Create a Mock Server

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Enable the beta flag

1. Open Preferences.
2. Go to Beta.
3. Turn on Mock Server.

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Create from a collection (saved examples)

1. Open the collection.
2. In the sidebar, expand Mock Servers and click the + icon to create a new mock server.
3. Enter a Name.
4. Keep Link to a collection or API spec checked, select Collection, pick the collection, then click Create.
5. On the dashboard, click Sync with Examples. Every saved example becomes a mock response (method, path, status, headers, and body).
6. Click Start Server to start the mock server on the saved port. If the port is already in use, change it under Mock Server Settings (gear icon) → Advanced settings.

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Create from an OpenAPI spec

1. Load the spec under API Specs in the sidebar (if it is not already there).
2. Create a mock server, keep Link to a collection or API spec checked, select API Spec, pick the spec, then click Create.
3. On the dashboard, click Generate from API Spec. Each operation and response status becomes a mock response; bodies are derived from the schema where possible.
4. Click Start Server to start the mock server on the saved port. If the port is already in use, change it under Mock Server Settings (gear icon) → Advanced settings.

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Create a standalone (manual) mock

1. Click + under Mock Servers.
2. Enter a Name.
3. Turn off Link to a collection or API spec.
4. Optionally set Port and Response delay under Advanced settings.
5. Click Create, then add responses from the Responses tab.

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Where Bruno store mock servers

workspace
└── mocks
    └── <mock-server-one.yml>
    └── <mock-server-two.yml>
    └── ...

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Next steps

• Run a mock server — start, stop, and manage mock servers from the dashboard