How to connect Nano nets to Claude

Connect Claude Web, Desktop and Cowork to Nano nets MCP. Extract table data from recent invoices, upload new receipts for ocr model training, and more using natural language, with authentication handled for you.

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Nano nets is an AI-powered Intelligent Document Processing API for extracting structured data from unstructured documents. It boosts workflow automation by turning messy documents into clean, usable information.

11 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 Nano nets account to Claude via Composio Connect, enabling it to extract table data from recent invoices, upload new receipts for OCR model training, list all documents processed by a workflow, 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 Nano nets with

Connecting Nano nets 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 Nano nets account

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

For example, ask Claude to:

  • "Extract table data from recent invoices"
  • "Upload new receipts for OCR model training"
  • "List all documents processed by a workflow"

It will prompt you to authenticate and authorize access.

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

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

The Nano nets MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Nano nets account. It provides structured and secure access to your intelligent document processing tools, so your agent can create, manage, and train OCR models, extract data from documents, and automate document workflows on your behalf.

  • Automated document data extraction: Let your agent process unstructured documents and pull out structured data using Nano nets' powerful AI-driven OCR models.
  • OCR model management: Easily create, update, and delete OCR models, allowing your agent to adjust to changing document types and business needs.
  • Workflow and document handling: Enable your agent to list, track, and manage documents within workflows, so you can monitor processing status and outcomes efficiently.
  • Training image uploads and model improvement: Have your agent upload new training images to OCR models, continually improving accuracy and adapting to new document formats.
  • Comprehensive model insights: Retrieve detailed information about your OCR models and their prediction files, empowering your agent to audit, debug, or optimize model performance as needed.

Troubleshooting

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

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

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

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

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

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

3. Why does the Nano nets authorization link not work?

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

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

4. Why do Nano nets actions fail after they worked before?

The Nano nets connection can expire or lose permission.

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

5. How do I switch to a different Nano nets account?

Claude can manage the Nano nets connection for you.

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

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

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

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

Supported Tools

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

Create Model

Tool to create a new image classification or OCR model.

Delete OCR Model

Permanently deletes an OCR model from Nanonets.

Get All Models

Retrieves all models (OCR and Image Classification) in the user's NanoNets account.

Get All Prediction Files

Retrieve all prediction files (OCR results) for a NanoNets model.

Get OCR Model Details

Tool to retrieve details of an OCR model.

Get OCR Training Images

Tool to retrieve training images for an OCR model.

Get Workflows

Tool to retrieve a list of all workflows in your Nanonets account.

List Workflow Documents

Retrieve a paginated list of documents processed by a NanoNets workflow.

Update Model AI Guidelines

Update AI Agent guidelines for an OCR model.

Upload Training Images by File

Tool to upload a training image file to a specified OCR model.

Upload Training Images by URL

Tool to upload training images by URL to a specified OCR model.

FAQ

Frequently asked questions

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

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

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