matrix-core

Angular playbook for internal enterprise and forms-heavy admin apps — standalone components, typed reactive forms, signals, DI services, routing, and testing. Use when the app class is internal enterprise/admin.

Astro playbook for content/marketing/mostly-static sites — islands architecture, content collections, zero-JS by default, and selective hydration. Use when the app class is content/marketing.

Relational schema design playbook — normalization, keys and identifiers, constraints, indexing, migrations, and modeling common relationships. Use when designing or evolving a database schema.

Deploy an app to Railway — build/start command detection, service config, environment variables, private networking, databases, and health checks. Use when deploying any web app or service to Railway.

React Router v7 framework mode (Remix) playbook for chat/realtime/collaborative apps — loaders/actions, nested routes, streaming, optimistic UI, and why not Next. Use when the app class is chat/realtime.

SvelteKit playbook — routing, load functions, form actions, runes-based state, adapters, and testing. A defensible deviation when bundle size and authoring ergonomics are the priority. Use when the team picks Svelte.

On-demand install of long-tail stacks in a fresh environment — Angular CLI, Rust, uv/Python, Bun, Go, SvelteKit, via apt and mise. Use when the doctrine stack is not preinstalled on the box.

The all-encompassing default for the Paxeer/Matrix runtime. One skill that builds software (files + shell + supervised services + git), runs research (web search + fetch + full Playwright browser), and operates the Paxeer network end-to-end (reads across RPC/explorer/portfolio/price/precompiles, and wallet-gated writes: transfers, DEX swaps, perps, token launches, payment streams, staking, scheduled txs). Verbs build/modify/deliver are lifecycle stages, not domains. Every outcome is grounded in a real tool result — file bytes, exit code, service log, commit hash, fetched content, a quote, or a tx hash — never asserted from memory. Destructive, irreversible, or value-moving actions stop to confirm when unbounded, unauthorized, or unclear.

Write, compile, test, and ship smart contracts on Paxeer (and any EVM chain) with the Tachyon engine. Uploads Solidity (OpenZeppelin + forge-std available), compiles with forge, runs tests, dry-runs, then deploys/interacts on-chain. Writes sign via the embedded wallet; confirms a clean compile + green tests first and records every on-chain action with its tx hash.

Design, implement, and audit inclusive digital products using WCAG 2.2 Level AA standards. Use this skill to generate semantic ARIA for Web and accessibility traits for Web and Native platforms (iOS/Android).

Head-to-head comparison of coding agents (Claude Code, Aider, Codex, etc.) on custom tasks with pass rate, cost, time, and consistency metrics

Design and optimize AI agent action spaces, tool definitions, and observation formatting for higher completion rates.

Structured self-debugging workflow for AI agent failures using capture, diagnosis, contained recovery, and introspection reports.

Add x402 payment execution to AI agents — per-task budgets, spending controls, and non-custodial wallets via MCP tools. Use when agents need to pay for APIs, services, or other agents.

Operate as an agentic engineer using eval-first execution, decomposition, and cost-aware model routing.

Regression testing strategies for AI-assisted development. Sandbox-mode API testing without database dependencies, automated bug-check workflows, and patterns to catch AI blind spots where the same model writes and reviews code.

Build a new API connector or provider by matching the target repo's existing integration pattern exactly. Use when adding one more integration without inventing a second architecture.

REST API design patterns including resource naming, status codes, pagination, filtering, error responses, versioning, and rate limiting for production APIs.

Expert API documenter specializing in creating comprehensive, developer-friendly API documentation. Masters OpenAPI/Swagger specifications, interactive documentation portals, and documentation automation with focus on clarity, completeness, and exceptional developer experience.

Capture architectural decisions made during Claude Code sessions as structured ADRs. Auto-detects decision moments, records context, alternatives considered, and rationale. Maintains an ADR log so future developers understand why the codebase is shaped the way it is.

Monorepo architecture and code organization. Use when understanding project structure, package relationships, import rules, or component organization. Triggers on architecture, structure, packages, imports, hierarchy, dependencies, monorepo, organization.

Write articles, guides, blog posts, tutorials, newsletter issues, and other long-form content in a distinctive voice derived from supplied examples or brand guidance. Use when the user wants polished written content longer than a paragraph, especially when voice consistency, structure, and credibility matter.

Use when analyzing complex codebases for security vulnerabilities, performance issues, and structural patterns - provides systematic AST-based approach using ast-grep for comprehensive code understanding beyond manual inspection

Evidence-first automation inventory and overlap audit workflow for ECC. Use when the user wants to know which jobs, hooks, connectors, MCP servers, or wrappers are live, broken, redundant, or missing before fixing anything.

Transform Claude Code into a fully autonomous agent system with persistent memory, scheduled operations, computer use, and task queuing. Replaces standalone agent frameworks (Hermes, AutoGPT) by leveraging Claude Code's native crons, dispatch, MCP tools, and memory. Use when the user wants continuous autonomous operation, scheduled tasks, or a self-directing agent loop.

Patterns and architectures for autonomous Claude Code loops — from simple sequential pipelines to RFC-driven multi-agent DAG systems.

Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.

Design banners for social media, ads, website heroes, creative assets, and print. Multiple art direction options with AI-generated visuals. Actions: design, create, generate banner. Platforms: Facebook, Twitter/X, LinkedIn, YouTube, Instagram, Google Display, website hero, print. Styles: minimalist, gradient, bold typography, photo-based, illustrated, geometric, retro, glassmorphism, 3D, neon, duotone, editorial, collage. Uses ui-ux-pro-max, frontend-design, ai-artist, ai-multimodal skills.

Use this skill to measure performance baselines, detect regressions before/after PRs, and compare stack alternatives.

Expert blockchain developer specializing in smart contract development, DApp architecture, and DeFi protocols. Masters Solidity, Web3 integration, and blockchain security with focus on building secure, gas-efficient, and innovative decentralized applications.

Turn a one-line objective into a step-by-step construction plan for multi-session, multi-agent engineering projects. Each step has a self-contained context brief so a fresh agent can execute it cold. Includes adversarial review gate, dependency graph, parallel step detection, anti-pattern catalog, and plan mutation protocol. TRIGGER when: user requests a plan, blueprint, or roadmap for a complex multi-PR task, or describes work that needs multiple sessions. DO NOT TRIGGER when: task is completable in a single PR or fewer than 3 tool calls, or user says "just do it".

Use when creating or developing, before writing code or implementation plans - refines rough ideas into fully-formed designs through collaborative questioning, alternative exploration, and incremental validation. Don't use during clear 'mechanical' processes

Brand voice, visual identity, messaging frameworks, asset management, brand consistency. Activate for branded content, tone of voice, marketing assets, brand compliance, style guides.

Build a source-derived writing style profile from real posts, essays, launch notes, docs, or site copy, then reuse that profile across content, outreach, and social workflows. Use when the user wants voice consistency without generic AI writing tropes.

Use this skill to automate visual testing and UI interaction verification using browser automation after deploying features.

Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.

Use this skill to monitor a deployed URL for regressions after deploys, merges, or dependency upgrades.

Use when you need to check, verify, validate or understand code or structure of a file (often code related files or markdown) - automatically detects file type, finds appropriate LSP/linter in mise, and runs validation

Persistent per-project memory for Claude Code. Auto-loads project context on session start, tracks sessions with git activity, and writes to native memory. Commands run deterministic Node.js scripts — behavior is consistent across model versions.

Trace every user-facing button/touchpoint through its full state change sequence to find bugs where functions individually work but cancel each other out, produce wrong final state, or leave the UI in an inconsistent state. Use when: systematic debugging found no bugs but users report broken buttons, or after any major refactor touching shared state stores.