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How to connect CarsXE to Claude

Connect Claude Web, Desktop and Cowork to CarsXE MCP. Decode vin and summarize vehicle specs, check recalls for a used car, and more using natural language, with authentication handled for you.

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CarsXE is a vehicle data API platform for VIN specs, recalls, license plate decoding, market values, history, images, and automotive lookups. Use it to turn raw vehicle identifiers into clear, useful car data fast.

12 Tools

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 CarsXE account to Claude via Composio Connect, enabling it to decode VIN and summarize vehicle specs, check recalls for a used car, estimate market value from license plate, 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.

Also integrate CarsXE with

ChatGPTHermesAtomic Agent

Connecting CarsXE 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 CarsXE account

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

For example, ask Claude to:

  • "Decode VIN and summarize vehicle specs"
  • "Check recalls for a used car"
  • "Estimate market value from license plate"

It will prompt you to authenticate and authorize access.

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

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

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

Troubleshooting

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

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

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

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

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

  • 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 CarsXE.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the CarsXE authorization link not work?

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

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

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

The CarsXE connection can expire or lose permission.

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

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

Claude can manage the CarsXE connection for you.

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

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

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

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If CarsXE 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 CarsXE.
TOOLS

Supported Tools

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

Check Lien and Theft Records

Retrieve reportable US lien and theft events for a VIN.

Decode License Plate

Look up vehicle identity from a license plate using CarsXE's current global v2 decoder.

Decode OBD Code

Translate an OBD-II diagnostic trouble code into a readable diagnosis.

Get Vehicle Market Value

Estimate wholesale, retail, and trade-in values for a VIN using CarsXE's current v2 valuation, optionally adjusted for state, mileage, and condition.

Get Recall Batch

Make exactly one read request for a CarsXE recall batch.

Get Vehicle History

Retrieve title, brand, junk/salvage, insurance, VIN-change, and historical title records for a VIN.

Get Vehicle Images

Find up to 10 vehicle photos by make and model, with optional year, trim, angle, image type, size, color, quality, transparency, and license filters.

Get Vehicle Recalls

Find safety recall campaigns either for one VIN or for a year, make, and model.

Get Vehicle Specifications

Decode a 17-character VIN into vehicle identity, specifications, equipment, colors, and warranty data.

Get Year Make Model Data

Look up detailed vehicle and trim information by year, make, and model without a VIN.

Recognize License Plate

Analyze a publicly accessible vehicle image and return license-plate candidates, regions, confidence, bounding boxes, and detected vehicle details.

Submit Recall Batch

Create one asynchronous CarsXE recall-check batch for 1 to 10,000 VIN entries.

FRAMEWORKS

How to build CarsXE MCP Agent with another framework

ChatGPT logo

ChatGPT

Use CarsXE MCP with ChatGPT

Hermes logo

Hermes

Use CarsXE MCP with Hermes

Atomic Agent logo

Atomic Agent

Use CarsXE MCP with Atomic Agent

FAQ

Frequently asked questions

With a standalone CarsXE MCP server, the agents and LLMs can only access a fixed set of CarsXE tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from CarsXE 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 CarsXE tools.

Yes, absolutely. You can configure which CarsXE 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 CarsXE data and credentials are handled as safely as possible.

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