Anthropic · CCAR-F
MCP servers and built-in tools
CCAR-F · Lesson 8 of 18 · 56:28
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In this lesson
Prepare for the Claude Certified Architect – Foundations exam, on the exam guide version 1.0, effective July 2026. In this lesson: MCP server scopes in Claude Code, project .mcp.json and user ~/.claude.json, environment variable expansion for secrets, tools discovered from every server, MCP descriptions that beat built-in tools, resources as content catalogs, community versus custom servers, and Read, Write, Edit, Grep, and Glob. Includes three original practice questions.
Preview the topics
- A new developer clones the repository, but Claude Code does not show the team’s documentation server, which a teammate configured last month. What is the most likely cause?
- A developer asks Claude to find every place that calls the function calculate_refund. Which built-in tool fits best?
- Claude’s Edit call fails, because the line to change appears in three places in the same file. What is a reliable fallback?