mcp
This is the mcp tag archive on Will's Journal: every published post that shares this tag, listed in one place.
It is a collection page, not a topic essay — scan the cluster here instead of filtering the full journal index.
Which posts are tagged mcp?
AI Agents How do I write good tool schemas for AI agents
Write tool schemas as agent UX: honest required fields, enums for closed sets, descriptions that constrain, and one non-overlapping tool per side effect.
AI Agents Sandboxed Tool Use: Letting Agents Act Without Letting Them Loose
Tool use without a sandbox is an API key with opinions. Allowlists, scoped credentials, blast-radius caps, dry-runs, and human gates earn a production write.
AI Agents Why did loading all my MCP tools blow the context window
Every MCP tool schema you attach is prompt tokens. Loading the whole catalog fills the window before the task starts—send a job-sized subset or a router.
AI Agents MCP vs Native Function Calling: Portability Tax vs Shortest Loop
Native function calling wins for one app's short tool loop; MCP earns the tax when tools must be shared and governed across hosts—not a LangChain swap.
AI Agents Tool Schemas Agents Follow: Descriptions, Enums, and Killing the Omnibus Tool
Agents invent arguments when schemas are vague. Write JSON Schema like agent UX—enums, required fields, property descriptions—and kill the do_anything tool.
What should you know about this tag archive?
What is this tag archive?
This is the mcp tag archive on Will's Journal: every published post that shares this tag, listed in one place.
Is this a guide to the topic, or a list of posts?
A list of posts. This page is a collection, not a topic essay — the 5 posts below are the mcp cluster on Will's Journal.