---
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 | BankBridge 

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

# BankBridge with OpenAI Responses API

Updated Apr 23, 2026·2 min read

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.