---
title: "BankBridge with OpenAI Responses API"
slug: bankbridge-with-responses-api
url: https://bankbridge.money/guides/bankbridge-with-responses-api
category: how-to
published: 2026-04-23
updated: 2026-04-23
---
# BankBridge with OpenAI Responses API

> Add BankBridge to OpenAI Responses API once, then ask it about your real bank accounts, transactions, subscriptions, and investment holdings. Every question live-fetches in real time — nothing is cached. $5/mo per connected bank.

BankBridge with OpenAI Responses API — setup + prompts  

[How-to](/guides/how-to)

# BankBridge with OpenAI Responses API

Updated Apr 23, 2026·2 min read

Direct answer: Add BankBridge to OpenAI Responses API once, then ask it about your real bank accounts, transactions, subscriptions, and investment holdings. Every question live-fetches in real time — nothing is cached. $5/mo per connected bank.

## Setup

Paste the config below into `POST /v1/responses`. Swap the placeholder key for your real `bbk_` key from [your dashboard](/dashboard/settings).

```
{
  "model": "gpt-4.1",
  "input": "How much did I spend on restaurants last month?",
  "tools": [
    {
      "type": "mcp",
      "server_label": "bankbridge",
      "server_url": "https://bankbridge.money/api/mcp",
      "headers": {
        "Authorization": "Bearer bbk_your_api_key_here"
      },
      "require_approval": "never"
    }
  ]
}
```

The [full doc page](/docs/responses-api) for OpenAI Responses APIauto-fills your real key when you’re signed in.

## Three prompts to try

-   > “List my bank accounts and current balances.”
    
-   > “How much did I spend on food this month?”
    
-   > “What are my recurring subscriptions?”
    

## If it doesn’t work

Check the [OpenAI Responses API doc page](/docs/responses-api) for the Troubleshooting section. 90% of first-time failures are either a missing `Bearer` prefix (note the space) or a placeholder key that didn’t get replaced with a real one.