Developer Tools & Repos Agent Skills for HTTP / API

Cargo.toml dependency management patterns for HASH workspace.

CarPlay Now Playing integration patterns.

Open source contribution workflow. Learns the target project's conventions, patterns, and CI requirements before writing code. Generates a…

CCXT cryptocurrency trading library. Use for cryptocurrency exchange APIs, trading, market data, order management, and crypto trading…

CCXT cryptocurrency exchange library for Python developers.

Generates UI components and feedback forms.

Discover EVM chains, RPC endpoints, native currencies, block explorers, and faucets using the Chainlist registry via Nethereum.DataServices

Design an API versioning and deprecation policy — semver rules, sunset timelines, and communication channels.

Write a changelog entry or release notes for an API version — breaking changes, new features, fixes.

Draft or update release notes and changelog entries from repository evidence.

Summarize all changes Claude Code made during this conversation.

This skill should be used when the GM needs to help players create Daggerheart characters, select a class/ancestry/community, define…

Use when choosing Core Data vs SwiftData, setting up the Core Data stack, modeling relationships, or implementing concurrency patterns…

Verifies required tools (Quarto, uv, Python, R, Stata, TeX) and Jupyter kernels are installed.

Use when the user asks "is AGP 8.2 compatible with Gradle 8.4", "will this Kotlin version work with my AGP", "what Gradle version does…

Validates all code changes before committing by running format, lint, type, and unit test checks.

Check and fix Checkstyle violations in jhelm modules

Generates Circuit Breaker pattern for PHP 8.4.

Classify GitHub PR review comments by severity and topic.

Implement or modify Ruby code using the claude-agent-sdk gem.

Expert skill for Claude Code CLI -- CLAUDE.md optimization, skill authoring, subagent creation, hooks automation, and context engineering.