Claude Skills

Generate Berkshire-style acquisition memos for any company. Quick due diligence summaries in the Tiny Capital tradition - focused on fundamentals, honest about risks, no corporate BS. Use when evaluating potential investments or acquisitions.

Use when writing tests for serialization, validation, normalization, or pure functions - provides property catalog, pattern detection, and library reference for property-based testing

Use when writing database access code, creating schemas, or managing transactions with PostgreSQL - enforces transaction safety with TX_ naming, read-write separation, type safety for UUIDs/JSONB, and snake_case conventions to prevent data corruption and type errors

Start a new fiction project from scratch. Interactive wizard guides you through discovery, architecture, characters, world, and outline.

Remote-control tmux sessions for interactive CLIs by sending keystrokes and scraping pane output.

Use when analyzing YouTube videos, extracting insights from tutorials, researching video content, or learning from talks and presentations

Create video compositions with Editframe Elements. Use when working with ef-timegroup, ef-video, ef-audio, ef-image, ef-text, ef-captions, ef-waveform, ef-surface, building timelines, or generating captions/transcriptions.

Surface tacit knowledge through Socratic questioning. Use when a user needs help articulating an idea they can sense but not yet express, or when deeper exploration of a concept would reveal unstated assumptions. Focuses on drawing out understanding rather than proposing solutions.

Apply critical git safety protocols before any git operations, especially in collaborative environments. Use when performing git commands, managing files, or making destructive changes.

Brutally honest design critiques in the MetaLab tradition. Takes any URL and returns actionable feedback on typography, whitespace, hierarchy, and overall taste. Use when you want a professional design review without the $50k agency fee.

Code style discovery, validation, and guidance. Use when user says /code.

Explore and query blockchain subgraphs through a private MCP server running in Docker. Use this skill when exploring GraphQL subgraphs, querying blockchain data from subgraphs (NFT transfers, DEX swaps, DeFi metrics), examining subgraph schemas, or exporting discovered queries for project use. The skill manages Docker-based MCP server interaction and provides utilities for query development and export.

Extract structured information from markdown feature proposals.

CRITICAL: Use for generics, traits, zero-cost abstraction. Triggers: E0277, E0308, E0599, generic, trait, impl, dyn, where, monomorphization, static dispatch, dynamic dispatch, impl Trait, trait bound not satisfied, 泛型, 特征, 零成本抽象, 单态化

ReactUMG key 使用规范。在渲染列表、map 循环、拖拽预览、动态组件等场景时激活。key 标识组件身份而非位置，禁止使用坐标/索引等频繁变化的值作为 key，避免性能问题和组件重建。

This skill should be used when registering hooks, creating custom hooks for module APIs, debugging hook execution, handling async in hooks, or preventing memory leaks from unclean hook removal. Covers Hooks.on/once/call/callAll, lifecycle order, and common pitfalls.

Guidelines for creating API routes in Expo Router with EAS Hosting

Python configuration management via environment variables and typed settings. Use when externalizing config, setting up pydantic-settings, managing secrets, or implementing environment-specific behavior.