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How to connect Chaser to Claude

Connect Claude Web, Desktop and Cowork to Chaser MCP. Create a new invoice for customer abc ltd, list all customers with overdue invoices, and more using natural language, with authentication handled for you.

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Chaser is accounts receivable automation software that sends invoice reminders and helps businesses get paid faster. It streamlines the collections process to save time and improve cash flow.

30 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 Chaser account to Claude via Composio Connect, enabling it to create a new invoice for customer ABC Ltd, list all customers with overdue invoices, update email address for customer by external ID, 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.

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Connecting Chaser 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 Chaser account

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

For example, ask Claude to:

  • "Create a new invoice for customer ABC Ltd"
  • "List all customers with overdue invoices"
  • "Update email address for customer by external ID"

It will prompt you to authenticate and authorize access.

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

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

The Chaser MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Chaser account. It provides structured and secure access to your accounts receivable data, so your agent can create and manage invoices, update customer records, generate credit notes, and retrieve key financial details on your behalf.

  • Automated invoice management: Create, update, and track invoices programmatically—making it easy for your agent to help you stay on top of accounts receivable.
  • Customer information handling: Retrieve, create, and update customer records so your assistant can help onboard new clients or keep customer details up-to-date.
  • Credit note processing: Generate and fetch credit notes, allowing your agent to handle adjustments and reconciliations quickly and accurately.
  • Organization data retrieval: Access up-to-date information about your organization, including IDs, currency settings, and compliance details, for seamless financial operations.
  • Efficient accounts review: Instantly pull lists of customers or credit notes to review outstanding balances, statuses, and financial health—all through conversational prompts.

Troubleshooting

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

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

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

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

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

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

3. Why does the Chaser authorization link not work?

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

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

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

The Chaser connection can expire or lose permission.

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

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

Claude can manage the Chaser connection for you.

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

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

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

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

Supported Tools

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

Create Contact Person

Tool to create a new contact person for a customer in Chaser.

Create Invoice

Tool to create a new invoice record in the organization.

Create Overpayment

Creates a new overpayment record in Chaser for tracking customer overpayments.

Delete Contact Person

Tool to delete a contact person from a customer record in Chaser.

Get Contact Person by ID

Tool to get a specific contact person by ID for a customer.

Get Credit Note by ID

Retrieve detailed information for a specific credit note by its ID.

Get Credit Notes

Retrieves a list of credit notes from Chaser.

Get Current Organisation

Tool to retrieve information about the current organisation associated with the API credentials.

Get Customer by ID

Retrieve detailed information for a specific customer by their Chaser customer ID.

Get Customers

Tool to retrieve a list of all customers associated with the organization.

Get Invoice by ID

Tool to retrieve detailed information for a specific invoice by its ID.

Get Organization

Tool to retrieve information about the connected organizations.

Get Overpayment

Retrieve detailed information for a specific overpayment by its ID.

Get Status

Tool to check the status of the Chaser API.

List Contact Persons

Tool to retrieve contact persons for a specific customer.

List Invoices

Tool to retrieve invoices with pagination and filtering.

List Overpayments

Tool to retrieve overpayments from Chaser with pagination and filtering.

Create Credit Note

Creates a new credit note record in Chaser for tracking customer credits.

Create Customer

Tool to create a new customer record in Chaser.

Update Credit Note

Update an existing credit note in Chaser.

Update Customer

Tool to update an existing customer's information using their unique Chaser customer ID.

Update Invoice

Update an existing invoice in Chaser by its internal ID.

Update Contact Person

Tool to update a contact person for a customer in Chaser.

Update Overpayment

Tool to update an overpayment record in Chaser.

Upload Invoice PDF

Upload a PDF file to an existing invoice in Chaser.

Bulk Upsert Customers

Tool to bulk upsert up to 100 customers in a single operation.

Bulk Upsert Contact Persons

Tool to bulk insert or update contact persons for a customer.

Bulk Upsert Credit Notes

Tool to bulk upsert up to 100 credit notes in a single request.

Bulk Upsert Invoices

Tool to bulk upsert up to 100 invoices in a single request.

Bulk Upsert Overpayments

Tool to bulk upsert up to 100 overpayments in Chaser, matching by overpayment_id.

FRAMEWORKS

How to build Chaser MCP Agent with another framework

Claude Code logo

Claude Code

Use Chaser MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Chaser MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Chaser MCP with Claude Agent SDK

Codex logo

Codex

Use Chaser MCP with Codex

OpenClaw logo

OpenClaw

Use Chaser MCP with OpenClaw

Hermes logo

Hermes

Use Chaser MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Chaser MCP with Atomic Agent

Google ADK logo

Google ADK

Use Chaser MCP with Google ADK

LangChain logo

LangChain

Use Chaser MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Chaser MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Chaser MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Chaser MCP with LlamaIndex

CrewAI logo

CrewAI

Use Chaser MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Chaser MCP with Pydantic AI

AutoGen logo

AutoGen

Use Chaser MCP with AutoGen

FAQ

Frequently asked questions

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

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

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