Claude Skills

Builds production-ready Keboola Python components with best practices and architectural patterns. Use when creating new extractors/writers/applications, implementing incremental loads, designing configuration schemas, adding API client separation, following self-documenting workflow patterns, or setting up components with cookiecutter templates and Ruff code quality.

Migrate Keboola Python packages from setup.py to modern uv build system with deterministic dependencies. Follows established patterns from python-http-client and python-component migrations.

Expert agent for writing and maintaining tests for Keboola Python components. Specializes in datadir tests, unit tests, and integration tests with proper mocking and assertions.

Systematic debugging approach for errors, test failures, and unexpected behavior. Use when encountering bugs, test failures, errors, or when debugging is needed. Prevents common anti-patterns like random fixes, skipping root cause analysis, and thrashing.

Detects natural language handoff requests and generates structured context summaries for seamless thread continuation. Use when user says "handoff", "new thread", "continue in fresh thread", or similar phrases.

Guide for initializing and setting up new Keboola Python components using cookiecutter template. Use when starting a new component project from scratch.

Extracts web content and performs reliable searches when standard tools fail due to access restrictions, rate limiting, or validation errors. Use when encountering 403/429/422 errors, blocked documentation sites, or silent search failures. **Direct tool execution often fails for these scenarios - search-plus agent delegation provides the most reliable results.**

Expert for developing Streamlit data apps for Keboola deployment. Activates when building, modifying, or debugging Keboola data apps, Streamlit dashboards, adding filters, creating pages, or fixing data app issues. Validates data structures using Keboola MCP before writing code, tests implementations with Playwright browser automation, and follows SQL-first architecture patterns.

Expert in Keboola configuration schemas, conditional fields (options.dependencies), UI elements, sync actions, and schema testing. Can launch schema-tester and run Playwright tests. Specialized for configSchema.json and configRowSchema.json development.

Guide for debugging with targeted log injection and runtime analysis

Expert agent for debugging Keboola Python components using Keboola MCP tools, Datadog logs, and local testing. Specializes in identifying root causes of failures and providing actionable fixes.

Create effective agent skills through guided briefing process. Use when user wants to: (1) create a new skill, (2) make a skill, (3) build a skill, (4) set up a skill, (5) initialize a skill, (6) design a skill, (7) update or modify existing skill, (8) plan skill architecture, or (9) learn about skill structure. Trigger on phrases like "create skill", "new skill", "make skill", "skill for X", "build skill", "design skill", or "help me create skill".

Analyzes and refines agent skills by identifying quality issues, prioritizing fixes (MUST/SHOULD/NICE), gathering user feedback, and implementing improvements. Checks for common problems like time estimates, oversized SKILL.md files, poor structure, redundant content, missing examples, and unclear workflows. Use when reviewing, improving, refactoring, or auditing existing skills. Triggers include "review skill", "improve skill", "refactor skill", "skill quality", "audit skill", "fix skill", "optimize skill", "analyze skill".

Implements XAML behaviors and triggers using Microsoft.Xaml.Behaviors.Wpf. Use when adding interactivity to XAML without code-behind, implementing EventToCommand patterns, or creating reusable behaviors.

Implements compile-time regex using GeneratedRegexAttribute Source Generator. Use when working with Regex patterns for better performance and AOT compatibility.

Implements IValueConverter as MarkupExtension for direct XAML usage without StaticResource. Use when creating converters to eliminate resource dictionary declarations.

Uses WPF Clipboard for copy/paste operations with text, images, and custom data formats. Use when implementing copy/paste functionality or inter-application data transfer.

Implements WPF UI virtualization for large data sets using VirtualizingStackPanel. Use when displaying 1000+ items in ItemsControl, ListView, or DataGrid to prevent memory and performance issues.