Tools & Utilities
Essential command-line tools and system utilities.
using-argc-argcfile
Create and modify Argcfiles using the special syntax required. Use this when editing Argcfile.sh, @argc, or any shell script that contains `argc --argc-eval`.
building-python-clis
Builds command-line interfaces for Python libraries using Click or Typer. Includes command groups, argument handling, progress bars, shell completion, and CLI testing with CliRunner. Use when adding CLI functionality to a library or building standalone command-line tools.
debugging-and-troubleshooting
Systematic error diagnosis and debugging workflow for Rust code. Use when code isn't working, tests fail, or runtime errors occur.
session-replay
Analyze claude-trace JSONL files for session health, patterns, and actionable insights. Use when debugging session issues, understanding token usage, or identifying failure patterns.
oberdebug
Use when encountering ANY bug, error, unexpected behavior, test failure, crash, wrong output, missing output, flaky behavior, race condition, regression, "it doesn't work", "something's wrong", "not working as expected", "should do X but does Y", broken functionality, logic error, runtime error, exception, assertion failure, timeout, hang, or any situation where code behavior differs from intent. Triggers on "debug", "fix", "broken", "failing", "investigate", "figure out why", "not working".
d365fo-debugging
Complete D365 Finance & Operations debugging framework. Routes symptoms to correct playbook (Finance, SCM, WMS, Batch, Security, Integration, Performance, Reporting). Activates for D365, Dynamics, AX, voucher, posting, batch job, SSRS, DMF, work order, wave, security, can't post, missing, wrong amount, slow, stuck.
atomic-bead-filing
Use when noticing something off (code smell, design smell, workaround) while working and want to capture it without losing flow - grounds observation in codebase and files a proper bead that future agents can execute
threejs-graphics-optimizer
Performance optimization rules for THREE.js and graphics programming. Covers mobile-first optimization, fallback patterns, memory management, render loop efficiency, and general graphics best practices for smooth 60fps experiences across devices.
reverse-engineering-firmware-analysis
Firmware extraction and IoT security analysis (RE Level 5) for routers and embedded systems. Use when analyzing IoT firmware, extracting embedded filesystems (SquashFS/JFFS2/CramFS), finding hardcoded credentials, performing CVE scans, or auditing embedded system security. Handles encrypted firmware with known decryption schemes. Completes in 2-8 hours with binwalk+firmadyne+QEMU emulation.
large-scale-map-visualization
Master of high-performance web map implementations handling 5,000-100,000+ geographic data points. Specializes in Leaflet.js optimization, Supercluster algorithms, viewport-based loading, canvas rendering, and progressive disclosure UX patterns.
reverse-engineering-quick-triage
Fast binary analysis with string reconnaissance and static disassembly\ \ (RE Levels 1-2). Use when triaging suspicious binaries, extracting IOCs quickly,\ \ or performing initial malware analysis. Completes in \u22642 hours with automated\ \ decision gates."
reverse-engineering-deep-analysis
Advanced binary analysis with runtime execution and symbolic path exploration (RE Levels 3-4). Use when need runtime behavior, memory dumps, secret extraction, or input synthesis to reach specific program states. Completes in 3-7 hours with GDB+Angr.
microsim-screen-capture
This skill automates the capture of high-quality screenshots for MicroSim visualizations using Chrome headless mode. Use this skill when working with MicroSims that need preview images for social media sharing, documentation, or quality assessment. The skill handles JavaScript-heavy visualizations that require proper rendering time and external CDN resources.
metal-shader-expert
20 years Weta/Pixar experience in real-time graphics, Metal shaders, and visual effects. Expert in MSL shaders, PBR rendering, tile-based deferred rendering (TBDR), and GPU debugging. Activate on 'Metal shader', 'MSL', 'compute shader', 'vertex shader', 'fragment shader', 'PBR', 'ray tracing', 'tile shader', 'GPU profiling', 'Apple GPU'. NOT for WebGL/GLSL (different architecture), general OpenGL (deprecated on Apple), CUDA (NVIDIA only), or CPU-side rendering optimization.
memtrace
OCaml memtrace profiling for allocation hotspot analysis. Use when Claude needs to: (1) Add memtrace instrumentation to OCaml executables, (2) Run targeted benchmarks with tracing enabled, (3) Identify allocation hotspots from trace output, (4) Optimize code to reduce boxing and allocations, (5) Validate optimizations with before/after comparisons
performance-analysis-and-optimization
CPU profiling, benchmarking, and memory analysis for Rust applications. Use when code is slow, memory usage is high, or optimization is needed.
session-handoff
Preserves context across sessions and IDE switches. Activates for "save session", "handoff", "continue later", "switching IDE", "save context", "what did we do", "summarize session", "end session".
mdx-sanitizer
Comprehensive MDX content sanitizer that escapes angle brackets, generics, and other JSX-conflicting patterns to prevent build failures
vs-code-extension-patterns
Expert knowledge of VS Code Extension API patterns, TreeDataProvider implementation, and command registration
ultrathink-orchestrator
Auto-invokes ultrathink workflow for any work request (default orchestrator)
cloudflare-workflows
Build durable, long-running workflows on Cloudflare Workers with automatic retries, state persistence, and multi-step orchestration. Supports step.do, step.sleep, step.waitForEvent, and runs for hours to days. Use when: creating long-running workflows, implementing retry logic, building event-driven processes, coordinating API calls, scheduling multi-step tasks, or troubleshooting NonRetryableError, I/O context, serialization errors, or workflow execution failures. Keywords: cloudflare workflows, workflows workers, durable execution, workflow step, WorkflowEntrypoint, step.do, step.sleep, workflow retries, NonRetryableError, workflow state, wrangler workflows, workflow events, long-running tasks, step.sleepUntil, step.waitForEvent, workflow bindings
thymer-capture
Capture notes, logs, and journal entries to Thymer. Use when user says "note this", "log this", "capture this", "add to journal", "inbox this", "save this conversation", or wants to save content to their Thymer workspace.
