> For the complete documentation index, see [llms.txt](https://docs.sprinto.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sprinto.com/api-references/sprinto-api-playground/set-up-api-playground.md).
# Set up API Playground
The Sprinto API Playground is a browser-based GraphQL explorer that lets you interact with the Sprinto Developer API without installing any client libraries or GraphQL tools.
You can use the playground to explore the API schema, test queries and mutations, and validate responses in real time.
The API Playground must be configured each time your browser session expires.
***
### Prerequisites
Before setting up the API Playground, ensure that you have:
* A valid Sprinto account with **administrator privileges**
* A **valid API key** generated from the Sprinto application
For detailed instructions, refer to the guide on generating an API key.
***
### Access the API Playground
Open the API Playground in your preferred web browser based on your data residency region:
* **United States:** Sprinto API Playground
* **Europe:** Sprinto API Playground
* **India:** Sprinto API Playground
***
### Configure the API Playground
Follow these steps to configure the API Playground for your session.
#### Step 1: Open connection settings
From the top bar of the API Playground, click the **Settings** icon to open the **Connection settings** panel.
***
#### Step 2: Add shared headers
In the **Shared headers** section, add the following key–value pairs:
Attribute
Value
api-key
<your API key>
apollo-require-preflight
true
These headers authenticate your requests and ensure proper schema loading.
***
#### Step 3: Save the configuration
Click **Save** to apply the changes.
***
### Introspect the schema
Once the headers are saved:
* The API automatically introspects the schema, or
* You can manually trigger introspection by clicking **Refetch Schema** from the explorer page
Successful introspection loads the full API schema into the playground.
***
### Verify successful setup
After introspection completes, the playground displays the available root types, grouped into:
* **Query**
* **Mutation**
This confirms that the API Playground is correctly configured and ready for use.
***
### What you can do next
Once the API Playground is set up, you can:
* Browse available queries and mutations
* Inspect required arguments and response types
* Test paginated queries
* Validate mutations before implementing them in your application
***
### Next steps
After setting up the API Playground, you may want to:
* Make your first API call using the playground
* Review the API structure to understand available operations
* Learn how pagination works for large datasets
---
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