How to connect Elorus to Claude Cowork

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Elorus account to Cowork via Composio Connect, enabling it to create a new invoice for Acme Corp, list all unpaid bills from last month, email latest invoice to a specific contact, and more such actions on your behalf without compromising your account security.

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Elorus is an online invoicing and time-tracking software for freelancers and small businesses. Easily manage finances, bill clients, and track work in one place.

13 Tools

Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Elorus account to Cowork via Composio Connect, enabling it to create a new invoice for Acme Corp, list all unpaid bills from last month, email latest invoice to a specific contact, and more such actions on your behalf without compromising your account security.

Also integrate Elorus with

Connecting Elorus to Claude Cowork

1. Open Customize

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

2. Add the Composio MCP server

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

3. 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 Cowork

4. Connect your Elorus account

Back in Cowork, ask the agent to connect to Elorus or give it any Elorus-related task.

For example, ask Cowork to:

  • "Create a new invoice for Acme Corp"
  • "List all unpaid bills from last month"
  • "Email latest invoice to a specific contact"

It will prompt you to authenticate and authorize access.

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

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Elorus through MCP without you sharing account credentials directly with the agent.

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

The Elorus MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Elorus account. It provides structured and secure access to your invoicing, billing, and time-tracking tools, so your agent can perform actions like creating invoices, managing contacts, tracking estimates, and sending billing communications on your behalf.

  • Automated invoice creation and delivery: Instruct your agent to generate new invoices, fill in all necessary details, and instantly email them to clients or contacts with just a prompt.
  • Comprehensive contact management: Ask your agent to fetch, list, and organize your business contacts, so you can easily keep your client database up to date or find specific clients in seconds.
  • Dynamic bills and expenses tracking: Let your agent retrieve and manage lists of bills and expenses, helping you stay on top of accounts payable and overall financial health.
  • Flexible product and service catalog management: Direct your agent to create new products or services, update details, or fetch lists of items for invoicing and inventory purposes.
  • Estimates and credit notes retrieval: Have your agent pull up estimates or credit notes with filters for date, contact, or status—ideal for monitoring ongoing deals and financial adjustments.
TOOLS

Supported Tools

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

Create Invoice

Creates a new invoice or receipt in Elorus.

CREATE_PRODUCT

Create a new product or service in Elorus.

Email Invoice

Tool to email an existing invoice to specified contacts.

Get Bills

Retrieve a paginated list of bills (expenses/purchases) from Elorus.

Get Contacts

Tool to retrieve a list of contacts.

Get Credit Notes

Tool to retrieve a list of credit notes.

Get Email Templates

Tool to retrieve a list of email templates.

Get Estimates

Tool to retrieve a list of estimates.

Get Invoices

Retrieves a paginated list of invoices from Elorus with flexible filtering options.

Get Products

Tool to retrieve a list of products/services with optional filtering, sorting, and pagination.

Get Taxes

Tool to retrieve a list of taxes.

Get Templates

Retrieves document templates used for formatting invoices, estimates, credit notes, and other business documents in Elorus.

Update Contact

Update an existing contact in Elorus by ID.

FAQ

Frequently asked questions

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

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

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