Claude Skills by pjt222

Perform a security audit of a codebase checking for exposed secrets, vulnerable dependencies, injection vulnerabilities, insecure configurations, and OWASP Top 10 issues. Use before publishing or deploying a project, for periodic security reviews, after adding authentication or API integration, before open-sourcing a private repository, or when preparing for a security compliance audit.

Choose 3D printing materials based on mechanical, thermal, and chemical requirements. Covers PLA, PETG, ABS, ASA, TPU, Nylon, and resin variants with property comparisons. Use when selecting material for parts with specific mechanical or thermal requirements, choosing for outdoor or chemical exposure, evaluating food-safe or biocompatible applications, balancing printability vs. performance, or troubleshooting material-related print failures.

Serialize and deserialize data across common formats including JSON, XML, YAML, Protocol Buffers, MessagePack, and Apache Arrow/Parquet. Covers format selection criteria, encoding/decoding patterns, performance trade-offs, and interoperability considerations. Use when choosing a wire format for API communication, persisting structured data to disk, exchanging data between systems written in different languages, optimizing transfer size or parsing speed, or migrating from one serialization for...

Configure automated machine learning pipelines using Optuna or Ray Tune for hyperparameter optimization. Implement efficient search strategies (Hyperband, ASHA), define search spaces, and set up early stopping to find optimal model configurations with minimal manual tuning. Use when starting a new ML project and needing to quickly find good configurations, retraining with new data and re-optimizing hyperparameters, comparing multiple algorithms, or when the team lacks deep expertise in specif...

Configure general-purpose Docker Compose stacks for common application patterns. Covers web app + database + cache + worker services, named volumes, networks, health checks, depends_on, environment management, and profiles. Use when running a web app with a database or cache, setting up a development environment with multiple services, orchestrating background workers alongside an API, or creating reproducible multi-service environments across teams.

Configure container image registries including GitHub Container Registry (ghcr.io), Docker Hub, and Harbor with automated image scanning, tagging strategies, retention policies, and CI/CD integration for secure image distribution. Use when setting up a private container registry, migrating from Docker Hub to self-hosted registries, implementing vulnerability scanning in CI/CD pipelines, managing multi-architecture images, enforcing image signing, or configuring automatic cleanup and retention...

Configure Docker Compose for multi-container R development environments. Covers service definitions, volume mounts, networking, environment variables, and development vs production configurations. Use when running R alongside other services (databases, APIs), setting up a reproducible R development environment, orchestrating an R-based MCP server container, or managing environment variables and volume mounts for R projects.

Configure GitHub Actions CI/CD for R packages including R CMD check on multiple platforms, test coverage reporting, and pkgdown site deployment. Uses r-lib/actions for standard workflows. Use when setting up CI/CD for a new R package, adding multi-platform testing to an existing package, configuring automated pkgdown site deployment, or adding code coverage reporting to a repository.

Set up an R project structure compliant with GxP regulations (21 CFR Part 11, EU Annex 11). Covers validated environments, qualification documentation, change control, and electronic records requirements. Use when starting an R analysis project in a regulated environment (pharma, biotech, medical devices), setting up R for clinical trial analysis, creating a validated computing environment for regulatory submissions, or implementing 21 CFR Part 11 or EU Annex 11 requirements.

Set up a local Kubernetes development environment using kind, k3d, or minikube for fast inner-loop development. Covers cluster creation, ingress configuration, local registry setup, and integration with development tools like Skaffold and Tilt for automatic rebuild and redeploy workflows. Use when needing a local Kubernetes environment for development, testing manifests or Helm charts before production deployment, wanting fast automatic rebuild-and-redeploy cycles, or learning Kubernetes with...

Configure Prometheus for time-series metrics collection, including scrape configurations, service discovery, recording rules, and federation patterns for multi-cluster deployments. Use when setting up centralized metrics collection for microservices, implementing time-series monitoring for application and infrastructure, establishing a foundation for SLO/SLI tracking and alerting, or migrating from legacy monitoring solutions to a modern observability stack.

Set up GitHub Actions CI/CD to automatically regenerate putior workflow diagrams on push. Covers workflow YAML creation, R script for diagram generation with sentinel markers, auto-commit of updated diagrams, and README sentinel integration for in-place diagram updates. Use when workflow diagrams should always reflect the current state of the code, when multiple contributors may change workflow-affecting code, or when replacing manual diagram regeneration with an automated CI/CD pipeline.

Deploy and configure a service mesh (Istio or Linkerd) to enable secure service-to-service communication, traffic management, observability, and policy enforcement in Kubernetes clusters. Covers installation, mTLS configuration, traffic routing, circuit breaking, and integration with monitoring tools. Use when microservices need encrypted service-to-service communication, fine-grained traffic control for canary or A/B deployments, observability across all service interactions without applicat...

Configure Tailwind CSS with TypeScript in a Next.js or React project. Covers installation, configuration, custom theme extensions, component patterns, and type-safe styling utilities. Use when adding Tailwind CSS to an existing TypeScript project, customizing the Tailwind theme for a project's design system, setting up type-safe component styling patterns, or configuring Tailwind plugins and extensions.

Configure external uptime monitoring using Blackbox Exporter and Prometheus. Implement SSL certificate monitoring, HTTP endpoint health checks, and status pages for customer-facing visibility. Use when monitoring customer-facing endpoints such as APIs and websites, tracking SSL certificate expiration, validating service availability from multiple regions, creating public status pages, or meeting SLA requirements for uptime reporting.

Set up a WSL2 development environment on Windows including shell configuration, essential tools, Git, SSH keys, Node.js, Python, and cross-platform path management. Use when setting up a new Windows machine for development, configuring WSL2 for the first time, adding development tools to an existing WSL installation, or setting up cross-platform workflows that combine WSL and Windows tools.

Sharpen and maintain knives using whetstones, field stones, and improvised abrasives. Covers blade anatomy, bevel assessment, whetstone technique (coarse to fine progression), stropping, sharpness testing, field sharpening methods, and ongoing edge maintenance. Use when a knife fails the fingernail test, when cutting tasks require excessive pressure, before a trip where a sharp blade is essential, after heavy use, or when a blade has visible nicks or a rolled edge. Applicable to bushcraft bla...

Implement cuttlefish-inspired adaptive interfaces — polymorphic APIs, context-aware behavior, feature flags, and attack surface reduction. Covers environmental assessment, chromatophore mapping, dynamic interface generation, behavioral polymorphism, and pattern disruption for systems that must present different faces to different observers. Use when a system must present different interfaces to different consumers, when reducing attack surface by exposing only what each observer needs, when i...

Radiant authenticity — channeling genuine engagement to illuminate problems and dissolve opposition through clarity rather than force. Maps to AI reasoning: bringing full presence, genuine investment, and luminous clarity to every response, letting quality of engagement resolve what argument cannot. Use when a task feels adversarial, when communication has become defensive or performative, before a creative or high-stakes deliverable where presence directly affects output quality, or when opp...

Destruction and dissolution — controlled dismantling of stale patterns, context purging, assumption clearing, and dead-code elimination. Maps Shiva's transformative destruction to AI reasoning: identifying what must end so something better can begin, dissolving attachment to outdated approaches, and creating space through intentional release. Use when context has accumulated stale assumptions, when a failed approach needs to be discarded rather than patched, when dead code or zombie tasks are...

Design and simulate a minimal CPU from scratch: define an instruction set architecture (ISA), build the datapath (ALU, register file, program counter, memory interface), design the control unit (hardwired or microprogrammed), implement the fetch-decode-execute cycle, and verify by tracing a small program clock cycle by clock cycle. The capstone "computer inside a computer" exercise that composes combinational and sequential building blocks into a complete processor.

Simulate stochastic processes (Markov chains, random walks, SDEs, MCMC) with convergence diagnostics, variance reduction, and visualization. Use when generating sample paths for estimation, prediction, or visualization; when analytical solutions are intractable; running Monte Carlo estimation needing convergence guarantees; validating analytical results against empirical simulation; or sampling from complex posteriors via MCMC.

Solve problems involving changing magnetic flux using Faraday's law, Lenz's law, motional EMF, mutual and self-inductance, and RL circuit transients. Use when computing induced EMF from time-varying B-fields or moving conductors, determining current direction via Lenz's law, analyzing inductance and energy storage in magnetic fields, or solving RL circuit differential equations for switching transients.

Solve modular arithmetic problems including congruences, systems via the Chinese Remainder Theorem, modular inverses, and Euler's theorem applications. Covers both manual and computational approaches. Use when solving linear congruences, computing modular inverses, evaluating large modular exponentiations, working with simultaneous congruences (CRT), or operating in cyclic groups and discrete logarithm contexts.

Solve trigonometric equations and triangle problems systematically using identities, law of sines/cosines, inverse functions, and unit circle analysis. Covers equation solving, triangle resolution, identity verification, and applied trigonometric modeling. Use when solving trigonometric equations for unknown angles, resolving triangles from partial information (SSS, SAS, ASA), verifying identities, or applying trigonometry to real-world problems in surveying, physics, or engineering.

Make every measured number displayed in a generated artifact resolve from source files at build time, so stale numbers fail the build instead of rendering silently. Displayed figures become {metric.key} placeholders; a single extractor reads the real measurement artifacts (results JSON, run logs, ledgers) and emits a stats.json of value/source/as-of entries; the renderer substitutes at build and hard-fails on any missing key. Covers the single-writer discipline, pinning closed measurements wi...

Study the twenty-two Hebrew letters as mystical symbols. Covers letter forms, numerical values, elemental/planetary/zodiacal correspondences, Sefer Yetzirah attributions, and contemplative letter meditation techniques. Use when studying a specific letter's mystical dimensions beyond its linguistic function, learning the Sefer Yetzirah classification of mothers, doubles, and simples, needing correspondences for a letter's element, planet, or zodiac sign, practicing Hebrew letter visualization ...

Complete procedure for submitting an R package to CRAN, including pre-submission checks (local, win-builder, R-hub), cran-comments.md preparation, URL and spell checking, and the submission itself. Covers first submissions and updates. Use when a package is ready for initial CRAN release, when submitting an updated version of an existing CRAN package, or when re-submitting after receiving CRAN reviewer feedback.

Design and execute insect population surveys covering survey design, sampling methods, field execution, specimen identification, diversity index calculation including Shannon-Wiener and Simpson indices, statistical analysis, and reporting. Covers defining survey objectives, selecting study sites, determining sampling intensity and replication, choosing sampling methods appropriate to target taxa, standardizing collection effort, recording environmental covariates, identifying specimens to the...

Survey and synthesize theoretical literature on a specific topic, identifying seminal papers, key results, open problems, and cross-domain connections. Use when starting research on an unfamiliar theoretical topic, writing a literature review for a paper or thesis, identifying open problems and research gaps, finding cross-domain connections, or evaluating the novelty of a proposed theoretical contribution against existing work.

Bulk-extract every candidate flag from a binary namespace, build an extraction inventory with occurrence counts and call-type tags, cross- reference against a documented set, and track completeness across probe campaigns until the undocumented remainder reaches zero. Covers namespace prefix harvesting, gate-vs-telemetry disambiguation at the call-site level, completeness metrics, DEFAULT-TRUE population reporting, and a final completion confirmation scan. Use upstream of probe-feature-flag- s...

Practice tai chi chuan as a martial art and internal cultivation system. Covers standing meditation (zhan zhuang), silk reeling energy exercises, Yang-style 24-movement form, martial application of postures, push hands (tui shou) partner drills, breath and qi integration, and building a daily practice. Use when beginning or deepening a tai chi practice for health or martial skill, developing whole-body coordination and relaxed structural alignment, complementing a meditation practice with mov...

Guide a person in becoming a better teacher and explainer. AI coaches content structuring, audience calibration, explanation clarity, Socratic questioning technique, feedback interpretation, and reflective practice for technical presentations, documentation, and mentoring. Use when a person needs to present technical content and wants preparation coaching, wants to write better documentation or tutorials, struggles to explain concepts across expertise levels, is mentoring a colleague, or is p...

AI knowledge transfer calibrated to learner level and needs. Models the learner's mental state, scaffolds from known to unknown using Vygotsky's Zone of Proximal Development, employs Socratic questioning to verify understanding, and adapts explanations based on feedback signals. Use when a user asks "how does X work?" and needs graduated explanation, when their questions reveal a conceptual gap, when previous explanations have not landed, or when teaching a concept that depends on prerequisit...

Test A2A interoperability between agents by validating Agent Card conformance, exercising all task lifecycle states, and verifying streaming and error handling. Use when verifying a new A2A server implementation before deployment, validating interoperability between two or more A2A agents, running conformance tests in CI/CD for A2A services, debugging failures in multi-agent A2A workflows, or certifying that an agent meets A2A protocol requirements for a registry.

Write integration tests for a Node.js CLI application using the built-in node:test module. Covers the exec helper pattern, output assertions, filesystem state verification, cleanup hooks, JSON output parsing, error case testing, and state restoration after destructive tests. Use when adding tests to an existing CLI, testing a new command, verifying adapter behavior across frameworks, or setting up CI for a CLI tool.

Test Shiny applications using shinytest2 for end-to-end browser tests and testServer() for unit-testing module server logic. Covers snapshot testing, CI integration, and mocking external services. Use when adding tests to an existing Shiny application, setting up a testing strategy for a new Shiny project, writing regression tests before refactoring Shiny code, or integrating Shiny app tests into CI/CD pipelines.

Execute a test scenario against a team, observing coordination pattern behaviors, evaluating acceptance criteria, and generating a structured RESULT.md. Use when validating that a team's coordination pattern produces the expected behaviors during a realistic task, comparing coordination patterns on equivalent workloads, or establishing baseline performance for a team composition.

Organize project files into conventional directories, update stale READMEs, clean configuration drift, and archive deprecated items without changing code logic. Use when files are scattered without clear organization, READMEs are outdated or contain broken examples, configuration files have multiplied across dev/staging/prod, deprecated files remain in the project root, or naming conventions are inconsistent across directories.

Set up MLflow tracking server for experiment management, configure autologging for popular ML frameworks, compare runs with metrics and visualizations, and manage artifacts in remote storage backends for reproducible machine learning workflows. Use when starting a new ML project that requires experiment tracking, migrating from manual logs to automated tracking, comparing multiple training runs systematically, or building reproducible ML workflows with full lineage tracking.

Translate agent-almanac content (skills, agents, teams, guides) into a target locale while preserving code blocks, IDs, and technical structure. Covers scaffolding, frontmatter setup, prose translation, code preservation, and freshness tracking. Use when localizing content for a new language, updating stale translations after source changes, or batch-translating a domain.

Transform a single function, module, or data structure from one form to another while preserving its essential behavior. Lighter-weight than the full athanor cycle, suitable for targeted conversions where the input and output forms are well-understood. Use when converting a function between languages, shifting a module between paradigms, migrating an API consumer to a new version, converting data formats, or replacing a dependency — when the transformation scope is a single function, class, o...

Diagnose and fix MCP server connection issues between Claude Code, Claude Desktop, and MCP servers. Covers Windows argument parsing, authentication failures, transport issues, and platform-specific debugging. Use when Claude Code or Claude Desktop fails to connect to an MCP server, when MCP tools don't appear in sessions, on "cannot attach the server" errors, when a working connection has stopped, or when setting up MCP on a new machine.

Diagnose and fix common 3D printing failures through systematic symptom analysis. Covers adhesion, stringing, layer shifts, warping, and under/over-extrusion issues. Use when a print fails during the first layer or partway through, finished prints have quality defects (stringing, blobs, gaps), dimensional accuracy issues occur (warping, elephant foot), layer adhesion fails, or new material or hardware changes are causing inconsistent results.

Systematically diagnose and resolve chromatographic separation problems: document symptoms, identify root causes for peak shape and retention anomalies, evaluate matrix effects, and implement targeted fixes using a one-variable-at-a-time approach for GC and HPLC systems.

Launch all available agents in parallel waves for open-ended hypothesis generation on problems where the correct domain is unknown. Use when facing a cross-domain problem with no clear starting point, when single-agent approaches have stalled, or when diverse perspectives are more valuable than deep expertise. Produces a ranked hypothesis set with convergence analysis and adversarial refinement.

Update the content of an existing SKILL.md to improve accuracy, completeness, and clarity. Covers version bumping, procedure refinement, pitfall expansion, and related skills synchronization. Use when a skill's procedures reference outdated tools or APIs, the Common Pitfalls section is thin, Related Skills has broken cross-references, or after receiving feedback that a skill's procedures are unclear or incomplete.

Interact with GraphQL APIs from the command line — discover schemas via introspection, construct queries and mutations, execute them with gh api graphql or curl, parse responses with jq, and chain operations by piping IDs between calls. Use when automating GitHub Discussions, Issues, or Projects via GraphQL, integrating with any GraphQL endpoint from scripts, or building CLI workflows that need structured API data.

Validate a chromatographic analytical method per ICH Q2(R2) guidelines: define the validation scope by method category, establish specificity through forced degradation, determine linearity and range, assess accuracy and precision, and establish detection limits and robustness for regulatory submission.

Parse and validate PILES (Puzzle Input Line Entry System) notation for specifying piece fusion groups in jigsawR. Covers syntax validation, parsing into group lists, plain-language explanation, adjacency verification against puzzle results, and round-trip serialization. Use when validating user-supplied PILES strings before passing to generate_puzzle(), debugging fusion group issues, explaining the notation to users, or testing round-trip parse/serialize fidelity.