How to Use the Billsby MCP in OpenAI Agents SDK

Q: How does caching work when fetching Billsby plans with OpenAI Agents SDK?

Set cacheToolsList=True during your streamable HTTP setup to avoid redundant schema lookups. This speeds up tool discovery when your agent frequently calls listplans or listaddons across multiple user sessions.

Run safe, multi-agent subscription workflows with OpenAI Agents SDK and the Billsby MCP Server.

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Connect Billsby MCP to OpenAI Agents SDK

Create your Vinkius account to connect Billsby to OpenAI Agents SDK and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Billsby with OpenAI Agents SDK

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Validate billing changes before they hit production

The Billsby MCP Server exposes direct billing operations like `create_customer` to your agent pipeline. OpenAI's built-in guardrails evaluate these actions before execution, keeping your production database clean. You write the safety rules, and the SDK enforces them. If a customer tries to upgrade, your agent checks their status with `get_customer` first. The system blocks unauthorized changes at the SDK level, preventing accidental plan overrides.

Run multi-agent subscription handoffs

Specialized agents coordinate using `get_subscription` and `get_customer_subscriptions` to resolve complex billing tickets. One agent handles simple status checks, then hands off to a billing agent when a plan change is needed. This keeps your agent logic modular and easy to debug. Your support agent queries `list_plans` to find available options. Once the user selects a tier, the agent hands the task to a provisioning specialist to finalize the update.

Trace billing API calls in OpenAI Agents SDK

The Billsby MCP Server sends clean, structured data back to your OpenAI dashboard for complete execution tracing. When your agent calls `list_invoices` to find a missing payment, you see the exact payload. No more guessing why a tool call failed. Debugging raw JSON payloads is a waste of your time. This integration lets you trace every step from the initial user prompt to the final `list_products` lookup in a single UI.

Setup guide

Set up Billsby MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Billsby tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Billsby tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Billsby tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Billsby Agent",
            instructions="You have access to Billsby tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about Billsby MCP in OpenAI Agents SDK

Install the SDK using pip, then initialize the streamable HTTP server transport pointing to your Vinkius endpoint. Pass this server instance directly into your Agent constructor using the `mcp_servers` list. The agents auto-discover all ten billing tools immediately.

Yes, you control tool exposure by defining strict system instructions or using specialized agent handoffs. For example, you can restrict your frontend support agent to `get_subscription` while routing `create_customer` calls to a secure administrative agent.

Set `cacheToolsList=True` during your streamable HTTP setup to avoid redundant schema lookups. This speeds up tool discovery when your agent frequently calls `list_plans` or `list_addons` across multiple user sessions.

The SDK captures the error and passes the raw API response back to your agent. Your agent reads the error details, allowing it to explain the issue to the user or retry the lookup automatically.

Vinkius hosts the server in a secure, ephemeral V8 isolate sandbox that never logs your raw payload data. Your API keys and customer invoices are encrypted at rest, ensuring that only your authorized OpenAI agents can access sensitive billing details.

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