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karte.halowerk.com v1 quiet-site
https://karte.halowerk.com/v1/quiet-site
answers 402
Builds a noise context for a site from what surrounds it. Roads within the radius are weighted by class, by recorded speed limit and lane count where present, and by distance with a falloff, because a motorway at eight hundred metres and a residential street at twenty are different problems. Railways are counted separately with their usage class, since freight lines at night dominate what people a
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base
- Pay to
- 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 528 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:22:57.097Z (28d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fkarte.halowerk.com%2Fv1%2Fquiet-site"