# How to integrate CarsXE MCP with Atomic Agent

```json
{
  "title": "How to integrate CarsXE MCP with Atomic Agent",
  "toolkit": "CarsXE",
  "toolkit_slug": "carsxe",
  "framework": "Atomic Agent",
  "framework_slug": "atomic-agent",
  "url": "https://composio.dev/toolkits/carsxe/framework/atomic-agent",
  "markdown_url": "https://composio.dev/toolkits/carsxe/framework/atomic-agent.md",
  "updated_at": "2026-08-14T06:02:33.668Z"
}
```

## Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including CarsXE.
This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a CarsXE account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions.

## Also integrate CarsXE with

- [ChatGPT](https://composio.dev/toolkits/carsxe/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/carsxe/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/carsxe/framework/hermes-agent)

## TL;DR

### How Atomic Agent connects to CarsXE
Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.
Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

## Connect CarsXE to Atomic Agent

### Connect CarsXE to Atomic Agent
- Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key.
- In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
- Ask Atomic Agent to do something in CarsXE. It searches Composio for the right tool.
- On first use, open the sign-in link returned in the chat. Connect your CarsXE account, then return to Atomic Agent to continue.
### Headless setup
Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

```bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY
```

## What is the CarsXE MCP server, 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.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CARSXE_CHECK_LIEN_AND_THEFT` | Check Lien and Theft Records | Retrieve reportable US lien and theft events for a VIN. A no-data response means CarsXE has no reportable record and is not proof that the vehicle is clear. |
| `CARSXE_DECODE_LICENSE_PLATE` | Decode License Plate | Look up vehicle identity from a license plate using CarsXE's current global v2 decoder. |
| `CARSXE_DECODE_OBD_CODE` | Decode OBD Code | Translate an OBD-II diagnostic trouble code into a readable diagnosis. |
| `CARSXE_GET_MARKET_VALUE` | 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. |
| `CARSXE_GET_RECALL_BATCH` | Get Recall Batch | Make exactly one read request for a CarsXE recall batch. The default status view returns current progress. The results view is available only when the batch is completed or partial and returns a bounded local page (100 rows by default, at most 1,000) from CarsXE's complete array; use result_offset to continue. CarsXE returns 409 while results are not ready. This tool makes one provider request and never polls internally. |
| `CARSXE_GET_VEHICLE_HISTORY` | Get Vehicle History | Retrieve title, brand, junk/salvage, insurance, VIN-change, and historical title records for a VIN. |
| `CARSXE_GET_VEHICLE_IMAGES` | 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. |
| `CARSXE_GET_VEHICLE_RECALLS` | Get Vehicle Recalls | Find safety recall campaigns either for one VIN or for a year, make, and model. Supply exactly one lookup method. |
| `CARSXE_GET_VEHICLE_SPECS` | Get Vehicle Specifications | Decode a 17-character VIN into vehicle identity, specifications, equipment, colors, and warranty data. International decoding is used automatically when CarsXE needs it unless explicitly disabled. |
| `CARSXE_GET_YEAR_MAKE_MODEL_DATA` | Get Year Make Model Data | Look up detailed vehicle and trim information by year, make, and model without a VIN. Returns bounded trim summaries rather than large feature and color payloads. |
| `CARSXE_RECOGNIZE_LICENSE_PLATE` | Recognize License Plate | Analyze a publicly accessible vehicle image and return license-plate candidates, regions, confidence, bounding boxes, and detected vehicle details. |
| `CARSXE_SUBMIT_RECALL_BATCH` | Submit Recall Batch | Create one asynchronous CarsXE recall-check batch for 1 to 10,000 VIN entries. Submission charges one Recalls Batch unit per unique valid VIN after CarsXE normalizes and deduplicates the list. The action makes one submission request and does not poll or resubmit an ambiguous failure; use the returned batch ID to check progress or retrieve results later. |

## Supported Triggers

None listed.

## Troubleshooting

### Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

### Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

### Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See [Composio pricing](/pricing) for the current limits that apply to your connection.

## Complete Code

None listed.

## Conclusion

### Use CarsXE from Atomic Agent
With your account connected, ask Atomic Agent to work with CarsXE in natural language. You can connect more apps through the same Composio integration as you need them.
Visit the [Atomic Agent website](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo).

## How to build CarsXE MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/carsxe/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/carsxe/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/carsxe/framework/hermes-agent)

## Related Toolkits

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- [Adafruit IO](https://composio.dev/toolkits/adafruit_io) - Adafruit IO is Adafruit's cloud platform for connected device and IoT project data. It helps you store, visualize, and act on sensor feeds without running your own backend.
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- [Ambee](https://composio.dev/toolkits/ambee) - Ambee is an environmental data platform providing real-time, hyperlocal APIs for air quality, weather, and pollen. Get precise environmental insights to power smarter decisions in your apps and workflows.
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- [Anonyflow](https://composio.dev/toolkits/anonyflow) - Anonyflow is a service for encryption-based data anonymization and secure data sharing. It helps organizations meet GDPR, CCPA, and HIPAA data privacy compliance requirements.
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- [Api ninjas](https://composio.dev/toolkits/api_ninjas) - Api ninjas offers 120+ public APIs spanning categories like weather, finance, sports, and more. Developers use it to supercharge apps with real-time data and actionable endpoints.
- [Api sports](https://composio.dev/toolkits/api_sports) - Api sports is a comprehensive sports data platform covering 2,000+ competitions with live scores and 15+ years of stats. Instantly access up-to-date sports information for analysis, apps, or chatbots.
- [Apify](https://composio.dev/toolkits/apify) - Apify is a cloud platform for building, deploying, and managing web scraping and automation tools called Actors. It lets you automate data extraction and workflow tasks at scale—no infrastructure headaches.
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- [Beach Day API](https://composio.dev/toolkits/beach_day_api) - Beach Day API is a beach intelligence service for search, conditions, scores, rules, amenities, tides, and country coverage. Use it to power trip planning, surf reports, safety checks, and location-aware beach discovery.
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- [Bigpicture io](https://composio.dev/toolkits/bigpicture_io) - BigPicture.io offers APIs for accessing detailed company and profile data. Instantly enrich your applications with up-to-date insights on 20M+ businesses.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and CarsXE MCP?

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.

### Can I use Tool Router MCP with Atomic Agent?

Yes, you can. Atomic Agent 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.

### Can I manage the permissions and scopes for CarsXE while using Tool Router?

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.

### How safe is my data with Composio Tool Router?

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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