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# SessionDiagnostics

> Structured diagnostic bundle for a session.

Structured diagnostic bundle for a session.

## **Properties**

**`calls`** `readonly CallDiagnosticSummary[]` — required

Quality summary per call. See [`CallDiagnosticSummary`](/docs/browser-sdk/v4/reference/interfaces/call-diagnostic-summary).

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**`capabilities`** `PlatformCapabilities` — required

Platform capabilities detected at construction time. See [`PlatformCapabilities`](/docs/browser-sdk/v4/reference/interfaces/platform-capabilities).

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**`deviceChanges`** `readonly DeviceRecoveryEvent[]` — required

Device changes that occurred during the session. See [`DeviceRecoveryEvent`](/docs/browser-sdk/v4/reference/interfaces/device-recovery-event).

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**`devices`** `object` — required

Current device list snapshot.

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**`devices.audioInput`** `readonly MediaDeviceInfo[]` — required

Snapshot of audio input devices visible to the session. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

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**`devices.audioOutput`** `readonly MediaDeviceInfo[]` — required

Snapshot of audio output devices visible to the session. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

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**`devices.videoInput`** `readonly MediaDeviceInfo[]` — required

Snapshot of video input devices visible to the session. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

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**`events`** `readonly DiagnosticEvent[]` — required

Timeline of significant events during the session. See [`DiagnosticEvent`](/docs/browser-sdk/v4/reference/interfaces/diagnostic-event).

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**`sdkVersion`** `string` — required

SDK version.

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**`userAgent`** `string` — required

Browser/platform user agent string.

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> Structured diagnostic bundle for a session.