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Gungnir

Agent skill
1 skill

Attack your own system — under explicit authorization — to prove its defenses hold, before launch and continuously after: scope and authorize, recon, scan and enumerate, exploit and confirm real vulnerabilities (not scanner false positives), chain them into real impact, then report and re-test. The offensive half of the security pair (the spear) that proves what the aegis skill builds (the shield). Authorized, defensive penetration testing of systems you own or have written permission to test — never anything else. Use when the user wants to penetration-test their own application before launch, validate a fix actually closed a hole, stand up adversarial validation in CI or on a cadence, or learn to test for OWASP-class vulnerabilities on their own staging. Triggers on "pentest my app", "attack my own system", "is this actually exploitable", "pre-launch security test", "red-team my staging", "test for SQL injection / XSS / IDOR", "set up continuous security validation", "OWASP testing".

Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI

Supported by the Atlas install prompt. Skill-specific requirements vary.

Skill stats

Skills1CategorySecurityStars0

About this skill

Attack your own system — under explicit authorization — to prove its defenses hold, before launch and continuously after: scope and authorize, recon, scan and enumerate, exploit and confirm real vulnerabilities (not scanner false positives), chain them into real impact, then report and re-test. The offensive half of the security pair (the spear) that proves what the aegis skill builds (the shield). Authorized, defensive penetration testing of systems you own or have written permission to test — never anything else. Use when the user wants to penetration-test their own application before launch, validate a fix actually closed a hole, stand up adversarial validation in CI or on a cadence, or learn to test for OWASP-class vulnerabilities on their own staging. Triggers on "pentest my app", "attack my own system", "is this actually exploitable", "pre-launch security test", "red-team my staging", "test for SQL injection / XSS / IDOR", "set up continuous security validation", "OWASP testing".

Quick start

  1. Copy the install prompt. Use the green button above this README.
  2. Send it to your agent. Paste it into your coding agent’s chat and send.
  3. Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
Review the source before using this skill

This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.

Automated security scan: Partial

Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.

0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1

Content SHA-256: 495f99344c9eaf637d50091fb2a83dd9cd493fe57bd4a0587fafd044685ba360

About scan coverage and limitations

About this listing

Category
Security
Reported license
Apache-2.0
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Gungnir | Agent Skills Atlas