Tools and MCPs
10.6% of the published blueprint, which works out at about 5.6 items on a 53-item form. These are expected values across forms, not a promise about the form you sit.
3 published sub-domains, each separately weighted
Tool Implementation
4.4% · 2.3 items2+ itemsTool implementation practices for Claude applications, including tool use and function calling, configuration for external system interaction, tool description writing, error handling, tool usage patterns (agentic harness dispatch, client-side vs. server-side tools, approval patterns), and tool set construction best practices.
Agentic Customization
4.1% · 2.2 items2+ itemsTradeoffs among built-in Tools, custom Tools, Skills, and MCPs for selecting and applying the appropriate approach for a given use case.
MCP Server Development
2.1% · 1.1 items1–2 itemsMCP server development practices, including server authoring, deployment, integration with Claude applications, MCP resources, tools, and prompts, and communication patterns (stdio, sockets, client vs. server).
4 concept cards — tap one for the example, the instinct and the trap
Primary sources for this domain
The guide’s “How to Prepare” section says to review official Anthropic documentation for the Claude API, models, prompt engineering, Claude Code, Skills and MCP. These are those pages, taken from each site’s own llms.txt manifest rather than from a search.
Working the whole blueprint? The study guide carries the eligibility rules, the exam logistics and the full sub-domain allocation table.