# HALOWERK buerowerk — Baumarkt Mail Review NDJSON Export

> HALOWERK buerowerk — Baumarkt Mail Review NDJSON Export is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-22).

Accepts a list of email addresses and exports mail review data for a 'baumarkt' (hardware/home improvement store) context in NDJSON format

## Facts

- Endpoint: POST https://buero.halowerk.com/v1/baumarkt/mail/review-ndjson-export?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-buerowerk-baumarkt-mail-review-ndjson-export-726e03d9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tm1W-9n18uUqZy0ZNoO85

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-ndjson-export-726e03d9 -d '<json body>'
```

Example prompt: Export the mail review records for these customer emails from the baumarkt system and give me the results as NDJSON: customer1@example.com, customer2@example.com, customer3@example.com.

## When to prefer this

Use this endpoint when you need to bulk-export mail review data for up to 500 email addresses at once in NDJSON format within the HALOWERK buerowerk (baumarkt) context. It is suited for data pipeline ingestion, analytics, and audit workflows where NDJSON streaming output is preferred. Not suitable for single-record lookups via other methods or for non-email-keyed queries.

## Known failure modes

- Empty or malformed email list returns a 400/validation error
- Email array exceeds 500 items — request rejected
- Individual email strings exceeding 320 characters are rejected
- Payment not fulfilled via x402 protocol returns a 402 Payment Required error
- Emails with no associated review records may return empty NDJSON or be omitted
- Service unavailability returns 5xx errors

## How this service works

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

## Output

Returns a stream of NDJSON (newline-delimited JSON) records, each representing mail review data associated with one of the submitted email addresses. The exact fields per record are not publicly documented but are expected to include email-linked review or feedback information from the baumarkt domain.

## 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-ndjson-export-726e03d9/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)