---
title: "VoiceBlender Streaming Interface (VSI)"
method: GET
path: "/vsi"
tags: ["Events"]
---

# VoiceBlender Streaming Interface (VSI)

`GET /vsi`

Upgrades to a WebSocket connection and streams all events in real-time as JSON text frames. The JSON shape is identical to webhook payloads. The server sends a `{"type":"connected"}` message on connect, followed by events and periodic `{"type":"ping"}` keepalives. Clients may send `{"type":"pong"}` or `{"type":"stop"}` to close gracefully. Unknown message types receive an error response with the echoed `request_id` (reserved for future commands).

## Other responses

- `101` — WebSocket upgrade successful. Server sends events as JSON text frames.

---

[API](https://skmtc.net/voiceblender/apis/voiceblender-api.md) · [All operations](https://skmtc.net/voiceblender/apis/voiceblender-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/voiceblender/voiceblender-api/revisions/c951ca5dcd08/schema)