Send and draft professional emails with seasonal HTML formatting, authentic writing style, contact lookup via Google Contacts, security-first approach, and Google Gmail API via Ruby CLI. This skill should be used for ALL email operations (mandatory per RULES.md).
excalidraw-skill
Programmatic canvas toolkit for creating, editing, and refining Excalidraw diagrams via MCP tools with real-time canvas sync. Use when an agent needs to (1) draw or lay out diagrams on a live canvas, (2) iteratively refine diagrams using describe_scene and get_canvas_screenshot to see its own work, (3) export/import .excalidraw files or PNG/SVG images, (4) save/restore canvas snapshots, (5) convert Mermaid to Excalidraw, or (6) perform element-level CRUD, alignment, distribution, grouping, duplication, and locking. Requires a running canvas server (EXPRESS_SERVER_URL, default http://localhost:3000).
google-docs
Manage Google Docs with full document operations including reading content, inserting/appending text, find and replace, text formatting (bold, italic, underline), page breaks, document structure, and document creation. Use for document content operations, text insertion/replacement, formatting, structured document generation, and content extraction. This skill should be used for ALL Google Docs-related requests.
google-drive
Manage Google Drive files and folders with full CRUD operations via Ruby scripts. Use for file storage operations, folder organization, sharing permissions, searching across Drive, and uploading/downloading files of any type. Works seamlessly with google-sheets and google-docs skills for complete Google Workspace integration.
google-sheets
Manage Google Sheets with comprehensive spreadsheet operations including reading/writing cell values, formulas, formatting, sheet management, and batch operations. Use for spreadsheet data operations, cell ranges, formulas, formatting, batch updates, and data analysis workflows. Shares OAuth token with email, calendar, contacts, drive, and docs skills.
invoice
Generate professional invoices for clients using standardized templates with automatic invoice numbering and client management. This skill should be used when creating invoices for American Laboratory Trading, Empirico, Versa Computing, or other clients with tracked invoice histories.
labx-api
LabX Seller API integration reference for American Laboratory Trading. Use when working on LabX sync, listings, inquiries, or orders. Trigger words include "labx", "LabX", "labx sync", "labx api", "listings upload", "labx orders", "labx inquiries".
notebooklm
Manage Google NotebookLM notebooks via the nlm CLI. Create notebooks, add sources (URLs, text, files, YouTube, Google Drive), generate audio overviews/podcasts, create video overviews, study materials (flashcards, quizzes), reports, mind maps, slides, query notebooks with AI, research topics, and share notebooks. Use for ANY NotebookLM-related requests.
obsidian-file-manager
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omnifocus
Manage OmniFocus projects and tasks programmatically. This skill should be used when creating, reading, updating, or listing OmniFocus tasks and projects. Supports all OmniFocus versions through intelligent automation method detection (Omni Automation → AppleScript → SQLite read-only fallback). Use for task management workflows, project queries, task completion tracking, and OmniFocus data operations.
playwright-cli
Automates browser interactions for web testing, form filling, screenshots, and data extraction. Use when the user needs to navigate websites, interact with web pages, fill forms, take screenshots, test web applications, extract information from web pages, debug web apps, record browser sessions as video, mock or intercept API requests, manage browser cookies/localStorage, generate Playwright test code, capture execution traces, or run multiple browser sessions concurrently.
tasks
Manage Google Tasks with full CRUD operations via Ruby scripts. This skill should be used when working with Google Tasks - creating, reading, updating, deleting, and organizing tasks and task lists. Supports task completion, subtask creation, task ordering, and integration with other Google skills through shared OAuth authentication.
text-message
Send text messages via Apple Messages app with automatic contact lookup and attachment support. This skill should be used when sending SMS/iMessage to contacts. Supports name-based recipient lookup via Google Contacts integration, image/file attachments, and handles missing recipient/message prompts. CRITICAL - Messages are ALWAYS sent individually to each recipient, NEVER as group messages. REQUIRES E.164 phone format (+1XXXXXXXXXX) for reliable delivery. Integrates Arlen's writing style guide for authentic messaging.
uat-reporter
Writes UAT test results (Pass/Fail/Blocked/Skip with color formatting) to the Google Sheet 'All Test Cases' tab. Use when: (1) Recording test results after UAT execution, (2) Writing a single test result for debugging, (3) Verifying previously written results match expected values, (4) Previewing what would be written with dry-run mode. Supports batch writes per module, single-test writes, row lookup by test ID, color-coded status cells, verification readback, and dual logging.
worklog
Track billable hours for clients. This skill should be used when the user requests to log work hours, record time spent on client projects, view worklog entries, calculate total billable hours, or summarize recent work. Automatically prompts for missing information (client, hours, description) and validates client names against the invoice skill's client database.
claude-opus-4-5-migration
Migrate prompts and code from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. Use when the user wants to update their codebase, prompts, or API calls to use Opus 4.5. Handles model string updates and prompt adjustments for known Opus 4.5 behavioral differences. Does NOT migrate Haiku 4.5.
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.
Writing Hookify Rules
This skill should be used when the user asks to "create a hookify rule", "write a hook rule", "configure hookify", "add a hookify rule", or needs guidance on hookify rule syntax and patterns.
Agent Development
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
Command Development
This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.
Hook Development
This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.
MCP Integration
This skill should be used when the user asks to "add MCP server", "integrate MCP", "configure MCP in plugin", "use .mcp.json", "set up Model Context Protocol", "connect external service", mentions "${CLAUDE_PLUGIN_ROOT} with MCP", or discusses MCP server types (SSE, stdio, HTTP, WebSocket). Provides comprehensive guidance for integrating Model Context Protocol servers into Claude Code plugins for external tool and service integration.
Plugin Settings
This skill should be used when the user asks about "plugin settings", "store plugin configuration", "user-configurable plugin", ".local.md files", "plugin state files", "read YAML frontmatter", "per-project plugin settings", or wants to make plugin behavior configurable. Documents the .claude/plugin-name.local.md pattern for storing plugin-specific configuration with YAML frontmatter and markdown content.
Plugin Structure
This skill should be used when the user asks to "create a plugin", "scaffold a plugin", "understand plugin structure", "organize plugin components", "set up plugin.json", "use ${CLAUDE_PLUGIN_ROOT}", "add commands/agents/skills/hooks", "configure auto-discovery", or needs guidance on plugin directory layout, manifest configuration, component organization, file naming conventions, or Claude Code plugin architecture best practices.
Skill Development
This skill should be used when the user wants to "create a skill", "add a skill to plugin", "write a new skill", "improve skill description", "organize skill content", or needs guidance on skill structure, progressive disclosure, or skill development best practices for Claude Code plugins.
concert-discovery
Help users discover bucket list concerts and live music performances they would love to attend. Use when users ask about concerts, live music, shows, performances they should see, or bucket list musical experiences. Also use when users want recommendations for upcoming concerts based on their music taste.
SecLists Fuzzing (Curated)
Essential fuzzing payloads: SQL injection, command injection, special characters. Curated essentials for vulnerability testing.
SecLists Passwords (Curated)
Top password lists for authorized security testing: common passwords, darkweb leaks, worst passwords. Curated essentials (<10MB).
SecLists Pattern-Matching
Sensitive data patterns for security testing: API keys, credit cards, emails, SSNs, phone numbers, IPs, and more. Use for data discovery and validation.
SecLists Payloads (Curated)
Essential exploitation payloads: anti-virus test files, file name exploits, malicious files. Curated for testing.
SecLists Usernames (Curated)
Top username lists for enumeration: common usernames, default credentials, names. Curated essentials for authorized testing.
SecLists Web-Shells
Web shell samples for detection and analysis: PHP, ASP, ASPX, JSP, Python, Perl shells. Use for security research and detection system testing.
Red-Hat-brand-guidelines
Applies Red Hat's official brand colors and typography to any sort of artifact that may benefit from having Red Hat's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.
ead-kaufman-benson
Specialized skill for editing and refining EAD2002 finding aids for the Terrence Kaufman Papers at the Archive of Indigenous Languages of Latin America (AILLA), Lillas Benson Latin American Studies and Collections, University of Texas at Austin. Use when working with KaufmanEAD.xml, implementing staff feedback, validating against EAD2002 standards, or referencing institutional finding aid examples.
{{skill-name}}
{{SKILL_DESCRIPTION}}. Use when users request {{USE_CASES}}. Demonstrates the System Skill Pattern (CLI + SKILL.md + Database).
setup-claude-dev-kit
Use when setting up a new dev machine for Claude Code, onboarding to a project, or optimizing development environment - interactive installer that detects existing setup, configures shell, editor, git, templates, and quality gates with configurable enforcement
brynhild-development
Guidelines for contributing to brynhild itself - use when making changes to the brynhild codebase, running tests, or understanding project conventions
commit-helper
Create and execute git commit plans from YAML files - use when organizing changes into logical commits or when user wants help structuring their git history
skill-creator
Create effective skills for brynhild agents. Use when the user wants to create, update, or improve a skill that extends agent capabilities with specialized knowledge, workflows, or tool integrations.
debugging
Systematic approach to debugging Python code - use when user encounters errors or unexpected behavior
testing
Best practices for writing Python tests - use when creating or improving test coverage
my-skill
A standalone test skill (not part of a plugin) - use for general skill testing
multi-agent
Orchestrate autonomous agent teams to complete complex tasks. PM dynamically selects specialized agents based on task classification and enforces non-negotiable principles. Supports local and remote agents, persistent sessions, and continuous learning through skills.
api-design
REST and GraphQL API design patterns, best practices, and conventions. Use when designing APIs, discussing HTTP methods, status codes, versioning, or API documentation. Triggers on mentions of REST, API, GraphQL, endpoint, HTTP methods, OpenAPI, swagger, API versioning.
docker-k8s
Docker and Kubernetes containerization best practices. Use when writing Dockerfiles, docker-compose files, or Kubernetes manifests. Triggers on mentions of Docker, container, Dockerfile, docker-compose, Kubernetes, k8s, pods, deployments, helm.
git-workflows
Git version control workflows, branching strategies, and best practices. Use when discussing git commands, branching, merging, rebasing, or version control workflows. Triggers on mentions of git, branch, merge, rebase, commit, pull request, GitHub, GitLab, version control.
go-best-practices
Go development best practices, patterns, and conventions. Use when writing Go code, reviewing .go files, discussing goroutines, channels, error handling, or Go project structure. Triggers on mentions of Go, Golang, goroutines, channels, defer, interfaces, go mod.
memory-generator
Generate CLAUDE.md project memory files by exploring codebases. Use when user asks to "generate memory", "create CLAUDE.md", "document this project", "understand this codebase", or starts work on a new/unfamiliar repository. Triggers on new project onboarding and documentation requests.
python-best-practices
Python development best practices, patterns, and conventions. Use when writing Python code, reviewing .py files, discussing pytest, asyncio, type hints, pydantic, dataclasses, or Python project structure. Triggers on mentions of Python, pytest, mypy, ruff, black, FastAPI, Django, Flask.
rust-best-practices
Rust development best practices, patterns, and conventions. Use when writing Rust code, reviewing .rs files, discussing ownership, lifetimes, borrowing, or Cargo configuration. Triggers on mentions of Rust, Cargo, ownership, borrowing, lifetimes, traits, async Rust, tokio.
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