Skill.md files: teach Claude once, not every chat.

• SKILL.md

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name: llm-app-patterns
description: Architecture and integration sketches for LLM applications, with explicit retrieval, tool, privacy and verification boundaries.
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• SKILL.md

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name: mcp-builder
description: Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks.
---

• SKILL.md

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name: mcp-tool-developer
description: Build Model Context Protocol (MCP) servers and tools from scratch. Full-stack MCP development with TypeScript/Python, testing, deployment, and registry publishing.
---

• SKILL.md

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name: prompt-engineering
description: Expert guide on prompt engineering patterns, best practices, and optimization techniques. Use when user wants to improve prompts, learn prompting strategies, or debug agent behavior.
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• SKILL.md

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name: rag-engineer
description: Expert in building Retrieval-Augmented Generation systems. Masters embedding models, vector databases, chunking strategies, and retrieval optimization for LLM applications.
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• SKILL.md

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name: ab-test-setup
description: Use when designing an A/B or split test: define the hypothesis, control and variants, estimate sample size, verify tracking, and predeclare metrics and stopping rules.
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• SKILL.md

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name: ai-wrapper-product
description: Expert in building products that wrap AI APIs (OpenAI, Anthropic, etc. ) into focused tools people will pay for. Not just "ChatGPT but different" - products that solve specific problems with AI.
---

• SKILL.md

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name: analytics-product
description: Analytics de produto — PostHog, Mixpanel, eventos, funnels, cohorts, retencao, north star metric, OKRs e dashboards de produto.
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• SKILL.md

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name: hugging-face-evaluation
description: Add and manage evaluation results in Hugging Face model cards. Supports extracting eval tables from README content, importing scores from Artificial Analysis API, and running custom model evaluations with vLLM/lighteval. Works with the model-index metadata format.
---

• SKILL.md

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name: kpi-dashboard-design
description: Comprehensive patterns for designing effective Key Performance Indicator (KPI) dashboards that drive business decisions.
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• SKILL.md

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name: product-manager
description: Senior PM agent with 6 knowledge domains, 30+ frameworks, 12 templates, and 32 SaaS metrics with formulas. Pure Markdown, zero scripts.
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• SKILL.md

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name: api-design-principles
description: Master REST and GraphQL API design principles to build intuitive, scalable, and maintainable APIs that delight developers and stand the test of time.
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• SKILL.md

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name: api-documentation
description: API documentation workflow for generating OpenAPI specs, creating developer guides, and maintaining comprehensive API documentation.
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• SKILL.md

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name: api-endpoint-builder
description: Builds production-ready REST API endpoints with validation, error handling, authentication, and documentation. Follows best practices for security and scalability.
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• SKILL.md

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name: api-patterns
description: API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination.
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• SKILL.md

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name: api-security-best-practices
description: Implement secure API design patterns including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabilities
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• SKILL.md

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name: auth-implementation-patterns
description: Implement or review authentication and authorization with explicit token, session and resource-access boundaries.
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• SKILL.md

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name: backend-architect
description: Expert backend architect specializing in scalable API design, microservices architecture, and distributed systems.
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• SKILL.md

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name: k6-load-testing
description: Comprehensive k6 load testing skill for API, browser, and scalability testing. Write realistic load scenarios, analyze results, and integrate with CI/CD.
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• SKILL.md

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name: observability-engineer
description: Build production-ready monitoring, logging, and tracing systems. Implements comprehensive observability strategies, SLI/SLO management, and incident response workflows.
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• SKILL.md

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name: openapi-spec-generation
description: Generate and maintain OpenAPI 3.1 specifications from code, design-first specs, and validation patterns. Use when creating API documentation, generating SDKs, or ensuring API contract compliance.
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• SKILL.md

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name: airtable-automation
description: Automate Airtable tasks via Rube MCP (Composio): records, bases, tables, fields, views. Always search tools first for current schemas.
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• SKILL.md

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name: github-automation
description: Operate GitHub issues, pull requests, branches, checks, workflows, and permissions through Rube MCP. Use when GitHub work must be queried or changed programmatically with repository-policy safeguards.
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• SKILL.md

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name: googlesheets-automation
description: Automate Google Sheets operations (read, write, format, filter, manage spreadsheets) via Rube MCP (Composio). Read/write data, manage tabs, apply formatting, and search rows programmatically.
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