Agentic Gatekeeper
Hey HN, I built Agentic Gatekeeper, a headless pre-commit hook baked into the VS Code Source Control panel that autonomously patches code before you commit it. The Problem: Whether I'm writing code manually or letting LLMs (Cursor/Copilot) generate it, keeping logic strictly in pace with local project rules (like CONTRIBUTING.md or custom architecture guidelines) is tedious. Standard linters catch syntax, but they don't catch business logic or state "You must use the Fetch wrapper for API calls in this folder". How it works: When you stage files and trigger the hook, the extension spins…
Agentic Gatekeeper launched on February 24, 2026 with 3 votes, #3,487 of 16,628 launches that month and more than 50% of that year's launches.
What it does
Stop breaking the build. Agentic Gatekeeper is an AI pre-commit hook that autonomously applies your project's rules before you commit. It evaluates staged files and auto-patches them to enforce 100% logic, style, and architecture compliance.
Extension for Visual Studio Code - The industry's first Agentic Rule Enforcer. Automatically compare your Project Ruleset against staged changes and apply full-file patches using Claude, GPT, Qwen, and DeepSeek. Stop technical debt before it hits your 
Write rules in plain English → Stage your code → The Gatekeeper auto-patches violations before you push. Teams invest heavily in documenting their engineering standards — architecture decisions, security guardrails, coding conventions — in files like CONTRIBUTING.md , ARCHITECTURE.md , or AGENTS.md . But nobody enforces them . Whether code is written by a human or generated by an AI assistant like Copilot, rules silently drift, technical debt compounds, and PR reviews turn into a battlefield of repeated feedback. Agentic Gatekeeper fixes this. It reads your Markdown rules, cross-references them against your staged code, and auto-patches violations before you commit — turning your docs from…from marketplace.visualstudio.com
In the maker’s words, at launch
TLDR: Documentation like READMEs and ARCHITECTURE.md files are passive and easily ignored, leading to repetitive PR reviews and technical debt. I built Agentic Gatekeeper to turn these Markdown docs into active, auto-patching git-hooks. The extension audits your staged code against your project's rules and uses AI to…
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