# How to connect Jev to Claude

```json
{
  "title": "How to connect Jev to Claude",
  "toolkit": "Jev",
  "toolkit_slug": "jev",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/jev/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/jev/framework/claude-cowork.md",
  "updated_at": "2026-09-18T05:34:05.898Z"
}
```

## 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 Jev account to Claude via Composio Connect, enabling it to list available Jev models and versions, run a noul evaluation on model-x, compare two models using score questions, 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 Jev with

- [ChatGPT](https://composio.dev/toolkits/jev/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/jev/framework/hermes-agent)

## Connect Jev to Claude Cowork

### Connecting Jev 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](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Composio&connectorUrl=https%3A%2F%2Fconnect.composio.dev%2Fmcp)
### Add manually
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## What is the Jev MCP server, and what's possible with it?

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

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `JEV_EVALUATE_STATE` | Evaluate State | Evaluate one shared state against one or more named Noul, Choice, or Score questions in parallel; each call performs usage-priced inference. |
| `JEV_LIST_MODELS` | List Models | List the Jev model names and aliases available to the connected account for use in evaluations. |

## Supported Triggers

None listed.

## Troubleshooting

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

The connector can show as connected, but Claude must use it in each Jev conversation.
- Click + at the lower left of the chat, or type /.
- Hover Connectors.
- Turn on Composio.
- Ask Claude to connect to Jev again.

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

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Jev.
- 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 Jev.
- If it fails again, send the error and the ofid_ reference id to support@composio.dev.

### 3. Why does the Jev authorization link not work?

The Composio connector is one server. Your Jev account connects separately when Claude asks for it.
- If the browser does not open, or the link expires, ask Claude to retry the Jev connection.
- Composio creates a fresh Jev authorization link.
- Open that link in your browser and finish the Jev sign-in.

### 4. Why do Jev actions fail after they worked before?

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

### 5. How do I switch to a different Jev account?

Claude can manage the Jev connection for you.
- Ask Claude to disconnect or delete the current Jev account.
- Ask Claude to connect Jev again.
- Open the new Composio authorization link for Jev.
- Sign in with the other Jev account in the browser.
- After the account connects, ask Claude to retry the Jev task.

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

The connector belongs to your Claude account, so your Jev connection works in Claude Web, Desktop, and Cowork.
- In Claude Desktop, open Customize > Connectors.
- Next to Composio, click ⋮ and click Clear cache.
- If Jev 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 Jev.

## Creating MCP Server - Stand-alone vs Composio SDK

The Jev MCP server connects Claude Web, Desktop, and Cowork to your Jev account through Composio. Once connected, Claude can use the available Jev tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Jev MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/jev/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/jev/framework/hermes-agent)

## Related Toolkits

- [Composio](https://composio.dev/toolkits/composio) - Composio is an integration platform that connects AI agents with hundreds of business tools. It streamlines authentication and lets you trigger actions across services—no custom code needed.
- [Composio search](https://composio.dev/toolkits/composio_search) - Composio search is a unified web search toolkit spanning travel, e-commerce, news, financial markets, images, and more. It lets you and your apps tap into up-to-date web data from a single, easy-to-integrate service.
- [Perplexityai](https://composio.dev/toolkits/perplexityai) - Perplexityai delivers natural, conversational AI models for generating human-like text. Instantly get context-aware, high-quality responses for chat, search, or complex workflows.
- [Browser tool](https://composio.dev/toolkits/browser_tool) - Browser tool is a virtual browser integration that lets AI agents interact with the web programmatically. It enables automated browsing, scraping, and action-taking from any AI workflow.
- [Ai ml api](https://composio.dev/toolkits/ai_ml_api) - Ai ml api is a suite of AI/ML models for natural language and image tasks. It provides fast, scalable access to advanced AI capabilities for your apps and workflows.
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- [All images ai](https://composio.dev/toolkits/all_images_ai) - All-Images.ai is an AI-powered image generation and management platform. It helps you create, search, and organize images effortlessly with advanced AI capabilities.
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- [Anthropic administrator](https://composio.dev/toolkits/anthropic_administrator) - Anthropic administrator is an API for managing Anthropic organizational resources like members, workspaces, and API keys. It helps you automate admin tasks and streamline resource management across your Anthropic organization.
- [Api labz](https://composio.dev/toolkits/api_labz) - Api labz is a platform offering a suite of AI-driven APIs and workflow tools. It helps developers automate tasks and build smarter, more efficient applications.
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- [Apipie ai](https://composio.dev/toolkits/apipie_ai) - Apipie ai is an AI model aggregator offering a single API for accessing top AI models from multiple providers. It helps developers build cost-efficient, latency-optimized AI solutions without juggling multiple integrations.
- [Arize AX](https://composio.dev/toolkits/arize_ax) - Arize AX is an AI engineering platform for tracing, evaluating, and improving AI applications. Use it to debug LLM behavior, compare experiments, and improve production AI quality.
- [Artificial Analysis](https://composio.dev/toolkits/artificial_analysis) - Artificial Analysis is an independent benchmarking platform for AI models and API providers. Use it to compare model intelligence, coding, math, pricing, latency, throughput, and arena rankings.
- [AssemblyAI](https://composio.dev/toolkits/assemblyai) - AssemblyAI is a speech-to-text and audio intelligence API for uploaded or hosted media. Use it to turn audio and video into accurate transcripts, summaries, and insights.
- [Astica ai](https://composio.dev/toolkits/astica_ai) - Astica ai provides APIs for computer vision, NLP, and voice synthesis. Integrate advanced AI features into your app with a single API key.
- [Avoma](https://composio.dev/toolkits/avoma) - Avoma is an AI meeting assistant for recording, transcribing, analyzing, and managing meetings, calls, notes, scorecards, and conversation intelligence. It helps teams turn conversations into searchable notes, follow-ups, coaching insights, and revenue intelligence.
- [Bland AI](https://composio.dev/toolkits/bland_ai) - Bland AI is a conversational AI platform for building voice agents, phone calls, messaging, and communication workflows. Use it to automate calling, evaluate conversations, and run voice operations at scale.
- [BotMape](https://composio.dev/toolkits/botmape) - BotMape is an API platform for building AI agents, knowledge bases, conversations, and messages. Use it to manage agent workflows and track usage analytics from one place.
- [BrainGraph](https://composio.dev/toolkits/brain_graph) - BrainGraph builds a searchable knowledge graph from documents, recordings, web pages, and other source material. It provides structured, grounded knowledge to improve AI reasoning and retrieval.

## Frequently Asked Questions

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

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

### Can I use Tool Router MCP with Claude Cowork?

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 Jev tools.

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

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

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