# Billsby

```json
{
  "name": "Billsby",
  "slug": "billsby",
  "url": "https://composio.dev/toolkits/billsby",
  "markdown_url": "https://composio.dev/toolkits/billsby.md",
  "logo_url": "https://logos.composio.dev/api/billsby",
  "categories": [
    "finance & accounting"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-08-19T06:37:20.345Z"
}
```

![Billsby logo](https://logos.composio.dev/api/billsby)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Billsby MCP or direct API to manage customers, inspect subscriptions, review invoices, and update billing plans through natural language.

## Summary

Billsby is a subscription billing platform for managing customers, subscriptions, invoices, products, plans, usage counters, add-ons, and allowances.
It helps SaaS and subscription teams automate billing operations without building complex billing logic from scratch.

## Categories

- finance & accounting

## Toolkit Details

- Tools: 10

## Images

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

## Authentication

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

## Suggested Prompts

- List active subscriptions expiring this month
- Find overdue invoices by customer
- Update allowance for enterprise plan

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `BILLSBY_CREATE_CUSTOMER` | Create Customer | Create a Billsby customer without a subscription or payment card. This does not start recurring billing. |
| `BILLSBY_GET_CUSTOMER` | Get Customer | Get billing, contact, payment-status, and account details for one Billsby customer. |
| `BILLSBY_GET_SUBSCRIPTION` | Get Subscription | Get billing schedule, customer, product, plan, pricing, status, and revenue details for one Billsby subscription. |
| `BILLSBY_GET_SUBSCRIPTION_SHIPPING_ADDRESS` | Get Subscription Shipping Address | Get the shipping address associated with one Billsby subscription. |
| `BILLSBY_LIST_CUSTOMERS` | List Customers | Return one page of customers for the connected Billsby company, optionally filtered by a partial customer name. |
| `BILLSBY_LIST_CUSTOMER_SUBSCRIPTIONS` | List Customer Subscriptions | List all subscriptions belonging to one Billsby customer. |
| `BILLSBY_LIST_PRODUCT_PLANS` | List Product Plans | List the plans and billing cycles configured for one Billsby product. |
| `BILLSBY_LIST_PRODUCTS` | List Products | Return one page of Billsby products, optionally filtered by name or visibility. |
| `BILLSBY_LIST_SUBSCRIPTIONS` | List Subscriptions | Return one page of company subscriptions with optional status, trial, product, plan, and ordering filters. |
| `BILLSBY_UPDATE_CUSTOMER` | Update Customer | Replace the editable contact and billing-address details for an existing Billsby customer. Supply the complete desired values, not a partial patch. |

## 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 Billsby Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Billsby actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'List all active Billsby subscriptions created this month'
  }]
)
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 all active Billsby subscriptions created this month'
  }],
});
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 Billsby
```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
```

```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 Billsby tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Find overdue Billsby invoices and summarize affected customers')
        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: 'Find overdue Billsby invoices and summarize affected customers'
  }],
  maxSteps: 5,
});

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

## Why Use Composio?

### 1. AI Native Billsby Integration

- Supports both Billsby MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution across customers, subscriptions, invoices, products, plans, add-ons, allowances, and usage counters
- Rich coverage for reading, writing, and querying your Billsby billing data without bespoke integration code

### 2. Managed Auth

- Secure API key handling so your agents don't need hard-coded Billsby credentials
- Central place to manage, scope, and revoke Billsby access
- Per user and per environment credentials for safer billing automation

### 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 which Billsby billing action ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Billsby
- Scoped, least privilege access to sensitive billing resources like customers, invoices, and subscriptions
- Full audit trail of agent actions to support finance review and compliance

## Use Billsby with any AI Agent Framework

Choose a framework you want to connect Billsby with:

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

## Related Toolkits

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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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- [Coupa](https://composio.dev/toolkits/coupa) - Coupa is a business spend management platform for procurement, invoicing, and expenses. It helps organizations streamline purchasing, control costs, and gain complete visibility over financial operations.
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- [Eagle doc](https://composio.dev/toolkits/eagle_doc) - Eagle doc is an AI-powered OCR API for invoices and receipts. It delivers fast, reliable, and accurate document data extraction for seamless automation.
- [Elorus](https://composio.dev/toolkits/elorus) - 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.

## Frequently Asked Questions

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

Yes, Billsby requires you to configure your own API key. 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)