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Agent skills

Skills you can use with AI coding agents, indexed from public GitHub repositories.

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secure-coding-practices Secure coding practices and defensive programming patterns for building security-first applications. Use when implementing authentication, handling user input, managing sensitive data, or conducting secure code reviews.
NickCrew/Claude-Cortex 13
systematic-debugging Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes - four-phase framework (root cause investigation, pattern analysis, hypothesis testing, implementation) that ensures understanding before attempting solutions
NickCrew/Claude-Cortex 13
skill-installer Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos).
NickCrew/Claude-Cortex 13
skill-creator Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations.
NickCrew/Claude-Cortex 13
token-efficiency Compressed communication using symbols and abbreviations. Use when context is limited or brevity is needed.
NickCrew/Claude-Cortex 13
your-skill-name Brief description of what this skill does (1-2 sentences). Use when [specific trigger condition]. Keep under 200 words total.
NickCrew/Claude-Cortex 13
reasoning-controls Use when adjusting reasoning depth, budgets, or metrics visibility - provides guidance for selecting and applying reasoning controls safely.
NickCrew/Claude-Cortex 13
workflow-feature Complete feature development workflow from design to deployment. Use when implementing new features or functionality.
NickCrew/Claude-Cortex 13
subagent-driven-development Use when executing implementation plans with independent tasks in the current session - dispatches fresh subagent for each task with code review between tasks, enabling fast iteration with quality gates
NickCrew/Claude-Cortex 13
security-testing-patterns Security testing patterns including SAST, DAST, penetration testing, and vulnerability assessment techniques. Use when implementing security testing pipelines, conducting security audits, or validating application security controls.
NickCrew/Claude-Cortex 13
test-review Review test quality and audit test coverage for any module. This skill should be used when reviewing existing tests, auditing test gaps, writing new tests, or when asked to assess test health. It pipelines testing standards into the audit workflow to produce a prioritized gap report. The output is a report, not code — do not write test implementations until the report is reviewed.
NickCrew/Claude-Cortex 13
ux-review Multi-perspective UX review combining usability, accessibility, and interaction design analysis.
NickCrew/Claude-Cortex 13
defense-in-depth Use when invalid data causes failures deep in execution, requiring validation at multiple system layers - validates at every layer data passes through to make bugs structurally impossible
NickCrew/Claude-Cortex 13
terraform-best-practices Terraform infrastructure-as-code best practices for scalable and maintainable cloud infrastructure. Use when writing Terraform modules, managing infrastructure state, or implementing infrastructure automation at scale.
NickCrew/Claude-Cortex 13
agent-loops Complete operational workflow for implementer agents (Codex, Gemini, etc.) making code changes and writing tests. Drives all work through atomic commits — each loop operates on the smallest complete, reviewable change. Defines the Code Change Loop, Test Writing Loop, Lint Gate, and Issue Filing process with circuit breakers, severity levels, and escalation rules. Requires `cortex git commit` for all commits. Includes bundled provider-aware review scripts that keep same-model shell-outs as the last resort, plus a fresh-context Codex fallback for code review and test audit. Use this skill when starting any implementation task.
NickCrew/Claude-Cortex 13
cortex-skills-loop Drives the cortex skills recommend-feedback-rate loop. Use when a context change occurs (new file types, domain shift, task pivot) or when a task completes and skill effectiveness should be recorded.
NickCrew/Claude-Cortex 13
workflow-feature-development Complete workflow for developing new features from design to deployment. Use when starting a new feature, adding functionality, or building something new.
NickCrew/Claude-Cortex 13
kubernetes-security-policies Kubernetes security policies, RBAC, and Pod Security Standards for hardened cluster deployments. Use when implementing cluster security, defining network policies, or enforcing security compliance in Kubernetes environments.
NickCrew/Claude-Cortex 13
github-actions-workflows GitHub Actions workflow patterns for CI/CD including matrix builds, reusable workflows, secrets management, and caching strategies. Use when setting up or optimizing GitHub Actions pipelines.
NickCrew/Claude-Cortex 13
workflow-security-audit Comprehensive security assessment and remediation. Use for security reviews, compliance checks, vulnerability assessments.
NickCrew/Claude-Cortex 13
evaluator-optimizer Iterative refinement workflow for polishing code, documentation, or designs through systematic evaluation and improvement cycles. Use when refining drafts into production-grade quality.
NickCrew/Claude-Cortex 13
cqrs-event-sourcing CQRS and Event Sourcing patterns for scalable, auditable systems with separated read/write models. Use when building audit-required systems, implementing temporal queries, or designing high-scale applications with complex domain logic.
NickCrew/Claude-Cortex 13
verification-before-completion Use when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidence before assertions always
NickCrew/Claude-Cortex 13
writing-skills Use when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing, iterating until bulletproof against rationalization
NickCrew/Claude-Cortex 13