# HALOWERK medienwerk — Sales Pricing Literal Index Snapshot Compare

> HALOWERK medienwerk — Sales Pricing Literal Index 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 2026-10-10).

Compares two snapshots of a sales pricing literal index from the Baumarkt (hardware/DIY retail) domain, returning structured differences between the two states.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/baumarkt/media/sales-pricing-literal-index/snapshot-compare?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-medienwerk-sales-pricing-literal-index-snapshot-compare-a3f2b411
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pVEaS3K_QPOihPEh46qHI

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-sales-pricing-literal-index-snapshot-compare-a3f2b411 -d '<json body>'
```

Example prompt: Compare my two Baumarkt sales pricing literal index snapshots — snapshot from last Monday versus the one from yesterday — and show me what prices and entries changed between them.

## When to prefer this

Choose this endpoint when you need to detect and quantify pricing changes in a Baumarkt (German hardware/DIY retail) sales pricing literal index between two specific points in time. Prefer it over generic diff tools when the domain is specifically retail pricing indexes with literal keyword structure, and when you need a structured JSON diff rather than a raw text comparison.

## Known failure modes

- Invalid or missing snapshot identifiers returns an error
- Snapshot IDs do not exist or have expired — returns not found error
- Malformed request body causes 400 bad request
- Payment not fulfilled via x402 protocol causes 402 payment required
- Rate limiting or quota exceeded returns 429
- Snapshots from incompatible index versions may return comparison errors

## How this service works

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

## Output

A structured JSON response containing the computed differences between two Baumarkt sales pricing literal index snapshots, including added, removed, and modified pricing entries with their respective values and metadata.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-medienwerk-sales-pricing-literal-index-snapshot-compare-a3f2b411/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)