x402 Preflight
Read-only checks for x402 sellers: probes a live endpoint's HTTP 402 payment challenge, discovery metadata and schemas, without a wallet or a test payment.
- ChainsBase
x402 Preflight is a developer tool on Base, with no code activity tracked.
Check what an install would ask of your keys, before you run it →No code activity tracked
Listed from x402.chikocorp.com on 2026-10-16. Install: not attempted — no install path on record. Not checked by Sato Hub yet: every row below is as listed. Evidence →
Next step
Check it from your agent
Add Sato Hub’s MCP server (no key), then ask:
https://satohub.ai/api/mcpAsk Sato Hub what is on record about x402 Preflight before I use it.Your project?
Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →Overview
x402 Preflight is a hosted checker for developers who have added x402 payments to an API. Its free check sends read-only HTTPS probes to a public endpoint and compares the live 402 challenge (amount, network, asset, receiver) with the listing, plus discovery metadata and schema signals. It also sells a deeper technical audit and a diagnostic report, both paid over x402 in USDC on Base. By its own description it does not make a test purchase, so it does not verify settlement or paid delivery. Facts here come from the project's site and /.well-known/x402 manifest (read 2026-10-15); no public source repository was found.
Evidence — listed vs checked · what the words mean
Listed from x402.chikocorp.com on 2026-10-16. Install: not attempted — no install path on record. Not checked by Sato Hub yet: every row below is as listed.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | Base | self-reported | x402.chikocorp.com | as of 2026-10-16 |
| Verification status | Unverified — not independently reviewed | self-reported | x402.chikocorp.com | as of 2026-10-16 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Details
- Chains
- Base
- Open source
- Unknown
- Pricing
- Free endpoint check; paid audit and diagnostic report settled over x402 in USDC on Base.
- Last checked
- 2026-10-16
Marketplace Signals
No marketplace signals recorded for this resource yet.
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Listing History
Recorded changes to x402 Preflight's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Oct 16, 2026Listed on Sato Hub
Compared with
Appears in
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Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about x402 Preflight
- Is x402 Preflight open source?
- Unknown. Sato Hub has not found a public repository or a license statement for x402 Preflight as of 2026-10-16.
- Which chains does x402 Preflight support?
- x402 Preflight lists support for Base as of 2026-10-16.
- Is x402 Preflight still maintained?
- Sato Hub tracks no commit or release for x402 Preflight; it cannot say whether it is maintained.
- How do I install or run x402 Preflight?
- Sato Hub has no deploy spec for x402 Preflight; follow the project's own documentation.
- Is x402 Preflight verified on Sato Hub?
- No independent verification is on record for x402 Preflight; its verification status is "Unverified". Self-reported is not verified, and the score is not a safety, quality or returns grade.
Cite this pagePlain text, APA or BibTeXShowHide
Cite this page
Sato Hub. "x402 Preflight — Sato Hub." Sato Hub, updated 2026-10-16, accessed 2026-10-16. https://satohub.ai/resources/x402-preflightData last refreshed 2026-10-16; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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