Engineering Essentials
Frontend, API integration, MCP servers, browser testing, and network debugging — the day-to-day software stack.
Install the whole bundle
5 skills into ~/.claude/skills/. Free.
Paste into your terminal. Restart Claude Code afterwards — new skills are picked up on startup.
git clone https://github.com/alirezarezvani/claude-skills.git /tmp/alirezarezvani__claude-skills
mkdir -p ~/.claude/skills/senior-frontend-alirezarezvani && cp -r /tmp/alirezarezvani__claude-skills/engineering-team/skills/senior-frontend/. ~/.claude/skills/senior-frontend-alirezarezvani/
git clone https://github.com/anthropics/skills.git /tmp/anthropics__skills
mkdir -p ~/.claude/skills/claude-api && cp -r /tmp/anthropics__skills/skills/claude-api/. ~/.claude/skills/claude-api/
mkdir -p ~/.claude/skills/mcp-builder && cp -r /tmp/anthropics__skills/skills/mcp-builder/. ~/.claude/skills/mcp-builder/
mkdir -p ~/.claude/skills/webapp-testing && cp -r /tmp/anthropics__skills/skills/webapp-testing/. ~/.claude/skills/webapp-testing/
git clone https://github.com/daymade/claude-code-skills.git /tmp/daymade__claude-code-skills
mkdir -p ~/.claude/skills/debugging-network-issues-daymade && cp -r /tmp/daymade__claude-code-skills/debugging-network-issues/. ~/.claude/skills/debugging-network-issues-daymade/This copies each skill's full folder (SKILL.md plus any supporting scripts, reference docs, or asset templates) so every skill works out of the box. Safe default.
Faster alternative (instruction-only skills)
Skips the git clone and downloads only each SKILL.md. Avoid if any skill in the bundle ships Python scripts, reference markdowns, or asset templates — they'll be missing and the skill will fail when it tries to load them.
mkdir -p ~/.claude/skills/senior-frontend-alirezarezvani && curl -fsSL https://raw.githubusercontent.com/alirezarezvani/claude-skills/main/engineering-team/skills/senior-frontend/SKILL.md -o ~/.claude/skills/senior-frontend-alirezarezvani/SKILL.md
mkdir -p ~/.claude/skills/claude-api && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/main/skills/claude-api/SKILL.md -o ~/.claude/skills/claude-api/SKILL.md
mkdir -p ~/.claude/skills/mcp-builder && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/main/skills/mcp-builder/SKILL.md -o ~/.claude/skills/mcp-builder/SKILL.md
mkdir -p ~/.claude/skills/webapp-testing && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/main/skills/webapp-testing/SKILL.md -o ~/.claude/skills/webapp-testing/SKILL.md
mkdir -p ~/.claude/skills/debugging-network-issues-daymade && curl -fsSL https://raw.githubusercontent.com/daymade/claude-code-skills/main/debugging-network-issues/SKILL.md -o ~/.claude/skills/debugging-network-issues-daymade/SKILL.mdWhat's inside
Senior Frontend Engineer
alirezarezvani
Frontend development skill for React, Next.js, TypeScript, and Tailwind CSS applications. Use when building React components, optimizing Next.js performance, analyzing bundle sizes, scaffolding frontend projects, implementing accessibility, or reviewing frontend code quality.
Claude API Helper
anthropics
Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. Also handles migrating existing Claude API code between Claude model versions (4.5 → 4.6, 4.6 → 4.7, retired-model replacements). TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`; user asks for the Claude API, Anthropic SDK, or Managed Agents; user adds/modifies/tunes a Claude feature (caching, thinking, compaction, tool use, batch, files, citations, memory) or model (Opus/Sonnet/Haiku) in a file; questions about prompt caching / cache hit rate in an Anthropic SDK project. SKIP: file imports `openai`/other-provider SDK, filename like `*-openai.py`/`*-generic.py`, provider-neutral code, general programming/ML.
MCP Server Builder
anthropics
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
Playwright Web App Testing
anthropics
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
Network & Streaming Debugger
daymade
Evidence-driven investigation for network, streaming, and protocol-layer bugs. Use when debugging connection resets (ECONNRESET, HTTP/2 RST_STREAM, INTERNAL_ERROR), SSE or long-polling stalls, fixed-time connection drops, CDN/proxy/CGNAT idle timeouts, or any incident where symptoms do not match the obvious cause. Applies falsification-first methodology — layered isolation experiments to pin down the responsible network layer, env-gated runtime instrumentation for non-invasive observation, and counter-review agent teams to challenge single-cause assumptions. Strongly trigger on "socket closed unexpectedly", "stream interrupted", "ECONNRESET", "HTTP/2 INTERNAL_ERROR", "fails after N seconds", "works sometimes but not always", "upstream silent for X seconds", or any scenario where the investigator might jump to conclusions before evidence. Generalizes to any multi-layer system investigation where assumption-first thinking is the failure mode.