> For the complete documentation index, see [llms.txt](https://devdocs.olisystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://devdocs.olisystems.com/chemistry-model-files/chembuilder-api/chembuilder-query/databank-query.md).

# Databank Query

When dealing with species not readily available in public databanks within a thermodynamic framework, users can turn to a private databank. The databank query assists users in verifying if the species is supported by the private databank linked to a thermodynamic framework. Additionally, since the list of species in a databank changes over time and users may struggle to keep track of versions and associated species, the databank query streamlines the process by offering an up-to-date list of all species in both public and private databanks.

```json
{ 
    "params":{ 
        "thermodynamicFramework": "Aqueous (H+ ion)",
        "privateDatabanks": ["COR", "CER"]
    }
}
```

<table><thead><tr><th width="273.76195506047435" align="center">params</th><th width="130" align="center">required </th><th width="141" align="center">type</th><th>Description</th></tr></thead><tbody><tr><td align="center">thermodynamicFramework</td><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2714">✔️</span></td><td align="center">String</td><td>The name of thermodynamic framework (e.g. Aqueous (H+ ion))</td></tr><tr><td align="center">privateDatabanks</td><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2714">✔️</span></td><td align="center">Array of String</td><td>The array of private data bank codes (e.g. "COR" and "CER")</td></tr></tbody></table>

{% hint style="info" %}
The private databank is an optional field. If a user lists the private databanks, all the species contained in these databanks will be displayed in the output.
{% endhint %}

{% hint style="info" %}
The valid code representing a private databank can be accessed using [Query Output Results](/chemistry-model-files/chembuilder-api/chembuilder-query/query-output-results.md)
{% endhint %}

### Response (status=SUCCESS)

If no run-time [errors ](/chemistry-model-files/chembuilder-api/supporting-information-for-chembuilder/chembuilder-errors.md)are encountered, the [Query output](/chemistry-model-files/chembuilder-api/chembuilder-query/query-output-results.md) with the requested contents will be available for users to view.