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research.halowerk.com v1 patent-prior-art
https://research.halowerk.com/v1/patent-prior-art
answers 402
Collects up to 15 recent EP publication candidates from a caller-supplied IPC class through the official EPO Linked Open Data endpoint, embeds concept and title/abstract text locally with nomic-embed-text, and returns the closest matches. The IPC scope prevents a misleading full-corpus keyword scan that times out at the source. Coverage is European publications only and candidate retrieval is not
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 613 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:23:32.045Z (32d ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fresearch.halowerk.com%2Fv1%2Fpatent-prior-art"