Security & Testing Agent Skills for Codex CLI

Activation requires either supplied .NET coverage reports/percentages/line, branch, or condition metrics, or an explicit request to…

Pseudo-mutation analysis ONLY: answer whether tests would catch a bug if production code changed, which meaningful changes would still…

Sets up and runs Atheris, the coverage-guided Python fuzzer built on libFuzzer.

Sonnet Amplified fullstack engine. 34 modes, SEC-01~15 OWASP security, 13 runtime hooks, 75% token reduction.

This skill should be used when the user asks about "authentication in Next.js", "NextAuth", "Auth.js", "middleware auth", "protected…

Provide comprehensive techniques for penetration testing AWS cloud environments.

Testing patterns for Prowler API: JSON:API, Celery tasks, RLS isolation, RBAC.

Activate this skill when BenchmarkDotNet (BDN) is involved in the task — creating, running, configuring, or reviewing BDN benchmarks.

Implement authentication and authorization with Better Auth - a framework-agnostic TypeScript authentication framework.

Help users work with EIP-7864 Binary Merkle Tries for stateless Ethereum execution using Nethereum.Merkle.Binary (.NET).

Generate end to end automated tests for existing features.

UI test recipe -- composes browser-record (capture) + browser-replay (verify) so every test produces a replayable RVF artifact, not an…

Toolkit for interacting with and testing local web applications using Playwright.

Find correctness bugs in source code through holistic analysis.

Automate Bugbug tasks via Rube MCP (Composio).

Build a compact Coval test set from product requirements, observed conversation failures or a coverage gap.

Run the project's build / typecheck / lint / test commands and emit the build.passing + tests.passing signals devloop convergence reads.

Build an automated adversary infrastructure tracking system in Python (dnspython, python-whois, shodan, networkx) that pivots across…

Builds a structured ransomware incident response playbook aligned with

Build a structured SOC escalation matrix defining severity tiers, response

Builds SOC performance metrics and KPI tracking dashboards measuring