MCP · Building servers

Tool Design for Agents

Video + articles

Video

Your MCP Server is Bad (and you should feel bad) - Jeremiah Lowin, Prefect

AI Engineer · 55 min · January 12, 2026

Articles

Writing effective tools for AI agents—using AI agents

Anthropic Engineering · Anthropic · September 11, 2025

Define tools

Claude Platform documentation · Anthropic

Effective context engineering for AI agents

Anthropic Engineering · Anthropic · September 29, 2025

Supplementary

How to Design a Perfect MCP in 2026: Common Mistakes, Consequences, Blueprint

The 10x Stack · 9 min · August 16, 2026

Tool, skill, or subagent? Decomposing an agent that outgrew its prompt

Claude · 45 min · May 23, 2026