Skills（SKILL.md）は、AIエージェント（Claude Code、Cursor、Codexなど）に特定の能力を追加するための設定ファイルです。
詳しく見る →Implement feature steps using git worktrees, build and test adaptively, update implementation plan, and generate test plans. This skill should be used when ready to implement one or more steps from an implementation plan, automatically adapting to any framework, language, or project structure.
Develop features in isolated git worktrees with autonomous testing and iteration. Use when the user asks to develop a feature in a separate worktree, wants isolated feature development, or mentions working without affecting the current directory.
Create feature spec files from project docs, commit and push to main, and create matching feature branches from main.
Creates focused feature specifications with user stories, acceptance criteria, and edge cases. Lighter than PRD, focuses on single feature implementation. Use when specifying individual features after PRD approval or for standalone feature work.
Guide iterative specification and CDC (Cahier Des Charges) creation through deep questioning, context analysis, and proactive proposals. Use this skill BEFORE feature-research to clarify requirements, identify prerequisites, define scope, and document complete specifications. Triggers when starting a new feature, task, bug fix, or refactoring and requirements need clarification.
Validate features_backlog.md for an idea against concept_summary.md and epics_backlog.md (writes report to ideas/<IDEA_ID>/runs and updates ideas/<IDEA_ID>/latest; optional patch if allowed)
Fetches official documentation for external libraries and frameworks (React, Next.js, Prisma, FastAPI, Express, Tailwind, MongoDB, etc.) with 60-90% token savings via content-type filtering. Use this skill when implementing features using library APIs, debugging library-specific errors, troubleshooting configuration issues, installing or setting up frameworks, integrating third-party packages, upgrading between library versions, or looking up correct API patterns and best practices. Triggers automatically during coding work - fetch docs before writing library code to get correct patterns, not after guessing wrong.
Build or modify the Rust↔Python FFI using PyO3+maturin. Use for binding builds, smoke tests, and boundary validation workflow.
Complete CI/CD video processing system. PROACTIVELY activate for: (1) GitHub Actions FFmpeg setup, (2) GitLab CI video pipelines, (3) Jenkins declarative pipelines, (4) FFmpeg caching strategies, (5) Windows runner workarounds, (6) GPU-enabled self-hosted runners, (7) Matrix builds for multi-format, (8) Artifact upload/download, (9) Video validation workflows, (10) BtbN/FFmpeg-Builds integration. Provides: YAML workflow examples, Docker container patterns, caching configuration, platform-specific solutions, debugging guides. Ensures: Fast, reliable video processing in CI/CD pipelines.
Complete GPU-accelerated encoding/decoding system for FFmpeg 7.1 LTS and 8.0.1 (latest stable, released 2025-11-20). PROACTIVELY activate for: (1) NVIDIA NVENC/NVDEC encoding, (2) Intel Quick Sync Video (QSV), (3) AMD AMF encoding, (4) Apple VideoToolbox, (5) Linux VAAPI setup, (6) Vulkan Video 8.0 (FFv1, AV1, VP9, ProRes RAW), (7) VVC/H.266 hardware decoding (VAAPI/QSV), (8) GPU pipeline optimization with pad_cuda, (9) Docker GPU containers, (10) Performance benchmarking. Provides: Platform-specific commands, preset comparisons, quality tuning, full GPU pipeline examples, Vulkan compute codecs, VVC decoding, troubleshooting guides. Ensures: Maximum encoding speed with optimal quality using GPU acceleration.
Complete live streaming and protocol system for FFmpeg 7.1 LTS and 8.0.1 (latest stable, released 2025-11-20). PROACTIVELY activate for: (1) RTMP streaming to Twitch/YouTube/Facebook, (2) HLS output and adaptive bitrate (ABR), (3) DASH streaming setup, (4) Low-latency streaming (LL-HLS, LL-DASH), (5) SRT protocol configuration, (6) WebRTC/WHIP sub-second latency (FFmpeg 8.0+), (7) Protocol conversion (RTMP to HLS), (8) Multi-destination streaming, (9) nginx-rtmp integration, (10) Docker streaming services. Provides: Platform-specific stream commands, ABR ladder examples, encryption setup, latency optimization, WHIP authentication, production patterns. Ensures: Reliable live streaming with optimal quality and latency.
Expert guidance for ffuf web fuzzing during penetration testing, including authenticated fuzzing with raw requests, auto-calibration, and result analysis
Testing toolkit for the FHIR Writing Clinical Notes specification at connectathons. Use when the user needs to test FHIR DocumentReference write operations, validate conformance with the Writing Clinical Notes spec, or participate in a FHIR connectathon for clinical notes. Includes templates, OAuth helpers, and automated test scenarios for both provider-authored and patient-asserted notes.
Comprehensive FHIR (Fast Healthcare Interoperability Resources) software development assistant. Use when working with FHIR APIs, implementations, or healthcare data exchange. Supports FHIR R4, R4B, R5, Implementation Guides (IGs), validation, terminology, and SMART on FHIR. Ideal for building FHIR servers, clients, validators, or healthcare applications that need to process FHIR resources.
Use when writing or editing novels, short stories, or any fiction manuscript. Trigger on: 'write fiction', 'edit my novel', 'developmental edit', 'line edit', 'character voice', 'plot hole', 'brainstorm', or fiction writing tasks.
Extract design assets and metadata from Figma using the Figma REST API.
Extract and analyze Figma designs to create structured design specifications. Use this skill when you need to analyze Figma nodes, extract design properties (layout, spacing, typography), classify components using Atomic Design principles, and generate design specification documents that can be used for implementation.
figma-design-extraction
Generate Figma mockups from wrangler specifications with hierarchical file structure and approval tracking
Extract design specifications from Figma designs using the Figma MCP server. Used during planning workflows to gather detailed design context for implementation.
Analyzes Figma designs and generates implementation-ready PRDs with detailed visual specifications. Use when user provides Figma link or uploads design screenshots. Requires Figma MCP server connection.
Extract design specifications from Figma files using MCP integration.
Pixel-perfect implementation of Figma designs. When Claude needs to translate Figma designs into code with precise attention to autolayout, variables, and styles.
Convert Figma designs into Flutter code through an automated workflow that extracts design metadata, generates reference code, exports assets, implements the UI, and iteratively tests until the implem
How to use the file-factory CLI to create new React components, hooks, context providers, Next.js pages along with associated tests and storybook stories. ALWAYS use this tool instead of manually creating new components/hooks/contexts/pages to ensure consistent file structure and conventions.
File Organization Standards Skill
[PROJECT] file and directory structure conventions and enforcement
Organizes or restructures files and directories according to a specified hierarchy or categorization scheme. Analyzes existing structures, creates new directory trees, intelligently moves files based on content and naming patterns, and verifies the final organization.
Ingest SEC EDGAR filings (10-K, 10-Q, 8-K) via official API with source tracking and pgvector storage
Filter and search event datasets (logs) using OPAL. Use when you need to find specific log events by text search, regex patterns, or field values. Covers contains(), tilda operator ~, field comparisons, boolean logic, and limit for sampling results. Does NOT cover aggregation (see aggregating-event-datasets skill).
Analyze financial data, build models, evaluate investments, and provide data-driven financial recommendations
Guidance for processing, classifying, and extracting data from financial documents (invoices, receipts, statements). This skill should be used when tasks involve OCR extraction, document classification, data validation from financial PDFs/images, or batch processing of financial documents. Covers safe file operations, incremental testing, and data extraction verification.
Use when fine-tuning LLMs, training custom models, or optimizing model performance for specific tasks. Invoke for parameter-efficient methods, dataset preparation, or model adaptation.
Provides expert guidance on building financial technology systems with proper accounting principles, regulatory compliance, and high-precision calculations. Specializes in ledger design, payment proce
Evidence-based diagnostic and treatment guidance for Feline Infectious Peritonitis (FIP). Use this skill when working with veterinary cases involving FIP or potential FIP, including (1) Differential diagnosis when clinical signs suggest FIP, (2) Interpreting diagnostic test results and determining next steps, (3) Treatment planning with GS-441524 or other antivirals, (4) Monitoring treatment response and adjusting protocols, (5) Managing relapses or treatment failures, (6) Client communication about prognosis and treatment options, (7) Prevention strategies and multi-cat household management, (8) Cattery breeding decisions after FIP cases, (9) Any questions about FIP diagnosis, treatment, prevention, or management. Also use when encountering mentions of FCoV, feline coronavirus, effusive/non-effusive disease forms, GS-441524, or related veterinary scenarios.
Scans Android APKs for Firebase security misconfigurations including open databases, storage buckets, authentication issues, and exposed cloud functions. Use when analyzing APK files for Firebase vulnerabilities, performing mobile app security audits, or testing Firebase endpoint security. For authorized security research only.
This skill system guides Firebase development using proven patterns from production projects. It routes to specialized sub-skills based on detected intent.
firebase-firestore
Expert firmware analyst specializing in embedded systems, IoT
Simulate a first-time UCV-CLI user experience. Tests if documentation enables new users to use the interactive variant management dashboard. Generates UX audit reports with friction points.
Simulate a first-time user experience by following only the documentation. Generates UX audit reports with friction points and recommendations. Use to test documentation quality and create improvement loops.
FirstSpirit CMS template development using fs-cli. Helps set up fs-cli environment, export templates from FirstSpirit server, modify templates with Claude Code, and import changes back to server. Use when working with FirstSpirit templates, CMS development, or when user mentions fs-cli, FirstSpirit, or template synchronization.
This skill provides comprehensive knowledge for templating in the FirstSpirit CMS, specifically focused on SiteArchitect development. This skill should be used when working with FirstSpirit templates including page templates, section templates, format templates, link templates, input components, template syntax, system objects, rules, and workflows. The skill is organized as structured reference documentation with topics covering architecture, template types, syntax, and development practices.
Architecture test guidance for .NET using NetArchTest and ArchUnitNET. Use when enforcing architectural boundaries, testing module dependencies, validating layer constraints, or creating performance fitness functions. Includes code generation templates.
Systematically fixes all failing tests in a project by running test commands repeatedly until 100% pass with zero warnings. Use when tests are failing, validation is not passing, or when asked to fix test suites. Works with any testing framework (Jest, Pytest, Go test, etc.) and ensures complete test compliance without skipping or modifying tests.
Guidance for identifying and fixing security vulnerabilities in code. This skill should be used when asked to fix security issues, address CVEs or CWEs, remediate vulnerabilities like injection attacks (SQL, command, CRLF, XSS), or when working with failing security-related tests.
Use when encountering a bug - complete workflow from discovery through debugging, bd issue, test-driven fix, verification, and closure