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This guide covers manual installation of the MCP servers. If you used the Char plugin, these are already configured.

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The MCP servers

ServerPurpose
Chrome DevToolsBrowser automation—navigate pages, click elements, test WebMCP tools
Char DocsAccess Char documentation from Claude Code
WebMCP DocsAccess WebMCP API documentation
Char SaaSManage your Char account—SSO config, org settings, browser tools

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Install all servers

Run these commands in your terminal: 
claude mcp add chrome-devtools npx @mcp-b/chrome-devtools-mcp@latest
claude mcp add --transport http char-docs https://docs.usechar.ai/mcp
claude mcp add --transport http webmcp-docs https://docs.mcp-b.ai/mcp
claude mcp add --transport http char-saas https://app.usechar.ai/mcp
Restart Claude Code to load the servers.

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Verify installation

/mcp
Confirm you see all four servers listed.

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First-time authentication

The first time you use a Char SaaS tool, a browser window opens:
  1. Sign in — Use your identity provider or create a new account
  2. Name your organization — Char suggests a name based on your email domain
  3. Authorize — Click “Authorize” and return to Claude Code
This only happens once. Claude Code remembers your session.

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Troubleshooting

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MCP not appearing

Restart Claude Code to reload MCPs.

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Permission errors

Install Chrome DevTools MCP globally: 
npm install -g @mcp-b/chrome-devtools-mcp
claude mcp add chrome-devtools chrome-devtools-mcp

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OAuth flow not completing

  1. Check that you completed the sign-in flow
  2. Verify the browser didn’t block the redirect
  3. Restart Claude Code and try the tool again

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See also