How do I find my Highnote API Key?

Log in to your Highnote dashboard, navigate to **Settings > API**, and you will be able to generate and copy your API key. Make sure to distinguish between Test and Live keys based on your environment.

What environments are supported?

The integration supports both the **Test** (Sandbox) and **Live** (Production) environments. You must specify which one you are connecting to during setup to ensure the correct API endpoints are used.

Can I freeze a card through this integration?

Yes! Use the `update_card_status` tool and set the status to `FROZEN`. This will immediately prevent any new authorizations on that card. You can set it back to `ACTIVE` to unfreeze it.

Is the integration secure for financial data?

Absolutely. The integration uses industry-standard Basic Authentication over HTTPS. Your credentials and financial data are encrypted and stored securely within the Vinkius Cloud infrastructure.

Highnote MCP Server for OpenAI Agents SDK 11 tools — connect in under 2 minutes

Name: Highnote
Availability: InStock
Author: Vinkius

openai.github.io/openai-agents-python/mcp

Built by Vinkius GDPR 11 Tools SDK

The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect Highnote through Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails. no manual schema definitions required.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

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

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MCPServerStreamableHttp(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as mcp_server:

        agent = Agent(
            name="Highnote Assistant",
            instructions=(
                "You help users interact with Highnote. "
                "You have access to 11 tools."
            ),
            mcp_servers=[mcp_server],
        )

        result = await Runner.run(
            agent, "List all available tools from Highnote"
        )
        print(result.final_output)

asyncio.run(main())

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Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Highnote MCP Server

Connect your Highnote card platform to any AI agent and take full control of your card issuance, financial accounts, and ledger through natural conversation.

The OpenAI Agents SDK auto-discovers all 11 tools from Highnote through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Highnote, another analyzes results, and a third generates reports, all orchestrated through Vinkius.

What you can do

Account Holder Oversight — List and retrieve details for individuals and businesses holding accounts in your program.
Card Management — List virtual and physical cards, monitor their operational status, and freeze or close them directly from the chat.
Financial Account Monitoring — Access real-time balances and metadata for all your financial ledger accounts.
Transaction Tracking — List and inspect recent spending and processing transactions with detailed merchant metadata.
Ledger Insights — Retrieve individual ledger entries for reconciliation and audit purposes.
Program Visibility — List all available card products and programs configured in your Highnote account.

The Highnote MCP Server exposes 11 tools through the Vinkius. Connect it to OpenAI Agents SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Highnote to OpenAI Agents SDK via MCP

Follow these steps to integrate the Highnote MCP Server with OpenAI Agents SDK.

Install the SDK

Run pip install openai-agents in your Python environment

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token from cloud.vinkius.com

Run the script

Save the code above and run it: python agent.py

Explore tools

The agent will automatically discover 11 tools from Highnote

Why Use OpenAI Agents SDK with the Highnote MCP Server

OpenAI Agents SDK provides unique advantages when paired with Highnote through the Model Context Protocol.

Native MCP integration via `MCPServerSse`, pass the URL and the SDK auto-discovers all tools with full type safety

Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure

Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate

First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output

Highnote + OpenAI Agents SDK Use Cases

Practical scenarios where OpenAI Agents SDK combined with the Highnote MCP Server delivers measurable value.

Automated workflows: build agents that query Highnote, process the data, and trigger follow-up actions autonomously

Multi-agent orchestration: create specialist agents. one queries Highnote, another analyzes results, a third generates reports

Data enrichment pipelines: stream data through Highnote tools and transform it with OpenAI models in a single async loop

Customer support bots: agents query Highnote to resolve tickets, look up records, and update statuses without human intervention

Highnote MCP Tools for OpenAI Agents SDK (11)

These 11 tools become available when you connect Highnote to OpenAI Agents SDK via MCP:

get_api_profile

Retrieve information about the authenticated API user

get_financial_account

Get detailed balance and metadata for a specific financial account

get_payment_card_details

Get detailed information for a specific card

get_transaction_details

Get detailed metadata for a specific transaction

list_account_holders

Use this to find the unique ID for a person or business. List individuals and businesses who hold accounts in Highnote

list_card_products

List the different card programs (e.g., Consumer, Fleet) available in your Highnote account

list_financial_accounts

List all financial accounts and their current balances

list_financial_transactions

List recent spending and processing transactions

list_ledger_entries

Useful for reconciliation. List individual ledger entries for a financial account

list_payment_cards

Monitor card status and expiration details. List virtual and physical cards issued in your program

update_card_status

Valid statuses: ACTIVE, FROZEN, CLOSED. Change the status of a card (e.g., ACTIVE, FROZEN, CLOSED)

Example Prompts for Highnote in OpenAI Agents SDK

Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with Highnote immediately.

"List all financial accounts and show their current balances."

"Show the last 5 transactions for card ending in 4492."

"Freeze card ID 'card_992' immediately."

Troubleshooting Highnote MCP Server with OpenAI Agents SDK

Common issues when connecting Highnote to OpenAI Agents SDK through the Vinkius, and how to resolve them.

MCPServerStreamableHttp not found

Ensure you have the latest version: pip install --upgrade openai-agents

Agent not calling tools

Make sure your prompt explicitly references the task the tools can help with.

Highnote + OpenAI Agents SDK FAQ

Common questions about integrating Highnote MCP Server with OpenAI Agents SDK.

How does the OpenAI Agents SDK connect to MCP?

Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.