# HALOWERK medienwerk Speaker Cue Crosswalk

> HALOWERK medienwerk Speaker Cue Crosswalk is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.031/call, status unknown (last checked 2026-10-14).

Generates padded cue clips and FFmpeg-ready crosswalk markers around speaker turns at literal keyword positions in timestamped media sources

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/speaker-cue-crosswalk?utm_source=zero.xyz
- Price: $0.031/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-medienwerk-speaker-cue-crosswalk-dd93b433
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oct9-S8WeIJuWslbdLud1

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-medienwerk-speaker-cue-crosswalk-dd93b433 -d '<json body>'
```

Example prompt: In my timestamped transcript, find every speaker turn where the word 'crosswalk' appears literally and give me padded cue clip boundaries plus FFmpeg filter expressions for each one.

## When to prefer this

Choose this endpoint when you need precise, literal-keyword-based speaker cue extraction from timestamped media sources and require FFmpeg-compatible output. It is purpose-built for media pipeline workflows where semantic search is explicitly not wanted — only exact vocabulary matches. Prefer this over generic transcript search tools when you need crosswalk-formatted cue data with padding for direct use in editing or encoding workflows.

## Known failure modes

- Keyword not found in source — returns empty results or 404-style empty match response
- Source transcript not recognized or malformed — returns parsing error
- Literal match fails due to capitalization or punctuation differences — no results returned
- Payment not confirmed via x402 — request rejected before processing
- Source reference invalid or expired — returns source lookup error

## How this service works

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

## Output

Returns JSON containing speaker cue crosswalk data: timestamped boundaries for each speaker turn where the literal keyword was found, padded cue clip start/end points, and FFmpeg filter expressions ready for use in media pipeline processing.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-medienwerk-speaker-cue-crosswalk-dd93b433/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)