# Species Query

<mark style="color:green;">`POST`</mark> `https://api.olisystems.com/engine/chemistry/query/species`

#### Headers

| Name | Type   | Description |
| ---- | ------ | ----------- |
|      | String |             |

The Species query method can clarify whether a species exists in the databank of an associated thermodynamic framework and whether the entered name of the species is valid or not, addressing potential user uncertainties.

### Request Payload&#x20;

```json
{ 
    "params":{ 
        "thermodynamicFramework": "MSE (H3O+ ion)",
      }
}
```

<table><thead><tr><th width="266.3333333333333" align="center">Keyword in JSON</th><th align="center">Required </th><th align="center">Type</th></tr></thead><tbody><tr><td align="center"><strong>params</strong></td><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2714">✔️</span></td><td align="center">JSON Object</td></tr><tr><td align="center"><strong>thermodynamicFramework</strong></td><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2714">✔️</span></td><td align="center">String</td></tr></tbody></table>

{% hint style="info" %}
Only the "thermodynamicFramework" parameter is needed here. All public and private databank information for this thermodynamic framework will be displayed in the output.
{% 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.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://devdocs.olisystems.com/chemistry-model-files/chembuilder-api/chembuilder-query/species-query.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.