How to Use the Memberstack MCP in OpenAI Agents SDK

Q: How do I register the Memberstack MCP tools in the OpenAI Agents SDK?

You install openai-agents and spin up the MCPServerStreamableHttp client pointing to the Vinkius endpoint. Pass this server instance in the mcpservers list when initializing your agent, and the tools are auto-discovered immediately.

Let your OpenAI Agents SDK run Memberstack auth checks, look up membership tiers, and resolve billing status on the fly.

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Connect Memberstack MCP to OpenAI Agents SDK

Create your Vinkius account to connect Memberstack 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 Memberstack with OpenAI Agents SDK

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Target specific user plans inside OpenAI Agents SDK

Your OpenAI Agents SDK agent needs to know what a Memberstack user is allowed to access before it performs an action. By exposing the Memberstack MCP server to your agent, it can hit `get_member_plans` and `get_plan` to inspect active tiers in the middle of a live run. This keeps your OpenAI Agents SDK from performing unauthorized tasks without you writing manual routing code. The OpenAI Agents SDK handles this by auto-discovering these Memberstack tools during runtime. If an agent needs to check if a caller has a premium subscription, it queries the live Memberstack API directly, gets the plan ID, and decides whether to proceed or hand off to a different agent.

Fast member lookups during live agent runs

When a user messages your chatbot, the OpenAI Agents SDK needs to find their Memberstack account instantly. This MCP server lets your agent use `search_members` to query Memberstack by email or `get_member` for direct ID lookups. You get raw, structured user data injected right into the agent context. In the OpenAI Agents SDK, you run this using `MCPServerStreamableHttp` to keep connections open and fast. The agent handles the search, reads the custom metadata, and tailors its response based on the exact user profile it pulled.

Manage discounts and custom fields on demand

If your OpenAI Agents SDK handles support, it can pull active promotions with `list_promotions` or inspect discount codes using `list_coupons`. It can also look up user properties via `list_custom_fields` to see custom onboarding data. This means your OpenAI Agents SDK setup can handle complex billing questions without hitting a custom database. It queries Memberstack directly, matches the coupon to the user's request, and replies with accurate pricing details.

Setup guide

Set up Memberstack 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 Memberstack tools at runtime.
3

Create your Agent

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

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Memberstack 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="Memberstack Agent",
            instructions="You have access to Memberstack 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 Memberstack MCP in OpenAI Agents SDK

You install `openai-agents` and spin up the `MCPServerStreamableHttp` client pointing to the Vinkius endpoint. Pass this server instance in the `mcp_servers` list when initializing your agent, and the tools are auto-discovered immediately.

No, this specific server is read-only for safety. Your agent can run `get_member` and `list_plans` to check statuses, but it cannot modify member details or delete subscriptions, keeping your billing data safe.

The SDK relies on your Vinkius proxy to handle connection pooling. For heavy workloads, configure `cacheToolsList=True` in your Python code to prevent unnecessary schema lookups on the Memberstack API.

Yes, you can filter the tool list or use specialized agent handoffs in the SDK. This ensures only your billing agent can call `list_coupons`, while your support agent is limited to `search_members`.

Your sensitive member emails and custom metadata are protected via Vinkius's zero-trust sandboxed environment. The SDK connects to Vinkius using an ephemeral session token, ensuring your API keys never leak to the public internet or raw LLM outputs.

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