# HALOWERK buerowerk — Baumarkt Mail Review CSV Export

> HALOWERK buerowerk — Baumarkt Mail Review CSV Export is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-23).

Accepts a list of email addresses and exports a CSV of review-related mail data for a Baumarkt (hardware/home-improvement store) context

## Facts

- Endpoint: POST https://buero.halowerk.com/v1/baumarkt/mail/review-csv-export?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-buerowerk-baumarkt-mail-review-csv-export-6a50cf41
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UASqKptLK7WqjEvH-X_w9

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-buerowerk-baumarkt-mail-review-csv-export-6a50cf41 -d '<json body>'
```

Example prompt: Can you export the review email data for these customers as a CSV — here's the list of up to 500 email addresses: [user@example.com, customer2@example.com, ...]? I need it for our Baumarkt review campaign.

## When to prefer this

Use this endpoint when you need to bulk-export review-related email records for a list of customer email addresses specifically in a Baumarkt (hardware/home-improvement retail) context, and when you are operating in an x402 micropayment environment on Base Mainnet with USDC.

## Known failure modes

- Empty or malformed email array returns a validation error
- Email strings exceeding 320 characters are rejected
- Array exceeding 500 items is rejected
- Invalid email format may cause processing errors or silent skips
- Payment failure via x402 protocol prevents endpoint access
- No matching review data for submitted emails may return empty CSV

## How this service works

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

## Output

A JSON response containing a CSV export of review-related mail data for the submitted list of email addresses, covering review campaign or outreach records in a Baumarkt (hardware/home-improvement store) context.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "emails": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 320,
    "minLength": 1
   },
   "maxItems": 500,
   "minItems": 1
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-buerowerk-baumarkt-mail-review-csv-export-6a50cf41/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from buero.halowerk.com](https://www.zero.xyz/host/buero.halowerk.com/llms.txt)