MCP Capability Inspector

Inspect a pasted MCP-style JSON description locally.

Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.

MCP Capability Inspector

Local inspection only: this tool parses JSON text you paste. It does not connect to any server, account or platform, and it does not run any listed tool.

How to use this tool

  1. Paste a JSON description with tools, resources and prompts arrays, then press Generate.
  2. Read the counts and checklist. Each listed item's name is shown.
  3. Use Load sample for a description with 2 tools and 1 resource.

Worked example

For a JSON description with tools “read_file” and “write_file” and resource “config”, the tool reports 2 tools, 1 resource and 0 prompts, and lists all three names.

What this tool does not do / Limits

This tool only inspects the JSON text you paste. It does not validate against a live MCP specification version, connect to a server, or execute anything listed.

Frequently asked questions

Does this connect to my MCP server?

No. It never makes a network request; it only reads the JSON text you paste.

What if my JSON is invalid?

The tool reports the parse error and shows nothing else, so you can fix the JSON and try again.

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