---
title: "Activate Kugelturn"
method: POST
path: "/v1/license/kugelturn/activate"
tags: ["license"]
---

# Activate Kugelturn

`POST /v1/license/kugelturn/activate`

Issue one short-lived grant for an entitled protected model artifact.

Authenticates with the customer's ordinary API key; activation charges
the prepaid audio headroom to the org's credit wallet (402 on rejection).

## Headers

- `X-API-Key` string, required

## Request body

- KugelTurnActivateRequest
  - `instance_id` string, required
  - `model_id` string, required
  - `artifact_version` string, nullable

## Response `200`

Successful Response

- KugelTurnActivateResponse
  - `activation_id` string, required
  - `instance_id` string, required
  - `model_id` string, required
  - `artifact_version` string, required
  - `artifact_download_url` string, required
  - `artifact_size_bytes` integer, nullable
  - `manifest_sha256` string, required
  - `model_key` string, required
  - `usage_key` string, required
  - `offline_token` string, required
  - `public_key_pem` string, required
  - `grant_expires_at_ms` integer, required
  - `authorized_calls` integer, required
  - `authorized_audio_ms` integer, required
  - `acknowledged_sequence` integer, required
  - `cumulative_calls` integer, required
  - `cumulative_audio_ms` integer, required
  - `cumulative_context_chars` integer, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/kugelaudio/apis/kugelaudio-tts-api.md) · [All operations](https://skmtc.net/kugelaudio/apis/kugelaudio-tts-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/kugelaudio/kugelaudio-tts-api/revisions/9ecca94b0377/schema)