---
title: "Measurement Tick"
method: POST
path: "/api/v1/decision/measure"
tags: ["Decision", "Decision Layer"]
---

# Measurement Tick

`POST /api/v1/decision/measure`

Measurement tick - evaluate optimization outcomes.

Called every 6 hours by GCP Cloud Scheduler.

Flow:
1. Get videos from MEASURE queue whose window has elapsed
2. Fetch current stats from YouTube
3. Evaluate success/failure
4. Update Bayesian posteriors
5. Update creator lifecycle state
6. Move to IDLE (success) or REOPT/PAUSED (failure)

Returns:
    MeasureResponse with evaluation summary

## Query parameters

- `authorization` string, nullable

## Response `200`

Successful Response

- MeasureResponse — Response from measurement endpoint.
  - `success` boolean, required
  - `measured` integer, required
  - `successes` integer, required
  - `failures` integer, required
  - `duration_ms` number, required
  - `results` object[]

## Other responses

- `401` — Unauthorized - Invalid scheduler token
- `422` — Validation Error
- `500` — Internal Server Error

---

[API](https://skmtc.dev/primetime/apis/primetime-media-api.md) · [All operations](https://skmtc.dev/primetime/apis/primetime-media-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/primetime/primetime-media-api/revisions/9da9a9f64e11/schema)