MCP Tutorial (No Command Line)

This guide is for beginners.

The goal is simple:

• no terminal
• no commands
• only the NextClaw UI

You will complete one full MCP flow:

1. install
2. check
3. use it in chat

If you only want the short version, remember this:

1. open Marketplace -> MCP
2. click Install
3. run Doctor before trying to use it in chat

1) What MCP means here

MCP is a standard way to give your AI external tool capabilities.

It is not a separate chat mode.

The real flow is:

1. install an MCP server
2. verify it is reachable
3. let the agent use it as part of its toolset

So the mental model should be:

• MCP is a tool source
• chat is still where you actually use it

2) Open the MCP marketplace

In the left sidebar of NextClaw:

• open Marketplace
• then open MCP

You will usually see two areas:

• MCP Market: installable MCP items
• Installed MCP: MCP servers you already installed

Each card usually shows:

• name
• short summary
• transport type such as STDIO, HTTP, or SSE
• current status

3) Install one MCP

Find an item in the MCP market and click Install.

The install dialog usually includes:

• Server Name
• Available to All Agents
• optional input fields required by that MCP

For beginners, the safest default is:

• keep the default server name
• keep Available to All Agents enabled
• only change extra inputs if you clearly know what they do

After install, the item should appear in:

• Installed MCP

In most cases, you do not need to restart the service.

4) Always run Doctor first

Installed does not always mean usable.

The most important next step is:

• click Doctor on the installed MCP card

Pay attention to:

• Accessible
• Transport
• Tools

The ideal result is:

• Accessible = true
• Tools > 0

That means:

• NextClaw can reach the MCP server
• and it can already discover tools from it

If Doctor fails, do not assume chat will still use it correctly.

5) How to actually use it after that

Once Doctor passes, go back to chat.

Important:

• you do not open a separate “MCP chat”
• you do not switch into a special MCP mode

You just talk to the agent normally.

Examples:

• “Use the browser tools to inspect this page.”
• “Check this external service for me.”
• “Use the installed tool to verify the current state.”

If your current runtime/agent supports MCP, the installed MCP server becomes an extra tool source.

6) Chrome DevTools MCP as an example

Chrome DevTools MCP is a good example of how this works.

You can install it from the MCP marketplace without touching the command line.

But there is one important detail:

• some MCP servers depend on external programs or system state

For Chrome DevTools MCP, that usually means Chrome itself must be in a connectable state.

So the correct flow is:

1. install it in UI
2. run Doctor
3. if Doctor fails, fix the browser-side requirement first

So for beginner users:

• installation can be no-command-line
• usability still depends on the MCP's own prerequisites
• Doctor is the final truth

7) What Enable / Disable / Remove mean

After install, you will usually see actions like:

• Disable
• Doctor
• Remove

Think of them like this:

• Disable

  • temporarily stop using it
  • keep the config
  • re-enable later

• Doctor

  • test whether it is actually reachable and usable

• Remove

  • delete the MCP config entirely
  • use this if you installed the wrong one or want to start over

If you only want to pause it, use Disable.

If you are done with it, use Remove.

8) Beginner-friendly order

For your first MCP setup, use this order:

1. choose an official or well-documented MCP item
2. install with default values
3. run Doctor immediately
4. only test in chat after Doctor passes
5. if it fails, check the MCP's external prerequisite before blaming chat

9) Best next step

If this is your first time using MCP, do this:

1. open Marketplace -> MCP
2. choose the simplest item you understand
3. click Install
4. click Doctor
5. if it becomes accessible, go to chat and test it once

Related docs

• Tools
• Chat Capabilities
• Troubleshooting
• Tutorial Hub