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What should I know before building an MCP tool?

Short answer from Learnetto's Best MCP courses and tutorials guide.

Short answer

You should know what data the tool can expose, who may call it, how errors are returned, where secrets live, and whether the assistant should act directly or ask for human approval.

Context from the full guide

Use DeepLearning.AI's Anthropic MCP course for a short hands-on path, Hugging Face's MCP Course for a free structured course, and the official Anthropic/OpenAI docs when you need implementation details for production agent tools.

Read Best MCP courses and tutorials

Useful resources

  1. MCP: Build Rich-Context AI Apps with Anthropic

    Short course · DeepLearning.AI · Intermediate

    You want a hands-on MCP course for connecting tools, context, and Claude-powered apps.

  2. Hugging Face MCP Course

    Free course · Hugging Face · Beginner to intermediate

    You want a free structured MCP path with concepts, assignments, SDKs, and a certificate route.

  3. Model Context Protocol Tutorial

    Free tutorial · Matt Pocock · Intermediate

    You want to understand MCP and build TypeScript MCP servers over stdio or HTTP, connect Claude Code to tools, use MCP prompts, and package servers for distribution.

  4. OpenAI MCP and connectors

    Guide · OpenAI · Intermediate

    You need the official OpenAI path for wiring MCP servers and connectors into agent workflows instead of inventing your own tool contract.

  5. Anthropic MCP guide

    Guide · Anthropic · Intermediate

    You want Anthropic's official guidance for exposing tools and data to Claude through MCP instead of only reading the base spec.

  6. Lazarus AI agent backdoor defense guide

    AI agent security analysis · Microsoft Research · Intermediate to advanced

    Understand Microsoft's Lazarus model-backdoor research, assess open-weight agent risk and add provenance, isolation and monitoring controls before deployment.

  7. Claude Fable 5.2 and Mythos 5.2 launch guide

    Frontier model news analysis · Anthropic · Intermediate to advanced

    Use this analysis to decide whether Claude Fable 5.2 belongs in a demanding agent workflow, plan migration tests and understand why Mythos access remains restricted.

  8. Uber production AI agent security guide

    AI agent security guide · Uber · Intermediate

    Use this guide to turn a production agent's purpose, tools and risk level into enforceable checks before it can take sensitive actions.

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