Create beautiful visual art in .png and .pdf documents using design philosophy. Use when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

Use this skill when gathering and documenting business requirements, mapping processes, performing gap analysis, writing business requirements documents (BRDs), or modeling stakeholder impact. Trigger phrases: 'write a business requirements document', 'map this process', 'gather requirements for', 'gap analysis for', 'AS-IS TO-BE process'. Not for writing user stories (use product-manager skill), conducting user research (use ux-researcher), or financial modeling.

Build system optimization covering compilation, caching, incremental builds, and developer tooling. Use when improving build times, configuring CI pipelines, or designing developer tools.

Build a complete brand library for a product — visual asset render pipeline, brand documentation set (BRAND, COPY, MANIFESTO, BIOS, FAQ, GLOSSARY, TONE, PRICING), open-source convention files (README, CONTRIBUTING, SECURITY, CODE_OF_CONDUCT), and a self-contained press kit. This skill should be used when the user asks to "build a brand library / brand kit / press kit / brand assets" for a product, "set up a brand library workflow," "create a positioning manifesto plus visual identity," or any combination of brand documentation + visual asset pipeline. Apply phase-by-phase or run end-to-end. Templates are product-agnostic and use {{TOKEN}} placeholders the skill prompts the user to fill.

Use this skill when writing blog posts, articles, or long-form web content—from quick how-to guides to in-depth opinion pieces. Trigger phrases: 'write a blog post about', 'draft an article on', 'create a post for my blog'. Do NOT use for academic papers, news reporting, or content requiring real-time facts.

Task tracking system for agents via Backlog.md CLI. Use when creating deferred issues during implementation, filing audit findings, working assigned tasks, or managing project work. Optimized for agent workflows: structured issue filing, priority/labeling system, and task completion tracking.

Use this skill when a working tree contains uncommitted changes that need to be split into a sequence of atomic commits — typically after a long session, an agent hand-off, a rebase resolution, or anytime `git status` shows mixed work that was not committed as it landed. The skill assumes the agent has fresh context and did not author most of the diff, so it treats the working tree as evidence to investigate before grouping. Optimizes for `git bisect`: each commit is the smallest buildable and deployable unit, and no smaller. Uses `cortex git commit` for file-level commits and `cortex git patch --diff` when unrelated changes share a file.

Python asyncio and concurrent programming patterns for high-performance applications. Use when building async APIs, concurrent systems, or I/O-bound applications requiring non-blocking operations.

User-triggered deep architectural analysis of a codebase or scoped subtree across eight modes — information architecture, data flow, integration points, UI surfaces, interaction patterns, data model, control flow, and failure modes. This skill should be used when the user asks to "diagram this codebase," "map the architecture," "show the data flow," "give me an ERD," "trace control flow," "find the integration points," "verify the layout pattern," "audit the UX architecture," or any similar request whose primary deliverable is mermaid diagrams plus cited reports under docs/architecture/. Dispatches haiku/sonnet sub-agents in parallel for per-mode exploration, then verifies every citation mechanically before any node lands in a diagram. Not for one-off prose explanations of code (use code-explanation) or for high-level system design from scratch (use system-design).

API Gateway patterns for routing, authentication, rate limiting, and service composition in microservices architectures. Use when implementing API gateways, building BFF layers, or managing service-to-service communication at scale.

Comprehensive REST and GraphQL API design patterns with versioning, pagination, error handling, and HATEOAS principles. Use when designing APIs, defining endpoints, or architecting service contracts requiring production-grade patterns.

Fast mechanical scan for surface-level AI tells in prose artifacts — banned tokens, punctuation patterns, and stock vocabulary that mark text as machine-generated. Auto-engages on writing tasks (READMEs, technical docs, PR descriptions, tutorials, guides, blog posts, release notes, any prose-as-artifact work). Runs as a near-checklist pass before output is presented; catches the obvious tells that generation-time instructions miss. For the slower judgment-based pass on rhythm, structure, and rhetorical reflexes, use ai-tells-review. Not a replacement for voice skills (nick-voice) — this subtracts machine fingerprints, it doesn't add a target voice.

User-invoked structural review for subtle AI tells in prose artifacts — rhythm patterns, rhetorical reflexes, hedging cadence, performative emphasis, and the structural shapes that mark text as machine-generated even after surface tells are cleaned up. Produces a findings report citing each tell by line with a fix-direction, then offers a rewrite pass. Use on artifacts that matter: public READMEs, shipped documentation, blog posts, anything where prose-as-artifact is the deliverable. Layers on top of ai-tells-scan, which handles the mechanical surface pass; this skill handles the judgment-based structural pass that a regex can't catch. Trigger on "review for AI tells," "does this read AI," "strip the AI smell," "make this less AI," or any similar request whose deliverable is structural prose surgery.

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.

Fast, high-signal accessibility triage for pages, components, or PRs targeting WCAG 2.2 AA compliance.

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).

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.

Consult Claude specialist agents during implementation for codebase understanding, pattern checking, security review, debugging help, and more. Use this skill whenever you're unsure about conventions, stuck on a failure, or need expert input before writing code. Does not replace the formal review gates in agent-loops — this is for mid-implementation consultation.

A skill for automating AI CLI tool interactions by handling common prompts and managing continuous operation.

Use this skill to generate well-branded interfaces and assets for Irrlicht, either for production or throwaway prototypes/mocks/etc. Contains essential design guidelines, colors, type, fonts, assets, and UI kit components for prototyping.

Autonomously triage GitHub issues on ingo-eichhorst/Irrlicht. Diagnostic-only: scores each issue against a 6-axis readiness rubric and lands it at ready-for-agent or needs-info, with a one-line justification per label. Triggers: "/ir:triage" (sweep), "/ir:triage #N" (single), "/ir:triage #N #M".

Build and run a dev irrlicht daemon + macOS Swift app for local testing. Asks whether to run a SEPARATE instance alongside production (isolated state, port 7838 — production keeps running) or to REPLACE the running production versions (production port 7837 + production state, so the statusline quota feed and existing sessions show up). Use when the user says "test mac", "restart mac", "rebuild mac", or "/ir:test-mac".

Build and publish an irrlicht release. Bumps version, builds Go daemon + Swift app, creates signed app bundle with icon, packages DMG (branded installer) + PKG, updates docs/changelog/landing page, commits, tags, pushes, and creates GitHub release with assets. Default: patch bump. Use "/ir:release minor" or "/ir:release major".

Sync irrlicht's model-name alias map against codeburn's upstream BUILTIN_ALIASES. Fetches codeburn's src/models.ts, diffs entries against core/pkg/capacity/aliases.go, and proposes additions/changes as a PR. Use when user says '/ir:refresh-aliases', 'refresh aliases', 'sync codeburn aliases', 'check alias map', or when a session prices at $0 for a known model.