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x402toll.com crypto tax-lots
https://x402toll.com/v1/crypto/tax-lots
answers 402
Match a crypto sale against buy lots (FIFO / LIFO / HIFO), returning realized gain/loss split short- vs long-term (IRS >365-day rule) plus the remaining lots.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.25
- Network
- base
- Pay to
- 0x1C9923489CD7D75Dd2f6735c48090b8bD4c7E5a9
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 82 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:33:54.014Z (6d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402toll.com%2Fv1%2Fcrypto%2Ftax-lots"