Agent skill

Supercov Security

by supercorp-ai in supercorp-ai/supercov

Scans a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each finding and mapping it to CWE classes.

MITAuto-check passedTesting & QA

Install Supercov Security

skills CLI
$ npx skills add supercorp-ai/supercov --skill supercov-security -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install supercorp-ai/supercov supercov-security --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/supercorp-ai/supercov.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/supercov/skills/supercov-security .claude/skills/supercov-security && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
supercov-security
GitHub stars
151
Used in
1 other repo
Token cost
~236 tokens
SKILL.md length
100 words
Files
1
Skills in repo
2
Repo updated
First seen
Licence
MIT

At a glance

Scans a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each finding and mapping it to CWE classes.

  • The user asks for a security scan
  • Calls npx; needs TYPESAFE_API_KEY
  • Whether code is secure
  • Find vulnerabilities

What it does

Supercov Security is an agent skill from supercorp-ai/supercov. Scans a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each finding and mapping it to CWE classes. Use when the user asks for a security scan or audit, whether code is secure, or to find vulnerabilities, injection, hardcoded secrets or other insecure code.

Its SKILL.md is about 240 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Secrets management, Security review and Test coverage. It works with JavaScript, Python, Ruby and Rust. The repository describes itself as: Coverage, security and code quality for coding agents. The licence is MIT.

When your agent uses it

  • The user asks for a security scan
  • Whether code is secure
  • Find vulnerabilities
  • Hardcoded secrets

Example prompts

  • “Use the supercov-security skill to scan a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each…”
  • “/supercov-security”

Requirements

  • Node.js
  • A credential in TYPESAFE_API_KEY

What it can do on your machine

Read from SKILL.md and the folder at commit b346ffd. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • npx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • TYPESAFE_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Supercov Security loads about 236 tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 100 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~81
When it runs · the whole SKILL.md, loaded when a task matches
~236

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from supercorp-ai/supercov at commit b346ffd, republished under its MIT licence (© supercorp-ai). 100 words, ~236 tokens.

Download SKILL.mdSave it as .claude/skills/supercov-security/SKILL.md (or your agent's skills folder).
name
supercov-security
description
Scans a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each finding and mapping it to CWE classes. Use when the user asks for a security scan or audit, whether code is secure, or to find vulnerabilities, injection, hardcoded secrets or other insecure code.
license
MIT

Supercov security

Run npx supercov security for the whole repository, or npx supercov security patch for what a change introduced. It checks every source file for twelve named risks and points to the line. npx supercov docs security prints the guide for the installed version.

It sends source files to TypeSafe using the TYPESAFE_API_KEY environment variable. A user who set the key has opted in, so run it without asking again. If the key is missing the command says so: tell the user how to set it, then review the code by hand and say Supercov did not check it.

© supercorp-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/supercov/skills/supercov-security of supercorp-ai/supercov.

Open the folder on GitHubat commit b346ffd

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in supercorp-ai/supercov, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Supercov Security next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Supercov Security compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Supercov Security this skillsupercorp-ai/supercov1511 repos~236Automated safety check: PassMIT
Security Reviewgithub/awesome-copilot40k1 repos~2.3kAutomated safety check: NotesMIT
Polyglot Test Agentboshi-xixixi/TraeSkill275—~1.7kAutomated safety check: PassMIT
Git HooksProrise-cool/Claude-Code-Multi-Agent305—~3.6kAutomated safety check: NotesNone
Asw Programmingwjgoarxiv/antigravity-swarm166—~3kAutomated safety check: PassMIT
Mutation Testingsecondsky/claude-skills227—~1.4kAutomated safety check: NotesMIT

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More from supercorp-ai/supercov

  • Supercov

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Questions about Supercov Security

What does Supercov Security do?

Scans a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each finding and mapping it to CWE classes. Supercov Security is an agent skill from supercorp-ai/supercov. Scans a repository's source for security vulnerabilities with the supercov CLI, pointing to the line of each finding and mapping it to CWE classes.

When should I use Supercov Security?

Supercov Security fits situations like: the user asks for a security scan; whether code is secure; find vulnerabilities; hardcoded secrets.

How do I install Supercov Security in Claude Code?

Run `npx skills add supercorp-ai/supercov --skill supercov-security -a claude-code`. Or copy the skill folder (plugins/supercov/skills/supercov-security in supercorp-ai/supercov) into .claude/skills/supercov-security in your project. Claude Code loads it when a task matches its description.

How do I install Supercov Security in Codex?

Run `npx skills add supercorp-ai/supercov --skill supercov-security -a codex`. Or copy the skill folder (plugins/supercov/skills/supercov-security in supercorp-ai/supercov) into .agents/skills/supercov-security in your project. Codex loads it when a task matches its description.

Can I use Supercov Security in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add supercorp-ai/supercov --skill supercov-security -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/supercov-security, .gemini/skills/supercov-security, .github/skills/supercov-security and .opencode/skills/supercov-security in your project.

What does Supercov Security need to run?

Going by SKILL.md and its folder, Supercov Security needs the command-line tools its instructions call (npx) and credentials named TYPESAFE_API_KEY. Our summary lists: Node.js; A credential in TYPESAFE_API_KEY.

Does Supercov Security access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Supercov Security safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Supercov Security use?

Supercov Security is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Supercov Security use?

About 236 tokens (SKILL.md is roughly 944 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Supercov Security?

Skills that share tags, products or a category with Supercov Security: Security Review (github/awesome-copilot, 40k stars), Polyglot Test Agent (boshi-xixixi/TraeSkill, 275 stars), Git Hooks (Prorise-cool/Claude-Code-Multi-Agent, 305 stars) and Asw Programming (wjgoarxiv/antigravity-swarm, 166 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Supercov Security?

supercorp-ai (a GitHub organization) maintains it in supercorp-ai/supercov, which has 151 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 8, 2026.

Source: supercorp-ai/supercov on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.