Disciplined diagnosis loop for hard bugs and performance regressions. Reproduce → minimise → hypothesise → instrument → fix → regression-test. Use when user says "diagnose this" / "debug this", reports a bug, says something is broken/throwing/failing, or describes a performance regression.
Explores a brownfield codebase with parallel agents and writes a concise factual map under docs/codebase/ — stack, integrations, architecture, structure, conventions, testing, and concerns. Use when onboarding onto an unfamiliar or undocumented codebase, when the user asks to map, document, or explore a codebase, or to refresh an existing docs/codebase/ map.
Grilling session that challenges your plan against the existing domain model, sharpens terminology, and updates documentation (CONTEXT.md, ADRs) inline as decisions crystallise. Use when user wants to stress-test a plan against their project's language and documented decisions.
Find deepening opportunities in a codebase, informed by the domain language in CONTEXT.md and the decisions in docs/adr/. Use when the user wants to improve architecture, find refactoring opportunities, consolidate tightly-coupled modules, or make a codebase more testable and AI-navigable.
Build a throwaway prototype to flesh out a design before committing to it. Routes between two branches — a runnable terminal app for state/business-logic questions, or several radically different UI variations toggleable from one route. Use when the user wants to prototype, sanity-check a data model or state machine, mock up a UI, explore design options, or says "prototype this", "let me play with it", "try a few designs".
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My own additions are listed first; the original Matt's content follows below, unchanged.
Extra skill groups I've layered on top of the base pack, grouped by workflow.
Fast, multi-stage Java coding-interview / timeboxed-task helpers (e.g. live coding). Lean, slash-only variants of the base engineering skills that trade depth for speed — clarify assumptions and blockers, write a just-enough spec, then implement test-first. Support multiple interview stages. Run them per stage, in order: grill → spec → implement. Some Java specifics exist, but the general approach is language-agnostic.
CONTEXT.md terms and hard-to-reverse ADRs inline.docs/task-spec.md from the grilling conversation — no interview, no issue tracker.Map an unfamiliar or undocumented codebase before working in it.
/gsd-map-codebase simplified version. Explore a brownfield codebase with parallel agents and write a concise factual map under docs/codebase/ (stack, integrations, architecture, structure, conventions, testing, concerns).My agent skills that I use every day to do real engineering - not vibe coding.
Developing real applications is hard. Approaches like GSD, BMAD, and Spec-Kit try to help by owning the process. But while doing so, they take away your control and make bugs in the process hard to resolve.
These skills are designed to be small, easy to adapt, and composable. They work with any model. They're based on decades of engineering experience. Hack around with them. Make them your own. Enjoy.
If you want to keep up with changes to these skills, and any new ones I create, you can join ~60,000 other devs on my newsletter:
npx skills@latest add altmerian/skills
Pick the skills you want, and which coding agents you want to install them on. Make sure you select /setup-matt-pocock-skills.
Run /setup-matt-pocock-skills in your agent. It will:
/triage uses labels)Bam - you're ready to go.
I built these skills as a way to fix common failure modes I see with Claude Code, Codex, and other coding agents.
"No-one knows exactly what they want"
David Thomas & Andrew Hunt, The Pragmatic Programmer
The Problem. The most common failure mode in software development is misalignment. You think the dev knows what you want. Then you see what they've built - and you realize it didn't understand you at all.
This is just the same in the AI age. There is a communication gap between you and the agent. The fix for this is a grilling session - getting the agent to ask you detailed questions about what you're building.
The Fix is to use:
/grill-me - for non-code uses/grill-with-docs - same as /grill-me, but adds more goodies (see below)These are my most popular skills. They help you align with the agent before you get started, and think deeply about the change you're making. Use them every time you want to make a change.
With a ubiquitous language, conversations among developers and expressions of the code are all derived from the same domain model.
Eric Evans, Domain-Driven-Design
The Problem: At the start of a project, devs and the people they're building the software for (the domain experts) are usually speaking different languages.
I felt the same tension with my agents. Agents are usually dropped into a project and asked to figure out the jargon as they go. So they use 20 words where 1 will do.
npx claudepluginhub altmerian/skillsUltra-compressed communication mode. Cuts 65% of output tokens (measured) while keeping full technical accuracy by speaking like a caveman.
Frontend design skill for UI/UX implementation
Memory compression system for Claude Code - persist context across sessions
Marketing skills for AI agents — conversion optimization, copywriting, SEO, paid ads, ad creative, and growth
Comprehensive UI/UX design plugin for mobile (iOS, Android, React Native) and web applications with design systems, accessibility, and modern patterns
Standalone image generation plugin using Nano Banana MCP server. Generates and edits images, icons, diagrams, patterns, and visual assets via Gemini image models. No Gemini CLI dependency required.