0xDarkMatter
UserCustom commands, skills, and agents for Claude Code
Categories
Indexed Skills (49)
adr-ops
Author, index, and lint Architecture Decision Records — append-only project memory that recovers the WHY behind a system's shape. Scaffold the next sequential ADR, enforce the canonical frontmatter + section format, manage supersession with bidirectional integrity, and treat the directory as the index. Triggers on: adr, architecture decision record, decision record, decision log, why was this decided, record this decision, supersede an adr, adr template, adr lint, adr index, docs/adr, append-only decision, new adr, 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 configuration and hardening - Asuswrt-Merlin firmware, security hardening, encrypted DNS (DoT/DoH), VPN (WireGuard/OpenVPN), guest networks, VLAN/IoT isolation, AiMesh, AiProtection, JFFS scripts, QoS. Use for: asus router, asuswrt, merlin, asuswrt-merlin, router hardening, DNS Director, AiProtection, AiMesh, guest network, VPN Director, wireguard router, openvpn router, nvram, jffs, DoT, DoH, port forwarding, 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, and MFA. Use for: authentication, authorization, jwt, oauth, oauth2, session, login, rbac, abac, passkey, mfa, totp, api key, token, auth, cookie, csrf, cors credentials, bearer token, refresh token, oidc.
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.
claude-code-ops
Claude Code internals - hooks, skills, subagents, headless mode, and debugging, current as of June 2026. Use for: hooks, hook events, hook not firing, PreToolUse, PostToolUse, SessionStart, Stop hook, hook script, stdin JSON contract, tool validation, audit logging, skill frontmatter, SKILL.md, skill not loading, skill not triggering, disable-model-invocation, context fork, dynamic context injection, skill description budget, headless, claude -p, CLI automation, --print, output-format, stream-json, json-schema structured output, CI/CD scripting, bare mode, background agents, debug, troubleshoot, not working, agent not found, plugin not loading, claude plugin validate, /doctor, --safe-mode, MCP server not connecting, settings precedence, extension architecture, which extension type, agent vs skill vs command vs hook, where to put a skill, extension scope, plugin design, authoring an agent, writing a skill description.
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-platform operations - Workers runtime, bindings, local dev, secrets, deploy/CI, Pages-vs-Workers, observability. Use for: cloudflare, workers, wrangler, cloudflare pages, KV, D1, R2, durable objects, queues, hyperdrive, workers ai, vectorize, wrangler.toml, wrangler.jsonc, wrangler deploy, wrangler dev, wrangler secret, bindings, compatibility_date, static assets, edge functions, cron triggers, tail workers, gradual deployments.
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, and CVD simulation. Use for: color, colour, palette, contrast, accessibility, WCAG, APCA, OKLCH, OKLAB, HSL, color picker, color-mix, dark mode colors, design tokens, color system, color scale, color ramp, gradient, CVD, color blind, gamut, P3, sRGB, color naming, color harmony, color temperature, semantic colors.
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 operations - probe-first media processing: transcode and compress (H.264/H.265/AV1/Opus), frame-accurate cut/trim/concat, EDL-driven editing, color grading and .cube LUTs, audio loudnorm and mixing, STT/Whisper audio prep, subtitles, GIF and thumbnails, HLS packaging, hardware encoding (NVENC/QSV/AMF/VideoToolbox), restoration, scene and silence detection, VMAF quality gates, screen capture, yt-dlp interop. Triggers on: ffmpeg, ffprobe, transcode, convert video, compress video, encode video, extract audio, trim video, cut video, concat videos, video to gif, thumbnail, contact sheet, burn subtitles, watermark, resize video, crop video, change fps, slow motion, timelapse, loudnorm, normalize audio, audio for whisper, transcription prep, scene detection, silence detection, remove silence, color grade, LUT, tonemap HDR, vmaf, nvenc, hardware encode, hls, remux, faststart, deinterlace, stabilize video, denoise video, screen record, EDL, keyframes.
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
Full git + worktree orchestrator. Rich status survey, per-worktree triage (prunable/WIP/ghost/orphan), commits, PRs, branches, releases, rebases — reads run inline, writes dispatch to a background Sonnet agent. Triggers on: status, state, where are we, git status, anything to commit, anything to push, commit, push, pull request, create PR, git diff, rebase, stash, branch, merge, release, tag, changelog, semver, cherry-pick, bisect, worktree, worktree survey, prunable worktrees, land worktree.
github-ops
GitHub remote operations — repo creation, metadata (description/homepage/topics), releases, README 'Recent Updates' enforcement, and issue / PR management with preview-before-send discipline. Companion to git-ops (local) and push-gate (pre-push safety). Three modes: new (first publish), update (subsequent release), audit (read-only checklist), plus atomic operations for issues and PRs. Triggers on: push to github, publish repo, ship release, cut release, gh release, set topics, repo description, github metadata, recent updates section, audit github repo, repo visibility, make repo public, gh repo create, gh issue, gh pr, create issue, comment on issue, close issue, triage issue, create PR, review PR, merge PR, pre-merge check, pr checks.
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.
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.
iterate
Autonomous improvement loop - modify, measure, keep or discard, repeat. Inspired by Karpathy's autoresearch. Triggers on: iterate, improve autonomously, run overnight, keep improving, autoresearch, improvement loop, iterate until done, autonomous iteration, batch experiments.
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
mac-ops
Comprehensive macOS workstation operations — diagnose kernel panics, identify failing drives, audit launchd startup items, decode wake reasons, triage TCC permission denials, manage APFS snapshots, recover from no-boot. Use for: Mac is slow, slow bootup, won't boot, kernel panic, kernel_task hot, mds_stores CPU, photoanalysisd, cloudd, login loop, gray screen, sleep wake failure, drive failing, IO errors, APFS snapshots eating space, Time Machine local snapshots, Spotlight indexing, launchd, LaunchAgent, LaunchDaemon, login items, TCC permissions, Full Disk Access, Screen Recording denied, Gatekeeper, quarantine, com.apple.quarantine, app is damaged, helper tool, /Library/PrivilegedHelperTools, pmset, wake reasons, dark wake, sysdiagnose, panic.ips, DiagnosticReports, configuration profile, MDM profile, remote diagnostics over SSH.
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 11, Angular, Python 3.12, Node 22, TypeScript 5, Go 1.22, Rust 2024, PHP 8.4.
monitoring-ops
Observability patterns - metrics, logging, tracing, alerting, and infrastructure monitoring. Use for: monitoring, observability, prometheus, grafana, metrics, alerting, structured logging, distributed tracing, opentelemetry, SLO, SLI, dashboard, health check, loki, jaeger, datadog, pagerduty.
net-ops
Cross-platform network troubleshooting (Windows, macOS, Linux) via local or remote shell. Use for: DNS broken, can't resolve hostnames, nslookup/dig works but apps fail, NRPT, WFP, scutil, /etc/resolver, systemd-resolved, /etc/resolv.conf, NetworkManager, VPN DNS leak residue (ProtonVPN/Mullvad/WireGuard/AnyConnect), AV/firewall blocking DNS or DoH, Tailscale DNS interaction, intermittent connectivity, remote diagnostics over SSH.
nginx-ops
Nginx configuration, reverse proxy, SSL/TLS, load balancing, and performance tuning. Use for: nginx, reverse proxy, load balancer, proxy_pass, ssl certificate, lets encrypt, web server, location block, upstream, server block, nginx config, certbot, hsts, gzip, rate limiting.
okf-ops
Assess, validate, and adopt the Open Knowledge Format (OKF) across markdown+frontmatter knowledge bases. Use to scan a doc repo for OKF-readiness (how frontmatter-consistent it already is), validate a bundle for conformance, find good OKF-adoption candidates among many repos, or migrate a frontmatter-heavy repo onto OKF. Triggers on: OKF, open knowledge format, knowledge bundle, knowledge base format, assess docs, doc repo readiness, frontmatter conformance, validate frontmatter, type frontmatter, markdown knowledge base, adopt OKF, is this repo OKF-ready, index.md log.md.
payloadcms-ops
Payload CMS 3 (Next.js-native) architecture - collections, globals, fields, access control, hooks, Local API, storage adapters, and database (Postgres/MongoDB/SQLite). Use for: payload, payloadcms, payload cms, payload 3, collection config, access control, payload hooks, local api, payload fields, multi-tenant payload, payload nextjs, payload s3, payload r2, payloadcms architecture, headless cms typescript.
perf-ops
Performance profiling and optimization orchestrator - diagnoses symptoms, dispatches skill-preloaded profiling agents, manages before/after comparisons. Triggers on: performance, profiling, flamegraph, pprof, py-spy, clinic.js, memray, heaptrack, bundle size, webpack analyzer, load testing, k6, artillery, vegeta, locust, benchmark, hyperfine, criterion, slow query, EXPLAIN ANALYZE, N+1, caching, optimization, latency, throughput, p99, memory leak, CPU spike, bottleneck.
pigeon
Inter-session pmail - send and receive messages between Claude Code sessions running in different project directories. Uses global SQLite database at ~/.claude/pmail.db. Triggers on: mail, pmail, send message, check mail, inbox, inter-session, message another session, pigeon.
playwright-ops
Playwright end-to-end testing operations - selectors, fixtures, network mocking, auth, parallelism, CI, visual regression, flake hunting. Use for: playwright, e2e test, end-to-end testing, browser test, getByRole, page object, storageState, trace viewer, flaky test, test sharding, visual regression, toHaveScreenshot, playwright config, codegen.
portless-ops
Portless local-dev HTTPS proxy operations and integration. Use for: portless setup, named .localhost or custom-TLD URLs (axiom.lab, myapp.test), portless alias for externally-managed services, replacing Caddy/nginx for local dev, HTTP/2 dev servers, local CA generation and trust, portless service install (boot persistence on Windows/macOS/Linux), portless monorepo orchestration, Tailscale/Funnel dev sharing, git-worktree subdomain routing, portless.json configuration, agent-friendly URL discovery via portless get <name>, MCP-integration patterns, OAuth-with-portless TLD selection (.dev/.test for Google/Apple compliance), Vite/Next.js/Astro framework port injection, Windows openssl PATH gotcha, curl-vs-browser cert handling, custom TLD pitfalls (.local/.dev/.localhost), troubleshooting EADDRINUSE, /etc/hosts auto-sync, portless trust system store integration.
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.
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.
Bio shown is the top-scored skill's repo description as a fallback — real GitHub bios land in a future update.