# PayChasers

```json
{
  "name": "PayChasers",
  "slug": "paychasers",
  "url": "https://composio.dev/toolkits/paychasers",
  "markdown_url": "https://composio.dev/toolkits/paychasers.md",
  "logo_url": "https://logos.composio.dev/api/paychasers",
  "categories": [
    "finance & accounting"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-09-09T05:39:33.143Z"
}
```

![PayChasers logo](https://logos.composio.dev/api/paychasers)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with PayChasers MCP or direct API to send payment reminders, list overdue invoices, update client accounts, and create follow-up sequences through natural language.

## Summary

PayChasers automates payment reminders, client management, and follow-ups for overdue accounts.
Helps reduce late payments and streamlines accounts receivable workflows.

## Categories

- finance & accounting

## Toolkit Details

- Tools: 7

## Images

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

## Authentication

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

## Suggested Prompts

- Send payment reminder for invoice INV-123
- List overdue invoices older than 30 days
- Create follow-up sequence for overdue accounts

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `PAYCHASERS_CREATE_CHASE` | Create Chase | Create a payment chase and potentially send its initial reminder immediately. Using client_email may also create a persistent client. Neither the chase nor the client can be deleted through the API, and FREE accounts allow at most five active chases. |
| `PAYCHASERS_CREATE_CLIENT` | Create Client | Create a persistent PayChasers client from a name, billing email, and notes. PayChasers provides no API endpoint to delete the client afterward. |
| `PAYCHASERS_GET_CURRENT_USER` | Get Current User | Return the connected PayChasers account profile, plan, and default currency; use this to identify the account or check its tier. |
| `PAYCHASERS_LIST_CHASES` | List Chases | Return chases, optionally filtered by exact status and capped by a truncating limit; the API provides no continuation mechanism. |
| `PAYCHASERS_LIST_CLIENTS` | List Clients | Return all clients visible to the connected PayChasers account. |
| `PAYCHASERS_MARK_CHASE_PAID` | Mark Chase Paid | Irreversibly mark a chase as paid and stop its automated follow-ups. Warning: PayChasers provides no API operation to reverse this change. |
| `PAYCHASERS_SEND_FOLLOW_UP` | Send Follow-Up | Immediately send one manual follow-up for a chase in the selected tone. Warning: this sends a message to an external recipient and is limited to 10 sends per hour. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

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

Install the Composio SDK
```python
pip install composio_openai
```

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

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

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

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
```

#### Path 1, Step 3: Execute PayChasers Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute PayChasers actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'List overdue invoices older than 30 days'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'List overdue invoices older than 30 days'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

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

Install the Composio SDK for Python or TypeScript
```python
pip install composio claude-agent-sdk
```

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

#### Path 2, Step 2: Initialize Client and Create Tool Router Session

Import and initialize the Composio client, then create a Tool Router session for PayChasers
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url

# Example: create an API key auth config and link a connected account
auth_config = composio.auth_configs.create(type='api_key', name='paychasers-api-key')
connected_account = composio.connected_accounts.link(auth_config_id=auth_config.id, account_name='paychasers-account')
# Create or reference an MCP instance
mcp_instance = composio.mcp.create('paychasers')
```

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

const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent (Anthropic Claude or Mastra)
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to PayChasers tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('YOUR_SPECIFIC_PROMPT_HERE')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: session.mcp.url,
    headers: {
      'x-api-key': 'your-composio-api-key',
    },
  },
});

const tools = await client.tools();
const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{
    role: 'user',
    content: 'YOUR_SPECIFIC_PROMPT_HERE'
  }],
  maxSteps: 5,
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native PayChasers Integration

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

### 2. Managed Auth

- Built-in OAuth handling with automatic token refresh and rotation
- Central place to manage, scope, and revoke PayChasers 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 PayChasers
- Scoped, least privilege access to PayChasers resources
- Full audit trail of agent actions to support review and compliance

## Use PayChasers with any AI Agent Framework

Choose a framework you want to connect PayChasers with:

- [ChatGPT Work](https://composio.dev/toolkits/paychasers/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/paychasers/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/paychasers/framework/hermes-agent)

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## Frequently Asked Questions

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

Yes, PayChasers 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.

---
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