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How to connect LILT MCP to Claude

Connect Claude Web, Desktop and Cowork to LILT MCP. Translate latest product docs to spanish, create translation job for marketing site, and more using natural language, with authentication handled for you.

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LILT MCP is a hosted localization server exposing translation workflows and APIs. Use it to integrate translation and localization into AI-driven tools and pipelines.

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Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your LILT account to Claude via Composio Connect, enabling it to translate latest product docs to Spanish, create translation job for marketing site, review untranslated segments in ProjectX, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

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Connecting LILT to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your LILT account

Back in Claude, ask it to connect to LILT or give it any LILT-related task.

For example, ask Claude to:

  • "Translate latest product docs to Spanish"
  • "Create translation job for marketing site"
  • "Review untranslated segments in ProjectX"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your LILT account is ready to use.

What is the LILT Claude Connector, and what's possible with it?

The LILT MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your LILT account. It provides structured and secure access so your agent can perform LILT operations on your behalf.

Troubleshooting

1. Why does Claude not use the Composio connector for LILT?

The connector can show as connected, but Claude must use it in each LILT conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to LILT again.

2. Why does Claude show an MCP server error before LILT connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for LILT.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect LILT.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the LILT authorization link not work?

The Composio connector is one server. Your LILT account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the LILT connection.
  • Composio creates a fresh LILT authorization link.
  • Open that link in your browser and finish the LILT sign-in.

4. Why do LILT actions fail after they worked before?

The LILT connection can expire or lose permission.

  • Ask Claude to inspect the LILT connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the LILT account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in LILT.
  • If the action still fails with a permission error, check that the connected account has that permission in LILT itself.

5. How do I switch to a different LILT account?

Claude can manage the LILT connection for you.

  • Ask Claude to disconnect or delete the current LILT account.
  • Ask Claude to connect LILT again.
  • Open the new Composio authorization link for LILT.
  • Sign in with the other LILT account in the browser.
  • After the account connects, ask Claude to retry the LILT task.

6. Why is my LILT connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your LILT connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If LILT tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect LILT.
TOOLS

Supported Tools

Every LILT MCP action and event your agent gets out of the box.

Check job status

Checks the status of a verified translation job.

Create trained model

Creates a new trained translation model for a specific language pair.

Download job

Triggers a job export and returns a download link for the completed job.

Get credit balance information

Retrieves all available credit balances for the authenticated user.

Hello world

Returns a friendly hello world message.

List resources

Lists and filters jobs or models.

Translate files with verification

Create a verified translation job that will be assigned to professional LILT linguists for translation and review.

Translate text

Translates text using LILT's instant translate API.

Upload file

Upload a file to LILT for translation.

FRAMEWORKS

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ChatGPT

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Atomic Agent logo

Atomic Agent

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FAQ

Frequently asked questions

With a standalone LILT MCP server, the agents and LLMs can only access a fixed set of LILT tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from LILT and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right LILT tools.

Yes, absolutely. You can configure which LILT scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your LILT data and credentials are handled as safely as possible.

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