AI Coding Assistants · Germany
AI skill package for code quality, security and architecture checks integrated into Claude Code and OpenAI Codex
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Code Guardian integrates into Claude Code or OpenAI Codex to check code quality, security and architecture in real time through static analysis and
Code Guardian is a skill package that runs inside Claude Code or OpenAI Codex to check code quality, security and architecture before changes are deployed. It includes five modes, seven gates, 15 hooks and 22 detectors built from over 120 real software projects. The tool enforces deterministic safety checks that block destructive commands, require approvals before deploys, verify migrations, and validate dependencies. It comes with 27 skills and 14 review agents that examine code changes from multiple angles, including root-cause analysis and retrospectives. Code Guardian can run on macOS, Linux and Windows with Python 3.9 or newer, requires no network connection for core functionality, and provides both Claude Code and OpenAI Codex editions.
Benchmarks show an average improvement of 5.7 points compared to 5.0 without Code Guardian across valid comparisons. The tool is designed for developers and teams who need quality assurance integrated into their AI coding workflow without adding manual review overhead.
Pricing model: Paid
Company licence 142.80 € one-off (incl. 19% VAT, equals 120.00 € net), first 30 days of updates included. Optional subscription: 29.75 € per month incl. VAT (25.00 € net), cancellable monthly. With purchase: 22.31 € per month incl. VAT for 6 months (−25%), then 29.75 € per month.
A quality gate is a check that comes before an operation instead of objecting to it afterwards. Code Guardian includes seven gates: before every deploy, migration, new dependency, data verdict, defect claim, option question and legal text. Deploy and migration gates stop operations outright; the option question only stops in autopilot mode; legal text and data gates only activate when switched on.
Yes, Code Guardian has two separate editions: one for Claude Code and one for OpenAI Codex CLI. The company licence covers both editions, and customers choose which one to download from the customer portal.
Code Guardian runs on macOS, Linux and Windows. On Windows it runs natively via Git for Windows (Git Bash) without requiring WSL. If you work entirely inside WSL 2 with both Claude Code and Code Guardian in Ubuntu, it works as on Linux. The mixed setup of Claude Code on Windows with checks running through WSL is not supported. Python 3.9 or newer is required on all systems.
A linter checks source code against rules. Code Guardian checks the workflow: whether a plan was approved before the change, whether a claim is backed by command output, and whether a deploy or migration may start at all. The two tools do not exclude each other and can be used together.
macOS, Linux and Windows. On Windows natively via Git for Windows (Git Bash); WSL is not required. If you work entirely inside WSL 2, with Claude Code and Code Guardian both in Ubuntu, it works as on Linux. Claude Code on Windows with checks running through WSL is not supported. The gates themselves are language-independent. Python 3.9 or newer is required on every system, because the four command latches reach their verdict in it; individual tool layers additionally require PHP.
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Code Guardian has a free listing. The owner can unlock the full profile with a paid launch for $5:
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