preflight402.com
Base · payout 0xb9db3966c7f18283624c97e860a84cef7f9ba607
Answers HTTP 402
0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-10-03
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)
1 x402-style payment from 1 distinct payer, $0.05 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 1
- Outside payers
- 1
- USDC
- 0.05
All USDC received at this payout address: $0.05 (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 | 0xb9db3966c7f18283624c97e860a84cef7f9ba607 | 8 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-03 | 1 x402-style payment from 1 distinct payer, $0.05 USDC in the last 7 days (Base, exact read) |
- Hosts
- preflight402.com
- Listings
- 8 registered in the x402 catalogue
- Price range
- $0.050 to $0.100 per call, as registered
- Categories (auto)
- Onchain data (3), Developer tools (1), Inference (1), Other (1), Security (1), Web data (1)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0xb9db39…9ba607 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 · 8
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://preflight402.com/v1/cve/check Call before acting on CVE identifiers produced by a model. Returns whether each CVE record exists and its state (published or rejected), with severity and the official CVE record link. Catches fabricated advisory refere… | Base | Security | $0.05 | 2026-09-28 |
https://preflight402.com/v1/deps/check Call before installing packages suggested by a language model. Returns, for each npm or PyPI package name, whether it actually exists in the registry, whether it is deprecated or yanked, and — when the name is not found… | Base | Inference | $0.05 | 2026-09-28 |
https://preflight402.com/v1/deps/version-check Call before pinning or installing a specific package version in npm, PyPI or crates.io. Returns whether that exact version exists in the official registry, its publication timestamp, whether it is deprecated or yanked, … | Base | Developer tools | $0.05 | 2026-09-28 |
https://preflight402.com/v1/ai-act/obligations Call when you need to know which articles of the EU AI Act mention a given obligation for a given role (provider, deployer, importer, distributor, authorised representative). Returns the matching articles with headings,… | Base | Web data | $0.1 | 2026-09-28 |
https://preflight402.com/v1/btc/tx-context Call before signing a Bitcoin transaction when you need chain context for its inputs: whether each prevout exists, whether it is already spent, its value in sats and its confirmations. Resolves up to 10 inputs against a… | Base | Onchain data | $0.1 | 2026-09-28 |
https://preflight402.com/v1/btc/tx-inspect Call before signing or broadcasting a Bitcoin transaction. Decodes a raw transaction hex or a PSBT and returns inputs, outputs, script types, addresses, vsize, fee rate when derivable, and objective signals such as RBF,… | Base | Onchain data | $0.1 | 2026-09-28 |
https://preflight402.com/v1/evm/tx-inspect Call before signing an Ethereum or Base transaction or calldata. Decodes raw transaction bytes or contract calldata against standard interfaces (ERC-20, ERC-721, ERC-1155, WETH, EIP-2612 Permit and Permit2) in memory. R… | Base | Onchain data | $0.1 | 2026-09-28 |
https://preflight402.com/v1/legal/cite-check Call before publishing a claim that cites EU law. Checks that the cited instrument exists in our pinned corpus, that the cited article exists within it, and whether your quoted text actually appears in that article. Cov… | Base | Other | $0.1 | 2026-09-28 |
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.