attester.dev
Base · payout 0x57407d691f755caa107647718f3582a8a87467dd
Answers HTTP 402
1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-09-29
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
no x402-style payments observed in the last 7 days (Base, exact read)
window ended 2026-10-05
All USDC received at this payout address: $0.00 (includes payments that are not x402)
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0x57407d691f755caa107647718f3582a8a87467dd | 2 | 1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-29 | no x402-style payments observed in the last 7 days (Base, exact read) |
- Hosts
- attester.dev
- Listings
- 2 registered in the x402 catalogue
- Price range
- $0.0020 to $0.0050 per call, as registered
- Categories (auto)
- Inference (1), Other (1)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0x57407d…7467dd to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Registrations · 2
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://attester.dev/v1/package/exists Deterministic package existence for PyPI and npm, built from real published artifacts (never LLM guesses). Negative answers and typosquat-adjacency flags carry signed proof. $0.002 USDC per check. | Base | Inference | $0.002 | 2026-09-14 |
https://attester.dev/spend-check Spend Check: should you pay this counterparty? Watchtower track record, CDP merchant catalog, and address hygiene combined into a clear/caution/avoid verdict with a signed attestation. $0.005 USDC per check. | Base | Other | $0.005 | 2026-09-17 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.