> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tesouro.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Query available sponsor banks

> Query available sponsor banks and their associated BINs to select the right financial institution for your acceptor application.

Sponsor banks are the financial institutions that back your acceptor's payment processing. Query them before creating an acceptor application to find the right bank and BIN.

<Info>
  Each sponsor bank can have multiple BINs — the identifiers that route card transactions to the
  issuing bank. You'll need a `sponsorBankId` when creating an acceptor application.
</Info>

<Callout icon="clapperboard-play" color="#6938EF" type="scenario">
  **Scenario**

  A developer at Clearpath Payments is creating an acceptor application for Maple Street Coffee and needs to pick the right sponsor bank and BIN.
</Callout>

Use the `sponsorBanks` query to list available sponsor banks and their BINs.

<RequestExample>
  ```graphql Operation lines theme={null}
  query SponsorBanks {
    sponsorBanks {
      sponsorBankId
      name
      bins {
        descriptor
        id
      }
    }
  }
  ```

  ```json Variables lines theme={null}
  {}
  ```
</RequestExample>

<ResponseExample>
  ```json Response lines expandable theme={null}
  {
    "data": {
      "sponsorBanks": [
        {
          "sponsorBankId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
          "name": "Acme Financial Group",
          "bins": [
            {
              "descriptor": "Acme Visa Credit",
              "id": "c7d8e9f0-a1b2-4c3d-8e5f-6a7b8c9d0e1f"
            },
            {
              "descriptor": "Acme Mastercard Debit",
              "id": "d8e9f0a1-b2c3-4d5e-9f6a-7b8c9d0e1f2a"
            }
          ]
        },
        {
          "sponsorBankId": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
          "name": "Pinnacle Banking Corporation",
          "bins": [
            {
              "descriptor": "Pinnacle Visa Debit",
              "id": "e9f0a1b2-c3d4-4e5f-a6b7-8c9d0e1f2a3b"
            },
            {
              "descriptor": "Pinnacle Mastercard Credit",
              "id": "f0a1b2c3-d4e5-4f6a-b7c8-9d0e1f2a3b4c"
            }
          ]
        }
      ]
    }
  }
  ```
</ResponseExample>