The problem Every time you open ChatGPT or Claude, it has zero memory of your project. You spend the first 10 minutes of every session re-explaining your stack, your folder structure, your naming conventions, your architecture decisions, before you can ask the actual question you came to ask. 63% of developers in the Stack Overflow 2025 survey (49,000 respondents) said AI tools lack crucial context about their codebase. This isn't a skill issue. It's a tooling gap. What I built DeepCtx - a free VS Code extension that auto-builds codebase context and injects it into any AI tool. Here's how it works: Install the extension — no account, no API key, nothing to set up Open any project → pick your context slice. Hit Scan & Build Context Copy the generated .deepctx.md → paste into ChatGPT, Claude, or Cursor Ask your question — the AI already knows your stack, your patterns, your file structure. Changed-files mode — only rescans files modified since your last git commit. much faster for incremental updates.…