The library
🤖 MCP & Agents
Wire real MCP servers into Claude and write agent system prompts that actually behave.
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Deep Research Agent with Verifiable Citations
A research-agent system prompt (extended from Anthropic's cookbook research agent) that plans sub-questions, searches, cross-checks sources and returns a cited report with confidence levels.
Set Up Your MCP Dev Stack in Claude Code: GitHub, Postgres, Playwright, Filesystem
A guided setup prompt that has Claude Code install, scope and smoke-test four real MCP servers — GitHub, Postgres MCP Pro, Playwright and Filesystem — with least-privilege defaults and a written runbook.
Production Agent System Prompt Template
A fill-in-the-blanks system prompt for tool-using agents — role, goals, tool policy, autonomy limits, escalation rules, output contract and self-checks — following Anthropic's published guidance on building effective agents.
Exploratory QA Agent with Playwright MCP
Turns Claude Code + Playwright MCP into a methodical QA tester: it explores your app like a user, reproduces bugs with exact steps, and writes Playwright regression tests for what it finds.