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app.heinrichstech.com cdp tx-explain
https://app.heinrichstech.com/v1/cdp/tx-explain
payable, partial
BitBooth Tx Explain: pay 0.005 USDC, hand in a Base-family EVM transaction hash, get back a human-readable narrative of what the tx did plus the structured signals it was derived from — 4-byte selector decode of tx.input (transfer / approve / transferFrom) and ERC-20 Transfer event log decode from the receipt. Reverted txs are surfaced explicitly so a counterparty can't pass off a reverted payment
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
It advertises 8 ways to pay and only 6 of them are usable.- Price
- $0.005
- Network
- base
- Pay to
- 0xDa2F35d283c42dd60B965322394bc658a5c1769F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 189 ms
- Payment options
- 6 usable of 8
- Last checked
- 2026-08-10T09:13:57.613Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapp.heinrichstech.com%2Fv1%2Fcdp%2Ftx-explain"