Supercov plugin
Coverage, security and code quality for coding agents. The plugin gives your agent two skills: one measures coverage and code quality and turns the gaps into focused tests or fixes, the other scans for security vulnerabilities. It runs npx supercov, so it needs Node.js 22 or newer.
Coverage runs locally. Security and quality send source files to TypeSafe using the TYPESAFE_API_KEY environment variable.
Install
Claude Code:
/plugin marketplace add supercorp-ai/supercov
/plugin install supercov@supercov
Codex:
codex plugin marketplace add supercorp-ai/supercov
codex plugin add supercov@supercov
Gemini CLI:
gemini extensions install https://github.com/supercorp-ai/supercov
Other agents that read skills: npx skills add supercorp-ai/supercov.
Commands
Claude Code and Gemini CLI also get four commands:
| Command | What it does |
|---|---|
/supercov:coverage [test command] | Writes one test for code no test reaches, and reports coverage before and after |
/supercov:security [patch] | Scans the repository, or a change, for security vulnerabilities |
/supercov:quality [patch] | Ranks files by code smells, or checks what a change introduced |
/supercov:review [--base ref] | Checks a branch or uncommitted change for security and quality problems |
See the Supercov README and supercov.com/docs for everything else.