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app.heinrichstech.com cdp approval-safety
https://app.heinrichstech.com/v1/cdp/approval-safety
payable, partial
BitBooth Approval Safety: pay 0.05 USDC, get a structured risk assessment of an ERC-20 approve(spender, amount) before you sign it. Catches unlimited approvals to fresh contracts, EOA spenders, copycat tokens, and known-malicious contracts. Built for AI agents that handle wallets and need a programmatic gate before any token approval. Heuristic-based, no SaaS keys, returns within seconds.
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
- $0.05
- Network
- base
- Pay to
- 0xDa2F35d283c42dd60B965322394bc658a5c1769F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 228 ms
- Payment options
- 6 usable of 8
- Last checked
- 2026-08-10T09:14:13.865Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapp.heinrichstech.com%2Fv1%2Fcdp%2Fapproval-safety"