# Use developer test tools
You can use any of our **Dev Tool downloads** during onboarding, implementation, or any phase of testing.
## Find test tools in the Redox dashboard
1. Log in to the dashboard.
2. From the navigation menu, click the **Developer** page.
3. By default, the Sources tab opens. Click the **Dev tool downloads** tab.
4. A list of available downloads appears, grouped by authentication or Redox API type. Download the **test tool(s)** you need.
*Dev tool downloads*
## Which downloads are available
### Redox Authentication
- **Postman collection**: Use the authentication Postman collection to test sending data from one of your configured sources using Postman.
- **Postman environment**: To get the related Postman environment, select an **OAuth API key** from the drop-down. This pre-populates the environment with the OAuth API credentials.
### Platform API
- **OpenAPI**: Validate your app by running this file as a machine-readable reference doc through a validator module or functional testing tool.
- **Redox MCP Server documentation**: This opens a dev docs link about [accessing the Redox MCP server](/how-to-use-redox/access-the-redox-mcp-server).
- **Redox MCP server endpoint**: This is a copyable link (i.e., `https://api.redoxengine.com/mcp`) you need when setting up the Redox MCP server.
### Redox FHIR API
- **Postman API actions collection**: Use the Redox FHIR API actions Postman collection to test sending Redox FHIR resources from one of your sources using Postman. Find the related authentication **Postman environment** on the Developer \> Sources \> OAuth API key \> Edit \> DevTools (Postman) page. [Review available FHIR API actions](/fhir-api-actions).
- **Postman All FHIR resources collection**: Mock out your app’s unique workflow with any of our available Redox FHIR resources in Postman.
- **OpenAPI**: Validate your app by running this file as a machine-readable reference doc through a validator module or functional testing tool.
- **Test patients**: Review and use test patient data for the Redox FHIR sandbox. [Learn more about the FHIR sandbox](/how-to-use-redox/test-with-redox-fhir-sandbox-data).
### Redox Data Model API
- **Postman collection**: Mock out your app’s unique workflow with any of our available Redox JSON data models in Postman. Find the related authentication Postman environment on the Developer \> Sources \> OAuth API key \> Edit \> DevTools (Postman) page.
- **JSON schema**: Validate your app by running this as a machine-readable reference doc through a validator module or functional testing tool.
- **CSV**: Evaluate and map Redox-supported fields to your app’s unique workflow.
- **TypeScript**: If your app uses TypeScript, you can reference our TypeScript types instead of writing your own types for Redox data models.
### Redox Network Onramps
- **Postman collection**: Mock out your app’s unique workflow with the Carequality Interoperability Framework using our available Redox data models in Postman.
- **Postman environment**: Download a Postman environment with the relevant pre-populated variables to use the Carequality Postman collection.