0xDarkMatter
UserExpert skills, agents, commands, rules, hooks & output styles for Claude Code — session continuity + modern CLI tooling for real-world dev workflows
Categories
Indexed Skills (48)
a11y-ops
Web accessibility end to end - WCAG 2.2 conformance, legal obligations (EAA, ADA Title II), auditing with automated + keyboard + screen-reader passes, and the failures that appear on most sites. Triggers on: accessibility, a11y, WCAG, WCAG 2.2, AA conformance, EAA, European Accessibility Act, EN 301 549, ADA Title II, Section 508, accessibility audit, accessibility statement, VPAT, screen reader, NVDA, VoiceOver, JAWS, TalkBack, axe, axe-core, pa11y, Lighthouse accessibility, keyboard navigation, focus trap, focus visible, focus indicator, skip link, tab order, tabindex, aria, aria-label, aria-hidden, landmarks, alt text, form labels, error messages, colour contrast, target size, prefers-reduced-motion, inaccessible, disability, assistive technology, is my site accessible, accessibility compliance.
adr-ops
Author, index, and lint Architecture Decision Records — append-only memory that recovers the WHY behind a system's shape. Triggers on: adr, architecture decision record, decision log, record this decision, supersede an adr, why was this decided, adr template, next adr number.
api-design-ops
API design patterns for REST, gRPC, and GraphQL. Use for: api design, REST, gRPC, GraphQL, protobuf, schema design, api versioning, pagination, rate limiting, error format, OpenAPI, API authentication, JWT, OAuth2, API gateway, webhook, idempotency.
astro-ops
Astro framework patterns, islands architecture, content collections, rendering strategies, and deployment. Use for: astro, islands architecture, content collections, astro cloudflare, view transitions, partial hydration, astrojs, SSG, SSR, hybrid rendering, astro adapter.
asus-router-ops
ASUS router config and hardening: Asuswrt-Merlin, security hardening, encrypted DNS (DoT/DoH), VPN (WireGuard/OpenVPN), guest networks, VLAN/IoT isolation, AiMesh, AiProtection. Triggers on: asus router, asuswrt, merlin, wireguard router, AiProtection, AiMesh, nvram, jffs, IoT isolation.
atomise
Atom of Thoughts (AoT) reasoning - decompose complex problems into atomic units with confidence tracking and backtracking. For genuinely complex reasoning, not everyday questions. Triggers on: atomise, complex reasoning, decompose problem, structured thinking, verify hypothesis.
auth-ops
Authentication and authorization patterns - JWT, OAuth2, sessions, RBAC, ABAC, passkeys, MFA, identity-aware proxies, and Better Auth. Use for: authentication, jwt, oauth2, session, login, rbac, abac, passkey, mfa, totp, api key, token, cookie, csrf, bearer token, refresh token, oidc, cloudflare access, zero trust, Cf-Access-Jwt-Assertion, AUD tag, service auth, better auth.
auto-skill
Evaluate current session for skill-worthy workflows and create reusable skills. Triggers on: auto-skill, create skill from session, save workflow, capture this as a skill.
bash-ops
Defensive Bash scripting for production automation, CI scripts, and agent-facing tools. Triggers on: bash, shell script, defensive bash, bash strict mode, set -euo pipefail, set -Eeuo pipefail, shellcheck, trap, IFS, cleanup trap, mktemp, getopts, argument parsing, exit codes, stream separation, stdout stderr, quoting, word splitting, pipefail, subshell, CI script, shell footgun, bats, shfmt, POSIX, portable shell.
ci-cd-ops
CI/CD pipeline patterns with GitHub Actions, release automation, and testing strategies. Use for: github actions, workflow, CI, CD, pipeline, deploy, release, semantic release, changesets, goreleaser, matrix, cache, secrets, environment, artifact, reusable workflow, composite action.
claude-api-ops
Building applications ON Claude - the Anthropic API and Claude Agent SDK. Use for: anthropic api, claude api, messages api, tool use, function calling, prompt caching, agent sdk, claude-agent-sdk, structured output, json schema output, batches api, extended thinking, adaptive thinking, model selection, claude pricing, build claude agent, anthropic sdk, stop_reason handling, streaming claude, token counting, cache_control, output_config, tool_choice, agentic loop, rate limits anthropic, context engineering, context window budget, compaction, context editing, context_management, clear_tool_uses, memory tool, context rot, tool result bloat, subagent context isolation.
claude-code-ops
Claude Code internals - hooks, skill frontmatter, headless mode, and extension debugging, current as of June 2026. Triggers: hooks, hook events, hook not firing, PreToolUse/PostToolUse/SessionStart, skill frontmatter, SKILL.md, skill not triggering, headless, claude -p, CI/CD scripting, plugin validate, MCP server not connecting, agent vs skill vs command vs hook.
cli-ops
Patterns for building production-quality CLI tools with predictable behavior, parseable output, and agentic workflows. Triggers: cli tool, command line tool, build cli, cli patterns, agentic cli, cli design, typer cli, click cli.
cloudflare-ops
Cloudflare Workers + Wrangler edge ops: runtime, bindings, local dev, secrets, deploy/CI, Pages-vs-Workers. Triggers on: cloudflare workers, wrangler, wrangler deploy, wrangler.toml, KV, D1, R2, durable objects, queues, vectorize, compatibility_date, edge functions, illegal invocation, waitUntil, caches API, smart placement, email service, vitest-pool-workers, wrangler dev host.
code-stats
Analyze codebase with tokei (fast line counts by language) and difft (semantic AST-aware diffs). Get quick project overview without manual counting. Triggers on: how big is codebase, count lines of code, what languages, show semantic diff, compare files, code statistics.
color-ops
Color for developers: color spaces, accessibility contrast, palette generation, CSS color functions, design tokens, dark mode. Triggers on: color, palette, contrast, WCAG, APCA, OKLCH, color-mix, dark mode colors, design tokens, CVD, color blind, P3, sRGB.
container-orchestration
Docker, Kubernetes, and AWS ECS/Fargate patterns. Triggers on: Dockerfile, docker-compose, kubernetes, k8s, helm, pod, deployment, service, ingress, container, image, ecs, fargate, task definition, ecs service, awsvpc, FARGATE_SPOT, ALB, ecs vs kubernetes.
craftcms-ops
Craft CMS 5 development - content modeling, Twig templating, element queries, GraphQL, plugins, and the Craft 4-to-5 Matrix-as-entries change. Use for: craft cms, craftcms, craft 5, twig, pixel & tonic, matrix field, entry types, sections, element query, eager loading, blitz, project config, headless craft, craft graphql, craft plugin, craft 4 to 5 upgrade.
cypress-ops
Cypress end-to-end and component testing operations - selector/retry-ability strategy, cy.intercept network stubbing, cy.session auth, component vs e2e, flake diagnosis, CI, Test Replay. Use for: cypress, e2e test, component test, cy.get, cy.intercept, cy.session, data-cy, data-test, retry-ability, flake, flaky test, cypress.config, cy.mount, Test Replay, custom commands, fixtures.
data-processing
Process JSON with jq and YAML/TOML with yq. Filter, transform, query structured data efficiently. Triggers on: parse JSON, extract from YAML, query config, Docker Compose, K8s manifests, GitHub Actions workflows, package.json, filter data.
debug-ops
Systematic debugging methodology, language-specific debuggers, and common scenario playbooks. Use for: debug, debugging, bug, crash, hang, memory leak, race condition, deadlock, bisect, reproduce, root cause, breakpoint, profiling, performance issue, segfault, stack trace, core dump.
docker-ops
Docker containerization patterns, Dockerfile best practices, multi-stage builds, and Docker Compose. Use for: docker, Dockerfile, docker-compose, container, image, multi-stage build, docker build, docker run, .dockerignore, health check, distroless, scratch image, BuildKit, layer caching, container security.
explain
Deep explanation of complex code, files, or concepts. Dispatches skill-preloaded agents, uses structural search, generates mermaid diagrams. Triggers on: explain, deep dive, how does X work, architecture, data flow.
ffmpeg-ops
Comprehensive ffmpeg/ffprobe media processing: transcode, cut/trim/concat, color grading, loudness normalization, subtitles, GIFs, HLS packaging, hardware encoding, and quality gates (VMAF). Triggers on: ffmpeg, ffprobe, transcode, compress/convert video, extract audio, color grade, hls.
figma-ops
Router and composition workflows for Figma via the official Figma MCP: which Figma skill/tool for which job, capture-to-canvas (screenshots or shotcraft crops into a Figma file), moodboard and reference-board composition (grid, plus, loose-plus arrangements with a deterministic layout planner), canvas craft rules the API skills don't cover, and multi-account routing. Triggers on: figma, moodboard, brand board, reference board, put these screenshots in figma, compose in figma, arrange images in figma, plus arrangement, which figma skill, figma account, upload to figma, delete figma page.
file-search
Modern file and content search using fd, ripgrep (rg), and fzf. Triggers on: fd, ripgrep, rg, find files, search code, fzf, fuzzy find, search codebase.
genart-ops
Generative art programming - three.js scenes, p5.js sketches, SVG generation, GLSL shaders, procedural algorithms, and color for creative coding. Use for: generative art, creative coding, three.js, p5.js, SVG, GLSL, shader, noise, perlin, simplex, flow field, particle system, SDF, ray marching, procedural, L-system, voronoi, delaunay, cellular automata, wave function collapse, instanced mesh, post-processing, bloom, WebGL, canvas, fragment shader, vertex shader, FBM, domain warping.
git-ops
Git + worktree orchestrator: status survey, per-worktree triage, commits, PRs, branches, releases, rebases — reads inline, writes to a background agent. Triggers on: git status, anything to commit, anything to push, commit, push, create PR, rebase, release, tag, changelog, worktree, land worktrees.
github-ops
GitHub remote operations and README authoring: repo creation, metadata, releases, issue/PR management with preview-before-send, README as a landing page (badge row, features-as-benefits, screenshots, Recent Updates), and read-only security auditing. Triggers on: write a README, improve the README, README badges, README features section, push to github, ship release, gh release, audit github repo, gh issue, gh pr, merge PR, branch protection, secret scanning, SECURITY.md.
go-ops
Go development patterns, concurrency, error handling, testing, and project structure. Use for: golang, go, goroutine, channel, context, errgroup, go test, go mod, go build, interface, generics, table-driven tests, worker pool, sync.Mutex, sync.WaitGroup, pprof, go vet, golangci-lint, go workspace, functional options, middleware, http handler.
hono-ops
Hono on Cloudflare Workers - composition, middleware, typed bindings, validation, RPC, streaming, testing. Use for: hono, hono middleware, app.route, hono rpc, c.env bindings, onError, zValidator, vitest-pool-workers, spa fallback worker.
icon-ops
Source, vet, normalize and ship SVG icons for web UI - set selection, licence and trademark traps, currentColor theming, sprite/inline delivery, and accessibility. Triggers on: icon, icons, svg icon, find an icon, add an icon, icon set, icon library, iconify, lucide, heroicons, phosphor, tabler, feather, material symbols, font awesome, simple icons, brand logo, icon sprite, svg sprite, symbol use, currentColor, icon won't change colour, icon font, icon accessibility, aria-hidden icon, icon-only button, icon size, icons look inconsistent, mixed icon sets, normalize svg, strip svg cruft, optimise svg, brandfetch, company logo, client logo, logo by domain, brand assets api, logo api, thesvg, brand icon, brandmark, brand mark, find a logo, logo wall, partner logo, greyscale logo, grayscale, tint a logo, reverse out, knockout, mono logo, dark mode logo, favicon, app icon, apple-touch-icon, maskable icon, svg id collision.
introspect
Analyze Claude Code session logs and surface productivity improvements. Extracts thinking blocks, tool usage stats, error patterns, debug trajectories - then generates friendly, actionable recommendations. Triggers on: introspect, session logs, trajectory, analyze sessions, what went wrong, tool usage, thinking blocks, session history, my reasoning, past sessions, what did I do, how can I improve.
isometric-ops
Create, refine, compose, and export isometric/dimetric assets for web and games: projection math, SVG/CSS/three.js generation, pixel-art and Blender workflows, engine tilemaps, ControlNet AI generation, and the iso-studio composer. Triggers on: isometric, dimetric, tileset, y-sort.
iterate
Autonomous single-metric improvement loop - modify, measure, keep or discard, repeat (Karpathy autoresearch). One session, git as memory, bisect-on-regression. Triggers: iterate, improve autonomously, run overnight, keep improving, improvement loop, iterate until done.
javascript-ops
JavaScript and Node.js patterns, async programming, modules, runtime internals, and modern ES2024+ features. Use for: javascript, js, node, nodejs, esm, commonjs, promise, async await, event loop, v8, npm, es6, es2024, worker threads, streams, event emitter, prototype, closure.
laravel-ops
Laravel framework patterns, Eloquent ORM, authentication, queues, and testing. Use for: laravel, eloquent, artisan, blade, php, sanctum, livewire, inertia, pest, phpunit, forge, vapor, queue, middleware, migration, factory, seeder.
leveldb-ops
Read and inspect LevelDB stores - especially Chromium/Electron app state (Local Storage, IndexedDB, Session Storage). Triggers on: leveldb, .ldb files, IndexedDB, Local Storage, Chromium storage, Electron app state, claude.ai cache, browser forensics, decode app state, claude desktop state.
log-ops
Log analysis and JSONL processing - structured extraction, cross-log correlation, timeline reconstruction, pattern search
loop-ops
Design and safely run OUTER loops - scheduled discover-triage-implement-verify-escalate agent loops. Native primitives schedule; loop-ops governs. Risk-tier ladder (L1 report -> L3 unattended), STATE/run-log/budget spine, kill switch, pattern catalog. Triggers: outer loop, scheduled/autonomous agent loop, PR watch, CI watch, dep-bump loop, run on a schedule, kill switch, risk tier, CronCreate, scheduled task, cloud routine, /loop.
mac-ops
macOS workstation diagnostics: kernel panics, failing drives, launchd startup audit, wake reasons, TCC denials, APFS snapshots. Triggers on: mac is slow, won't boot, kernel panic, login loop, drive failing, launchd, TCC permissions, Full Disk Access, Gatekeeper, sysdiagnose.
mapbox-ops
Mapbox GL JS v3 (web) toolkit: custom markers, symbol/geojson layers, clustering, style expressions, 3D terrain/fill-extrusion, heatmaps, choropleths, camera animation, and performance gotchas. Use for any Mapbox GL JS work — markers, layers, style, 3D, or headless map verification.
markitdown
Convert local documents to Markdown using Microsoft's markitdown CLI. Best for: PDF, Word, Excel, PowerPoint, images (OCR), audio. Can fetch URLs but Jina is faster for web. Triggers on: convert to markdown, read PDF, parse document, extract text from, docx, xlsx, pptx, OCR image, local file.
mcp-ops
Model Context Protocol server development, tool design, resource handling, and transport configuration. Use for: mcp, model context protocol, mcp server, mcp tool, mcp resource, fastmcp, mcp transport, stdio, sse, streamable http, mcp inspector, tool handler, mcp prompt.
migrate-ops
Framework and language migration patterns - version upgrades, breaking changes, dependency audit, safe rollback. Use for: migrate, migration, upgrade, version bump, breaking changes, deprecation, dependency audit, npm audit, pip-audit, codemod, jscodeshift, rector, rollback, semver, changelog, framework upgrade, language upgrade, React 19, Vue 3, Next.js App Router, Laravel 13, Angular, Python 3.14, Node 26, TypeScript 6, Go 1.26, Rust 2024, PHP 8.5.
doc-scanner
Scans for project documentation files (AGENTS.md, CLAUDE.md, GEMINI.md, COPILOT.md, CURSOR.md, WARP.md, and 15+ other formats) and synthesizes guidance. Auto-activates when user asks to review, understand, or explore a codebase, when starting work in a new project, when asking about conventions or agents, or when documentation context would help. Can consolidate multiple platform docs into unified AGENTS.md.
find-replace
Modern find-and-replace using sd (simpler than sed) and batch replacement patterns. Triggers on: sd, find replace, batch replace, sed replacement, string replacement, rename.
evals-ops
Build and run evals for LLM and agent systems: golden datasets, LLM-as-a-judge with bias control, trajectory/step/outcome scoring, adversarial refuters, and CI regression gates. Triggers on: eval, evals, eval harness, golden dataset, golden set, LLM-as-a-judge, judge rubric, judge bias, judge calibration, Cohen kappa, agreement with human labels, pass@k, pass^k, trajectory eval, step-level eval, tool-call accuracy, regression gate, eval CI, blocking vs advisory eval, faithfulness score, DeepEval, Braintrust, Opik, Langfuse, AgentOps, did my prompt change make it worse, is my agent getting better.
Bio shown is the top-scored skill's repo description as a fallback — real GitHub bios land in a future update.