Industrial production of iron and steel from ore to finished product — blast furnace, Bessemer converter, open-hearth, basic oxygen, electric arc, continuous casting, rolling, and secondary metallurgy. Covers the chemistry of decarburization, dephosphorization, and desulfurization, the metallurgy of plain carbon steels, the evolution from puddling and rolling to BOF and EAF, and the process-structure-property chain that makes mild steel the default structural material of the industrial era.

FFmpeg media processing — video/audio conversion, trimming, encoding, filters, streaming. CLI and ffmpeg.wasm patterns.

Somatic movement and whole-body retraining as Joseph Pilates designed it in the Contrology method and as Moshé Feldenkrais designed it in Awareness Through Movement and Functional Integration, with enough cross-reference to the broader somatics landscape (Alexander Technique, Hanna Somatics, Body-Mind Centering) that an agent can place a user into the right method. Covers the Pilates reformer and mat system, the six Pilates principles, the Feldenkrais ATM lesson structure, the nervous-system learning frame that distinguishes somatics from exercise, and the safety posture that matters for rehab populations. Use for queries about core training, rehab-adjacent movement, chronic pain patterns, and learning-based movement re-education.

Yoga practice with an emphasis on alignment, props, and staged progression as the Iyengar lineage teaches it, alongside enough context about the broader lineage landscape (Krishnamacharya's three students, modern Hatha, Ashtanga vinyasa, restorative, Yin, and chair yoga) that a routing agent can place a user correctly before giving instruction. Covers asana families, alignment heuristics, prop use, sequencing, and the non-negotiable injury-prevention rules. Use for any query about yoga postures, home practice design, teacher-training-level questions, or whether a given pose is safe for a given body.

Musical form and structural analysis covering binary, ternary, rondo, sonata, theme-and-variations, and popular song forms. Covers formal archetypes (AB, ABA, ABACA, sonata-allegro), 12-bar blues, arch form, minimalist process forms, strophic and through-composed designs, and formal analysis methodology for both score study and listening. Use when determining the structural plan of a piece, analyzing sectional relationships, or understanding how form shapes musical narrative.

The discipline of keeping a field notebook — words, pictures, numbers, metadata, and questions captured during sustained outdoor observation. Covers the Laws notebook method, the sit-spot practice, phenology recording, sketch-first-name-later discipline, and the long-term research value of accumulated journals. Use when the task is to teach or structure ongoing field observation rather than answer a one-shot identification.

The pedagogy of feeding — how to talk about food with children, what the Division of Responsibility model says, age-appropriate autonomy in eating, how to handle picky eating without creating disordered eating, and how to teach nutrition concepts to learners at different levels without either moralizing or oversimplifying. Use when a question is about raising, teaching, or advising a child or learner on eating, or when planning curriculum or parent guidance.

Dietary claims that sound plausible at the food level sometimes collapse when examined at the metabolic level, and dietary claims that sound implausible at the food level sometimes turn out to have so

Runtime HAL for multi-runtime agent orchestration. Detects active AI assistant (Claude Code, Codex, Gemini, Cursor) and exposes uniform interface for startup injection, GUPP enforcement, and communication selection.

Provides compliance, governance, and supply chain security guidance for cloud-native systems. Covers OPA Rego policies, Kyverno cluster policies, SBOM generation, SLSA provenance, audit trail design, and regulatory framework mapping. Use when user mentions 'compliance', 'governance', 'OPA', 'kyverno', 'SBOM', 'SLSA', 'audit', 'policy-as-code', 'SOC2', 'HIPAA', 'PCI-DSS', 'artifact signing'.

Provides Docker and containerization best practices including multi-stage builds, security hardening, and compose patterns. Use when writing Dockerfiles, optimizing images, setting up containers, or when user mentions 'Docker', 'container', 'Dockerfile', 'docker-compose', 'image'.

Critical thinking as philosophical practice. Covers the Socratic method (elenchus), argument identification and reconstruction, premise evaluation, fallacy detection (formal and informal), charitable interpretation (principle of charity), dialectical thinking (thesis-antithesis-synthesis), thought experiment methodology, philosophical writing and reading, intellectual virtues (humility, courage, empathy, honesty), Dewey's reflective thinking, and critical thinking applied to everyday reasoning. Use when analyzing arguments, practicing Socratic questioning, evaluating reasoning, or developing philosophical method.

Theory of knowledge and justification across the Western philosophical tradition. Covers the tripartite analysis (justified true belief), Gettier problems, foundationalism vs. coherentism vs. reliabilism, skepticism (Cartesian and external world), rationalism vs. empiricism, Kant's synthesis, social and feminist epistemology, pragmatist epistemology, naturalized epistemology, and philosophy of science (Popper, Kuhn, Lakatos, Feyerabend). Use when analyzing claims about knowledge, evidence, certainty, justification, or scientific method.

Ethical theory and moral reasoning across the major philosophical traditions. Covers normative ethics (consequentialism, deontology, virtue ethics, care ethics, existentialist ethics), metaethics (moral realism, anti-realism, emotivism, error theory), and applied ethics (bioethics, environmental ethics, AI ethics, just war theory). Includes a moral dilemma analysis framework with worked examples applying multiple frameworks to the same case.

Metaphysical inquiry into the fundamental nature of reality. Covers ontology (what exists), substance and properties, universals vs. particulars, free will and determinism, personal identity, philosophy of mind (dualism, physicalism, functionalism, the hard problem of consciousness), causation, time, possible worlds, Buddhist metaphysics (Nagarjuna's sunyata, dependent origination, two truths doctrine), and process philosophy (Whitehead). Use when exploring questions about existence, consciousness, identity, free will, or the fundamental structure of reality.

Coaching as teaching — John Wooden's Pyramid of Success, practice design, feedback quality, instructional economy, and the craft of deliberate skill development. Covers the difference between knowing the game and teaching it, Wooden's actual practice methods as documented by Gallimore and Tharp, skill progression through part-whole teaching, the four-to-one positive feedback discipline, and the habits that distinguish effective coaches from merely knowledgeable ones. Use when designing practices, improving instruction, mentoring young coaches, or framing sport leadership as an educational activity.

Inclusive physical education for gender, ability, and developmental variation. Covers the history of women in sport from Berenson's women's basketball rules forward, adapted PE for disability and chronic illness, universal design for learning in PE, gender-equitable participation, and the ethical obligations of a PE teacher to serve every learner in the room. Use when adapting lessons for disability, designing co-educational units, addressing participation gaps, or teaching the history of inclusion as part of the PE curriculum.

Group problem solving with explicit structure. Covers shared mental models, role allocation, cognitive division of labor, building on ideas (yes-and), productive disagreement, and the moves that prevent social loafing and groupthink. Use for problems that exceed individual capacity or benefit from multiple expertise areas.

Systematic comprehension of a problem before any solving attempt. Covers restating the problem, identifying knowns, unknowns, constraints, and goal, recognizing problem type (well-defined, ill-defined, optimization, decision, puzzle), and decomposing large problems into tractable sub-problems. Use at the start of any problem-solving session to avoid solving the wrong problem.

Strategies are general-purpose operators on problems. Polya called them heuristics. Simon and Newell formalized some of them as search operators in a state-space. A good solver has many strategies and

Risk is uncertainty that matters. Every project operates under uncertainty — requirements change, dependencies break, people leave, estimates miss. Risk management does not eliminate uncertainty; it m

Foundations of clinical psychology and psychopathology. Covers anxiety disorders (generalized anxiety, panic, phobias, OCD, PTSD), depressive disorders (major depression, persistent depressive disorder, bipolar), personality theories (psychodynamic, trait/Big Five, humanistic, social-cognitive), therapeutic approaches (CBT, psychodynamic, humanistic/person-centered, behavioral, pharmacological), the biopsychosocial model, DSM diagnostic framework, and the evidence base for psychological treatments. Use when analyzing psychological disorders, therapeutic approaches, personality assessment, or the intersection of biology, psychology, and social context in mental health.

Word learning strategies, vocabulary instruction, and lexical development for reading comprehension. Covers Beck's three-tier vocabulary model, context clue strategies (definition, synonym, antonym, example, inference), morphological analysis (prefixes, suffixes, roots, etymology), word consciousness and word play, academic vocabulary across disciplines, figurative language (metaphor, simile, idiom, personification, hyperbole), dictionary and reference skills, and vocabulary-comprehension connections. Use when teaching vocabulary, selecting words for instruction, analyzing word knowledge demands of a text, or building academic vocabulary.

Earth and life systems as contexts for scientific inquiry. Covers ecosystems, biodiversity, biogeochemical cycles, climate systems, geological processes, and human impacts -- not as content to memorize but as case studies for applying the scientific method, experimental design, data analysis, and field observation. Use when applying scientific inquiry skills to ecological, environmental, or biological questions.

The history and philosophy of science as a meta-discipline. Covers scientific paradigms and paradigm shifts, the nature of scientific theories versus hypotheses and laws, landmark discoveries as case studies in methodology, creativity and serendipity in science, the social and cultural context of scientific practice, and science-society relationships. Use when teaching, discussing, or evaluating the nature of science, its history, or its place in society.

Git-friendly, crash-recoverable state persistence for the Gastown orchestration chipset. Manages agent identities, work items, hooks, convoys, and merge requests as JSON files with atomic write operations.

Ethical frameworks for responsible technology creation and deployment -- consequentialism, deontology, virtue ethics, care ethics, and justice theory applied to technology decisions. Covers stakeholder analysis, impact assessment, the Collingridge dilemma, technology governance models, digital equity, environmental sustainability, labor implications, and the social construction of technology. Use when evaluating the ethics of technology decisions, designing for social impact, assessing unintended consequences, or teaching responsible technology citizenship. This is the normative complement to emerging-tech's descriptive analysis.

Comparative religion as a scholarly discipline — cross-tradition analysis of doctrines, practices, and experiences without collapsing traditions into each other or ranking them against a normative standard. Covers the history of the discipline (from Max Muller through Eliade, Smart, Smith, and the contemporary critique), typologies (theism, monism, polytheism, non-theism), the dimensions framework (doctrinal, ritual, ethical, experiential, mythic, institutional, material), and the ethics of comparison. Use when a query asks how a concept, practice, or text functions across multiple traditions.

A workshop is a designed environment for skilled work. Its organization, layout, and habits are not incidental to the craft performed in it — they are the physical substrate on which the craft depends

Poetic forms, techniques, and analysis for reading and writing poetry. Covers fixed forms (sonnet, villanelle, haiku, ghazal, sestina, pantoum), free verse and open form, prosody and meter (iambic pentameter, trochee, anapest, dactylic, spondee, scansion), sound devices (alliteration, assonance, consonance, rhyme schemes, enjambment, caesura), figurative language (metaphor, simile, metonymy, synecdoche, personification, apostrophe), imagery and the image (concrete image, objective correlative, imagism), and the line as unit of meaning (lineation, line break, visual form). Use when writing poetry, analyzing poems, or working with compression and sound.

Domain knowledge for 10 applied subjects: computer science, data science, world languages, psychology, environmental science, nutrition, economics, creative writing, logic, digital literacy. Use when generating Applied & Practical tier pack content.

Electronics Educational Pack — routes queries to 15 modules covering Ohm's law through PCB design

Safe file operation patterns. Use when performing bulk file operations or writing deployment scripts.

Use when GSD commands are failing or .planning/ artifacts look inconsistent. Run before any GSD execute-phase or verify-work attempt to catch cross-artifact mismatches early.

Excavate GSD artifact timeline to reconstruct decision chains, requirement evolution, and phase rationale.

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GSD-OS bootstrap guide — from freshly unzipped directory to fully operational development environment. Covers prerequisite detection, workspace setup, service bring-up, magic level adaptation, error recovery, and the you-can't-break-it guarantee.

Guidance for verifying documentation accuracy against running OpenStack infrastructure. Use when detecting documentation drift, validating operations procedures against live systems, or confirming that runbooks produce expected results on the deployed cloud. Implements NASA Product Verification (SP-6105 SS 5.3) applied to documentation artifacts.

Guidance for writing OpenStack operations manual procedures following NASA document standards. Use when authoring per-service procedures, maintenance workflows, or operational documentation that must be verified against running infrastructure.

Deep symmetries and unifying principles — gauge theory, Lie groups, Noether's theorem, and the Standard Model. Constructs field theories from symmetry requirements, derives conservation laws, and traces force unification. Use when working with gauge symmetry, Lie groups (U(1), SU(2), SU(3)), conservation laws via Noether's theorem, the Higgs mechanism, or Standard Model structure.

Kolla-Ansible deployment engine skill for containerized OpenStack lifecycle management. Use when bootstrapping, deploying, reconfiguring, or upgrading OpenStack environments. Covers globals.yml configuration, inventory management, container operations, rolling upgrades, password management, and troubleshooting deployment failures across all service containers. This is the meta-skill that manages the deployment lifecycle for all OpenStack services.

OpenStack Neutron software-defined networking service. Provides network abstraction for cloud instances including security groups, floating IPs, DHCP, L3 routing, ML2 plugin architecture with OVN/OVS backends, network namespaces, provider and tenant networks, VXLAN/VLAN/flat network types, and port management. Use for deploying, configuring, operating, and troubleshooting OpenStack networking.

OpenStack security operations skill for hardening, certificate management, and security posture assessment of cloud infrastructure. Covers TLS certificate lifecycle (generation, deployment, rotation, expiry monitoring), security group management (default deny, minimum required openings), RBAC policy customization (per-service policy.yaml), network segmentation (management vs tenant vs external), audit logging (Keystone CADF events), vulnerability assessment procedures, compliance auditing, intrusion detection patterns, incident response procedures (credential compromise, instance compromise), password rotation, and API rate limiting. Use when hardening OpenStack, managing certificates, auditing security posture, or responding to security incidents.

OpenStack Swift object storage service. Provides S3-compatible distributed object storage with containers, ACLs, ring architecture, eventual consistency, large object support (SLO/DLO), tempURL for unauthenticated access, object versioning, and object expiry. Use for deploying, configuring, operating, and troubleshooting OpenStack object storage.

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Maintain compatibility between openskills-runtime and language bindings (TypeScript, Python), including feature flags, build configuration, and smoke verification.

Process audio and video with clipping, conversion, analysis, captions, thumbnails, GIFs, and batch utilities. Use for practical media manipulation workflows.

Designed

Gradle build tool standards focusing on Kotlin DSL. Covers project configuration, dependency management, and custom plugin/task development with Gradle 9 LTS.