# Chaser

```json
{
  "name": "Chaser",
  "slug": "chaser",
  "url": "https://composio.dev/toolkits/chaser",
  "markdown_url": "https://composio.dev/toolkits/chaser.md",
  "logo_url": "https://logos.composio.dev/api/chaser",
  "categories": [
    "finance & accounting"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-10-12T12:43:47.767Z"
}
```

![Chaser logo](https://logos.composio.dev/api/chaser)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Chaser MCP or direct API to automate invoice reminders, track outstanding payments, manage customer communications, and update invoice statuses through natural language.

## Summary

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.

## Categories

- finance & accounting

## Toolkit Details

- Tools: 30

## Images

- Logo: https://logos.composio.dev/api/chaser

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for Chaser.
  - Setup:
    - Configure Api Key credentials for Chaser.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Create a new invoice for customer ABC Ltd
- List all customers with overdue invoices
- Update email address for customer by external ID
- Get credit notes issued in the last month

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CHASER_CREATE_CONTACT_PERSON` | Create Contact Person | Tool to create a new contact person for a customer in Chaser. Requires customer_id and external_id. Use when adding additional contacts to an existing customer account. |
| `CHASER_CREATE_INVOICE` | Create Invoice | Tool to create a new invoice record in the organization. Use after ensuring the customer exists in Chaser. |
| `CHASER_CREATE_OVERPAYMENT` | Create Overpayment | Creates a new overpayment record in Chaser for tracking customer overpayments. Overpayments represent amounts paid by customers in excess of invoice amounts and can be used to offset future invoices. The customer must exist in Chaser before creating an overpayment (use POST /customers first if needed). Valid statuses: DRAFT, SUBMITTED, AUTHORISED, PAID, VOIDED, DELETED. |
| `CHASER_DELETE_CONTACT_PERSON` | Delete Contact Person | Tool to delete a contact person from a customer record in Chaser. Use this when you need to remove a specific contact person associated with a customer. Requires both the customer identifier and the contact person identifier. |
| `CHASER_GET_CONTACT_PERSON` | Get Contact Person by ID | Tool to get a specific contact person by ID for a customer. Use when you need to retrieve detailed information about a contact person associated with a customer in Chaser. |
| `CHASER_GET_CREDIT_NOTE_BY_ID` | Get Credit Note by ID | Retrieve detailed information for a specific credit note by its ID. Accepts both internal Chaser IDs and external credit note IDs (with 'ext_' prefix). Use when you need to fetch complete details of a single credit note. |
| `CHASER_GET_CREDIT_NOTES` | Get Credit Notes | Retrieves a list of credit notes from Chaser. Supports filtering by customer, status, and date range. Returns all credit notes if no filters are specified. |
| `CHASER_GET_CURRENT_ORGANISATION` | Get Current Organisation | Tool to retrieve information about the current organisation associated with the API credentials. Use when you need the organisation ID, currency, timezone, or legal details for the authenticated account. |
| `CHASER_GET_CUSTOMER_BY_ID` | Get Customer by ID | Retrieve detailed information for a specific customer by their Chaser customer ID. Use this after obtaining the customer_id from listing customers or creating a customer. The customer_id is the internal Chaser identifier (e.g., 'cust_abc123'), not the external_id from your source system. |
| `CHASER_GET_CUSTOMERS` | Get Customers | Tool to retrieve a list of all customers associated with the organization. Use when you need to display or process complete customer contact and status information. |
| `CHASER_GET_INVOICE` | Get Invoice by ID | Tool to retrieve detailed information for a specific invoice by its ID. Use when you need to view invoice details, payment status, or associated customer information. |
| `CHASER_GET_ORGANIZATION` | Get Organization | Tool to retrieve information about the connected organizations. Use when you need organization IDs, currency, timezone, or legal details before other operations. |
| `CHASER_GET_OVERPAYMENT` | Get Overpayment | Retrieve detailed information for a specific overpayment by its ID. Use when you need to fetch overpayment details, check remaining credit, or verify overpayment status. Both internal ID (e.g., op_XXX) and external ID with 'ext_' prefix are supported. |
| `CHASER_GET_STATUS` | Get Status | Tool to check the status of the Chaser API. Use when you need to verify if the API is operational before making other requests. |
| `CHASER_LIST_CONTACT_PERSONS` | List Contact Persons | Tool to retrieve contact persons for a specific customer. Returns a paginated list of contact persons with their details. Use when you need to get contact information for a customer's representatives. |
| `CHASER_LIST_INVOICES` | List Invoices | Tool to retrieve invoices with pagination and filtering. Use when you need to fetch invoice records from Chaser with support for various filter criteria including status, amounts, dates, and customer information. |
| `CHASER_LIST_OVERPAYMENTS` | List Overpayments | Tool to retrieve overpayments from Chaser with pagination and filtering. Use when you need to list overpayments, check remaining credits, or filter by customer, amount, currency, or date. |
| `CHASER_POST_CREDIT_NOTE` | Create Credit Note | Creates a new credit note record in Chaser for tracking customer credits. Credit notes represent amounts owed to customers and are used to reduce outstanding invoices. The customer must exist in Chaser before creating a credit note (use POST /customers first). Note: ACTIVE is not a valid status for creating credit notes via API. Valid statuses: SUBMITTED, AUTHORISED, PAID, VOIDED, DELETED. |
| `CHASER_POST_CUSTOMER` | Create Customer | Tool to create a new customer record in Chaser. Use after obtaining Basic Auth credentials. |
| `CHASER_PUT_CREDIT_NOTE` | Update Credit Note | Update an existing credit note in Chaser. All fields are optional. Use this to modify credit note details such as amount, status, or customer association. |
| `CHASER_PUT_CUSTOMER` | Update Customer | Tool to update an existing customer's information using their unique Chaser customer ID. Use after confirming the customer's ID (the 'id' field, not 'externalID'). Example: "Update contactEmailAddress for customer ID cust_abc123." |
| `CHASER_PUT_INVOICE` | Update Invoice | Update an existing invoice in Chaser by its internal ID. Use this to modify invoice status, amounts, dates, payments, or customer associations. Requires the internal Chaser invoice ID (e.g., 'inv_abc123') from invoice creation or retrieval responses. |
| `CHASER_UPDATE_CONTACT_PERSON` | Update Contact Person | Tool to update a contact person for a customer in Chaser. Use when you need to modify contact person details such as name, email, or phone numbers. |
| `CHASER_UPDATE_OVERPAYMENT` | Update Overpayment | Tool to update an overpayment record in Chaser. Use when modifying overpayment details such as remaining credit, status, or other fields. All fields except overpayment_id are optional. |
| `CHASER_UPLOAD_INVOICE_PDF` | Upload Invoice PDF | Upload a PDF file to an existing invoice in Chaser. Use this to attach invoice documentation. The file must be a valid PDF document and is sent as multipart/form-data. |
| `CHASER_UPSERT_BULK_CUSTOMERS` | Bulk Upsert Customers | Tool to bulk upsert up to 100 customers in a single operation. Customers are matched by external_id (or id) for updates. Use when you need to create or update multiple customers efficiently. |
| `CHASER_UPSERT_CONTACT_PERSONS` | Bulk Upsert Contact Persons | Tool to bulk insert or update contact persons for a customer. Use when you need to create or update multiple contact persons in a single request (up to 100). Matching is done by external_id - existing contacts with the same external_id will be updated, new ones will be inserted. |
| `CHASER_UPSERT_CREDIT_NOTES_BULK` | Bulk Upsert Credit Notes | Tool to bulk upsert up to 100 credit notes in a single request. Matches by credit_note_id (or id). Use when you need to create or update multiple credit notes efficiently in Chaser. |
| `CHASER_UPSERT_INVOICES` | Bulk Upsert Invoices | Tool to bulk upsert up to 100 invoices in a single request. Invoices are matched by invoice_id for updates or created if not found. Use when you need to create or update multiple invoices efficiently. |
| `CHASER_UPSERT_OVERPAYMENTS_BULK` | Bulk Upsert Overpayments | Tool to bulk upsert up to 100 overpayments in Chaser, matching by overpayment_id. Use when you need to create or update multiple overpayment records in a single operation. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
```python
pip install composio composio_openai openai
```

```typescript
npm install @composio/core @composio/openai openai
```

#### Path 1, Step 2: Create a Composio session

Initialize Composio with the OpenAI Responses provider and create a session scoped to Chaser
```python
import json
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
client = OpenAI()

session = composio.create(user_id="your-user-id", toolkits=["chaser"])
tools = session.tools()
```

```typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["chaser"] });
const tools = await session.tools();
```

#### Path 1, Step 3: Run Chaser tools with your agent

Send a request, execute the Chaser tool calls through the session, and print the final answer
```python
response = client.responses.create(
    model="gpt-5.6-sol",
    tools=tools,
    input=[{"role": "user", "content": "Send invoice reminders to all overdue customers this week"}],
)

while True:
    tool_calls = [o for o in response.output if o.type == "function_call"]
    if not tool_calls:
        break
    results = composio.provider.handle_tool_calls(response=response, session=session)
    response = client.responses.create(
        model="gpt-5.6-sol",
        tools=tools,
        previous_response_id=response.id,
        input=[
            {"type": "function_call_output", "call_id": call.call_id, "output": json.dumps(results[i])}
            for i, call in enumerate(tool_calls)
        ],
    )

print(response.output_text)
```

```typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Send invoice reminders to all overdue customers this week" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK and your agent framework
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
```

#### Path 2, Step 2: Create a session with MCP enabled

Create a session scoped to Chaser and read its MCP URL and headers
```python
from composio import Composio

composio = Composio()
session = composio.create(user_id="your-user-id", toolkits=["chaser"], mcp=True)
```

```typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["chaser"],
  mcp: true,
});
```

#### Path 2, Step 3: Connect your agent to the MCP server

Pass the session's MCP URL and headers to your agent and run a Chaser request
```python
import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions, AssistantMessage, TextBlock

options = ClaudeAgentOptions(
    mcp_servers={
        "composio": {
            "type": "http",
            "url": session.mcp.url,
            "headers": session.mcp.headers,
        }
    },
    system_prompt="You are a helpful assistant with access to Chaser tools.",
    tools=[],
    allowed_tools=["mcp__composio__*"],
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query("Send invoice reminders to all overdue customers this week")
        async for message in client.receive_response():
            if isinstance(message, AssistantMessage):
                for block in message.content:
                    if isinstance(block, TextBlock):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Send invoice reminders to all overdue customers this week",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
```

## Why Use Composio?

### 1. AI Native Chaser Integration

- Supports both Chaser MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Chaser data

### 2. Managed Auth

- Built-in API key handling with secure storage
- Central place to manage, scope, and revoke Chaser access
- Per user and per environment credentials instead of hard-coded keys

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Chaser
- Scoped, least privilege access to Chaser resources
- Full audit trail of agent actions to support review and compliance

## Use Chaser with any AI Agent Framework

Choose a framework you want to connect Chaser with:

- [Claude Code](https://composio.dev/toolkits/chaser/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/chaser/framework/claude-cowork)
- [OpenAI Agents SDK](https://composio.dev/toolkits/chaser/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/chaser/framework/claude-agents-sdk)
- [Codex](https://composio.dev/toolkits/chaser/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/chaser/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/chaser/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/chaser/framework/atomic-agent)
- [Google ADK](https://composio.dev/toolkits/chaser/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/chaser/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/chaser/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/chaser/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/chaser/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/chaser/framework/crew-ai)
- [Pydantic AI](https://composio.dev/toolkits/chaser/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/chaser/framework/autogen)

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- [Altoviz](https://composio.dev/toolkits/altoviz) - Altoviz is a cloud-based billing and invoicing platform for businesses. It streamlines online payments, expense tracking, and customizable invoice management.
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## Frequently Asked Questions

### Do I need my own developer credentials to use Chaser with Composio?

Yes, Chaser requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)