# HALOWERK Cue Gap Index

> HALOWERK Cue Gap Index is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.031/call, status unknown (last checked 2026-10-10).

Computes a subtitle/caption cue gap index for a video or audio file, measuring coverage gaps between caption cues to assess caption quality.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/cue-gap-index?utm_source=zero.xyz
- Price: $0.031/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-cue-gap-index-2631082a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_At70YHqoThyogNRFH2yUy

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-cue-gap-index-2631082a -d '<json body>'
```

Example prompt: Can you run the cue gap index on this video — https://cdn.example.com/episode12.mp4 — and tell me how many subtitle gaps there are and how long they are on average?

## When to prefer this

Use this endpoint when you need a quantitative index of subtitle or caption gaps in a video or audio file, particularly for accessibility audits, broadcast compliance checks, or pre-publish quality reviews. Prefer this over scene-change or transcription endpoints when the specific concern is caption cue continuity rather than speech content or visual cuts.

## Known failure modes

- Invalid or inaccessible media URL returns an error
- Media file exceeds size limit
- Unsupported media format
- No subtitle/caption track found in the media
- Network timeout fetching remote file
- Malformed base64 input

## How this service works

HALOWERK medienwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.

## Output

Returns a JSON object containing the overall cue gap index score, a list of timestamped gaps between subtitle cues, individual gap durations, total gap count, and aggregate coverage statistics for the media file.

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-cue-gap-index-2631082a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from medien.halowerk.com](https://www.zero.xyz/host/medien.halowerk.com/llms.txt)