 13 Oct 2026 16:00:00 GMTStart with the default, restore missing evidence, and check the current target, file state, and permission before writing.Codex 默认 500K 之后：少压缩，不等于少犯错https://cooleryu.github.io/ContextAdapt/articles/codex-500k-context/zh-CN/https://cooleryu.github.io/ContextAdapt/articles/codex-500k-context/zh-CN/Tue, 13 Oct 2026 16:00:00 GMT先用默认窗口，找准缺失的材料，并在写入前确认目标、文件状态和权限是否仍然有效。计划没有错，世界已经变了：为什么长时程 Agent 的上下文问题最终会变成执行问题https://cooleryu.github.io/ContextAdapt/articles/the-plan-was-valid/https://cooleryu.github.io/ContextAdapt/articles/the-plan-was-valid/Tue, 13 Oct 2026 16:00:00 GMT一篇基于近期研究、受控实验与真实执行器集成的迷你综述：长上下文失败不只是遗忘，更可能是 Agent 在执行时仍依赖已经过期的事实与权限。The Plan Was Valid. The World Had Changed: Why Context Problems in Long-Horizon Agents Become Execution Problemshttps://cooleryu.github.io/ContextAdapt/articles/the-plan-was-valid/en/https://cooleryu.github.io/ContextAdapt/articles/the-plan-was-valid/en/Tue, 13 Oct 2026 16:00:00 GMTA short review of recent research, controlled experiments, and executor integration: long-context failures are not only about forgetting. Agents may act on facts and permissions that have already expired.Why does Codex show 258K? Getting the 500K default to take effecthttps://cooleryu.github.io/ContextAdapt/articles/codex-258k-context/https://cooleryu.github.io/ContextAdapt/articles/codex-258k-context/Wed, 14 Oct 2026 16:00:00 GMTSeparate the 258K display, the 500K default and the compaction threshold; check overrides and configure the window with documented settings.Codex 为什么显示 258K？默认 500K 怎么生效https://cooleryu.github.io/ContextAdapt/articles/codex-258k-context/zh-CN/https://cooleryu.github.io/ContextAdapt/articles/codex-258k-context/zh-CN/Wed, 14 Oct 2026 16:00:00 GMT分清 258K 显示值、500K 默认窗口和自动压缩阈值，检查模型与配置覆盖，并用官方配置项手动设置。