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How to let an LLM agent drive an embedded page through MCP tools with Vitre

Expose the Vitre step vocabulary to an agent as MCP tools so it can navigate, read and act on a page.

Authorization notice. Vitre is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Credentials. If the agent reads cookies or drives a logged-in session, it can access session data such as HttpOnly cookies, so limit what the page can expose.

Who it is forAn AI or platform engineer who wants an agent to operate a page in the app without writing Kotlin for each task.

The problemAn agent that has never seen a page needs a safe, readable way to act on it and see what each action returned.

The outcomeAn agent session where each page action appears as an MCP tools/call with the JSON response, and the page stays under control of the app.

What you need first

  • Kotlin 2.3.10 Multiplatform project (Android minSdk 24, iOS 15.0+, or desktop with JetBrains Runtime and JCEF 21)
  • Maven Central access, which is the only setup needed for the published artifacts
  • Compose Multiplatform if you want the optional vitre-compose UI layer

Steps

  1. Add vitre-mcp and vitre-core to your commonMain dependencies from Maven Central.
  2. Start the in-process MCP transport that vitre-mcp provides in your app.
  3. Connect your MCP-capable model client to that transport.
  4. Ask the agent for a task on the page, then review each tools/call result it returns.

Prompt for your agent

Using the vitre-mcp module in <project-path>, connect an MCP client to the in-process Vitre server and ask it to <task-on-page>. Expected output: a sequence of tools/call requests and JSON results, ending in a final answer. Verify that each step's JSON result matches the actual page state shown in the WebView.

Caveat. The README says the Koog tools are a separate delivery, and this MCP path is an in-process transport, so wire up your own model client rather than expecting a hosted service.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for ggoggam/vitre and "Let an LLM agent drive an embedded page through MCP tools"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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