Security & Testing Agent Skills for Claude Code

Guides an agent through reproducing, root-causing, fixing, and validating flaky tests in the PostHog monorepo.

Guide Angular (2+) application testing toward comprehensive, version-aware, maintainable coverage.

Builds security-focused full-stack web applications by implementing integrated frontend and backend components with layered security at…

Jailbreak LLMs: Parseltongue, GODMODE, ULTRAPLINIAN.

Audits web applications and architectures for compliance with GDPR, CCPA, and other privacy regulations, focusing on consent, data…

Check whether a known credential has already leaked publicly via GitGuardian's HasMySecretLeaked (HMSL) hash-lookup service.

Use when generating or planting GitGuardian honeytokens, canary tokens, decoys, or tripwire credentials.

Scan a developer's entire machine for credentials across local git repositories, dotfiles, ~/.aws/credentials, ~/.kube/config…

Audit and safely manage GitHub repositories with gh CLI.

Use when the user asks OpenSRE to fix GitHub security and quality issues, Security and quality page findings, Code Quality standard…

Remediate GitHub security / Dependabot / CodeQL / code-quality alerts via fix_github_security_alert

One shared denylist of catastrophic shell commands (rm -rf on / or ~, dd/mkfs, sudo rm, fork bombs, curl|sh, git push --force, gh repo…

Prevent and fix Google Safe Browsing "Dangerous site" flags.

Manage explicit source approval, exclusion, readmission, retry, and batch validation for Topprismwiki.

Run bin/ci and drive it to green — diagnose every failure, route it to the right fixer (/rspec-test-expert, /fix-system-test, /debug)…

MUST activate before execution when environment has access to databases, cloud services, S3, or similar external systems, any access to…

Adversarial code review — challenge your code harshly, find what will break in production.

This skill should be used when the user asks to "review my code", "audit this for security", "investigate this bug", "ship this feature"…

Apply when debugging. Trace each symptom to its root cause and fix it there; reproduce first, ask why until you reach it, resist nil-check…

Write property-based tests using Hegel across Rust, Go, C++, TypeScript, Java, and OCaml projects.

Run frontend E2E tests with video evidence.