# HALOWERK Baumarkt Media Snapshot Compare

> HALOWERK Baumarkt Media Snapshot Compare 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).

Compares snapshots of literal index media research experiments in the Baumarkt (hardware/DIY store) domain, returning a structured JSON diff or comparison result.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/research-experiment-literal-index/snapshot-compare?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-baumarkt-media-snapshot-compare-b6c3193f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uLuJb1s8tr0AO7iSdz-cs

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-baumarkt-media-snapshot-compare-b6c3193f -d '<json body>'
```

Example prompt: Can you compare the latest snapshot of the baumarkt literal media research index against the previous one and show me what changed?

## When to prefer this

Use this endpoint when you need to programmatically compare two states of a baumarkt media research experiment's literal index — particularly useful for monitoring drift, validating stability, or auditing content changes over time in a German-language hardware/DIY retail media context. Prefer this over general diff tools when the data is specifically from HALOWERK's baumarkt media index pipeline.

## Known failure modes

- Invalid or missing snapshot identifiers returns an error
- Snapshot not found if the referenced index state does not exist
- Payment failure via x402 if USDC balance is insufficient on Base Mainnet
- Malformed request body returns a 400-level error
- Comparison unavailable if the index has not been populated

## How this service works

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

## Output

A structured JSON object containing the comparison result between two snapshots of the baumarkt literal media research experiment index, including differences, additions, removals, and any computed delta metrics.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-baumarkt-media-snapshot-compare-b6c3193f/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)