foundations-causal-inference
Causal-inference primitives: DAGs, IV, RDD, DiD, synthetic control, propensity, CATE, interference. Use when attributing confounded impact or rollout and LLM-eval confounding.
foundations-consumer-neuroscience
Consumer-neuroscience primitives for attention, arousal, bonding, narrative, memory, and reward. Use when shaping ethical UX, neuro study design, or DMCC/AI Act gates.
foundations-control-theory
Control-theory primitives for PID, MPC, Kalman, stability, anti-windup, dead-time, breakers, and limits. Use when tuning autoscaling, retries, or agent loops.
foundations-cybernetics-vsm
Applies Beer's VSM and Ashby's Law to diagnose org or agent-system viability. Use when a team or agent hierarchy has coordination, escalation, or requisite-variety problems.
foundations-decision-theory
Decision-theory primitives for uncertain choices, utility, Bayesian decisions, regret, value of information, MCDA, options, and bandits. Use when choosing under uncertainty.
foundations-distributed-systems
Distributed-systems primitives for CAP/PACELC, FLP, Paxos, Raft, clocks, CRDTs, leases, quorums, and broadcast protocols. Use when designing coordination.
foundations-game-theory
Game-theory primitives for strategic decision systems, auctions, mechanism design, incentives, attribution, negotiation, debate, and trust. Use when modeling strategic play.
foundations-grounding-communication
Grounding-theory primitives for human-AI and agent handoffs, common ground, acceptance evidence, repair, and ambiguity. Use when coordinating meaning.
foundations-information-theory
Information-theory primitives for AI systems, entropy, mutual information, KL, compression, channel limits, MDL, bottlenecks, and signal quality. Use when quantifying information.
foundations-network-science
Network-science primitives for graph systems, centrality, PageRank, communities, contagion, link prediction, and temporal networks. Use when analyzing graph structure.
foundations-queueing-theory
Applies queueing theory (Little's Law, M/M/c, Erlang, Kingman, USL) to capacity and latency decisions. Use when load causes non-linear latency growth or queue overrun risk.
foundations-reliability-theory
Reliability-theory primitives for MTBF/MTTR, availability, hazards, FMEA, redundancy, error budgets, Weibull analysis, and SLOs. Use when modeling failure.
foundations-team-theory
Team-theory primitives for cooperative multi-agent decisions, subagent allocation, communication value, Dec-POMDPs, and decentralized control. Use when organizing agents.
foundations-theory-of-constraints
Theory of Constraints primitives for focusing steps, drum-buffer-rope, throughput accounting, critical chain, and policy constraints. Use when sequencing by bottleneck.
gamedev-godot
Creates Godot games from empty project to exported build. Use when starting, building, validating, or shipping a Godot 2D/3D game or app.
gamedev-roblox
Creates Roblox experiences from empty Studio place to published world. Use when starting, building, validating, or shipping a Roblox game.
ops-cost-optimization
Audits SaaS/PaaS, cloud commitment, and AI/LLM costs across Vercel, Supabase, AWS, and Cloudflare. Use when analyzing bills, right-sizing plans, or buying commitments.
ops-incident-response
Guides incident response from detection through postmortem. Use when designing on-call runbooks, triaging production incidents, writing status updates, or improving MTTD and MTTR.
qa-persona-testing
Tests apps as an ICP persona through browser automation and reports friction, fixes, and risks. Use when running persona-based, ICP, or synthetic-user testing.
qa-security-testing
Builds automated security testing pipelines for SAST, DAST, SCA, secret scanning, and containers. Use when integrating scanners into CI or managing security regression gates.
qa-testing-accessibility
Builds accessibility testing workflows for WCAG 2.2 audits and CI gates. Use when adding axe-core or Lighthouse checks, calibrating gate policy, or planning screen-reader testing.
qa-testing-performance
Designs performance and load testing for web, API, and backend systems. Use when setting budgets, profiling bottlenecks, or adding performance regression gates.
research-arxiv-scout
Discovers and triages recent arXiv papers for AI/ML, agents, and software/QA. Use when scouting categories, arXiv IDs, or source lists.
research-git
Scans public GitHub repos for agent skills, dev practices, and code patterns. Use when enriching skills, setting team policy, or researching a build domain.
research-scout
Mines academic papers, research blogs, and curator newsletters for stealable methods and frameworks. Use when scanning research for applicable techniques across AI/ML/SWE.
software-accessibility
Implements accessibility fixes in code. Use when remediating semantic HTML, ARIA, focus, keyboard support, or screen-reader behavior.
software-ai-integration
Applies production AI integration patterns for chat, structured output, guardrails, provider routing, and AI UX. Use when adding LLM-powered features to an application.
software-android-design
Designs and audits native Android interfaces. Use when reviewing Compose layout, typography, color, motion, or adaptive patterns on a verified emulator build.
software-android-native
Guides native Android development with Kotlin, Jetpack Compose, and Views interop. Use when building, rewriting, or reviewing modern Android apps after establishing runtime truth.
software-android-runtime-debugging
Build/install/launch proof, ANR/jank/memory triage, and stale-build debugging for native Android apps. Use when runtime truth, performance, or crash root cause is in doubt.
software-baas-platforms
Chooses managed backend platforms such as Supabase, Convex, and Firebase. Use when comparing database, auth, realtime, and backend-service tradeoffs.
software-cloudflare-wrangler
Guides Cloudflare Wrangler CLI usage for Workers, bindings, deploys, local dev, and config. Use when running or reviewing wrangler commands.
software-database-design
Designs database schemas, migrations, and data models for PostgreSQL, MySQL, MongoDB, and Redis. Use when planning tables, relationships, indexes, or ORM-backed schema changes.
software-desktop
Guides cross-platform and native desktop development with Electron, Tauri, Flutter Desktop, MAUI, and platform-native frameworks. Use when choosing a stack or packaging installers.
software-devtools
Designs developer tools, SDKs, CLIs, IDE extensions, and code generators. Use when shaping DX, typed clients, code generation, or package distribution workflows.
software-email-engineering
Designs transactional email systems and send infrastructure. Use when implementing resets, receipts, deliverability controls, templates, or inbound email handling.
software-ios-ai-engine
Design local AI engines for iOS. Use when wiring Apple Foundation Models, local classifiers, extraction, summarization, grounded answers, and cloud fallbacks.
software-ios-design
Designs and audits native iOS interfaces. Use when reviewing or refining SwiftUI layout, typography, Liquid Glass, navigation, or dashboards on a freshly verified build.
software-ios-native
Guides native iOS with Swift, SwiftUI, UIKit interop, concurrency, and persistence. Use when building or reviewing iPhone/iPad apps after establishing runtime truth.
software-ios-runtime-debugging
Proves iOS build/install/launch truth and triages hangs, crashes, jank, memory kills, and stale builds. Use when simulator, bundle, or runtime performance state is in doubt.
software-paas-hosting
Chooses PaaS compute hosting for apps, agents, bots, APIs, and workers. Use when picking Vercel, Fly.io, Railway, Render, Cloudflare, Deno, or container PaaS.
software-performance
Systematic profiling, load testing, performance budgets, and regression prevention. Use when diagnosing slow services, benchmarking systems, or preventing regressions.
software-realtime
Designs real-time and collaborative systems. Use when building chat, live dashboards, collaborative editing, notifications, WebSockets, SSE, or CRDT workflows.
software-search
Designs application search systems. Use when choosing engines, indexing, relevance tuning, facets, autocomplete, or search analytics.
software-solution-architecture
Designs cross-system target states and transition plans from business workflows and system boundaries. Use when comparing end-to-end solution options or phased migrations.
software-workflow-automation
Designs workflow automation with n8n, Langflow, Temporal, and Trigger.dev. Use when choosing automation platforms, durable runtimes, or custom code.
template-skill
Replace with description of the skill and when Claude should use it.
frontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.
skill-creator
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
log-analyzer
Parse and analyze application logs to identify errors, patterns, and insights.
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