The 2026-07-28 MCP spec makes tool catalogs cheap to scale — and tool selection your new bottleneck. Why agent reliability is now a training-data problem, and what to do about it during migration.

If you've added an MCP server to a claude_desktop_config.json or an mcp.json file this year by...

MCP makes it easy to expose tools. That creates new failure modes. Here's how to design tools, manage catalogs, and segment gateways for enterprise scale.