Early-access test · 2 paid slots · closes when filled
Does your x402 endpoint actually settle and deliver?
A manual, human inspection of one x402 endpoint's full payment-to-delivery path — by someone who builds x402 services for a living.
What you get (within 24h of payment)
- Observed 402 requirements — accepts[] shape, price, network, discovery manifest (/.well-known/x402) as a real client sees them
- Settlement state — whether the payment path reaches a determinate settlement (verify → settle consistency, memo/anchor integrity)
- Delivery status — what actually comes back after payment: status, content-type, determinism
- Response digest — byte-level hash of what was delivered, so you have a tamper-evident record of this inspection
- Retry & replay risks — where a client retry double-charges, where settlement can silently fail (verify/settle gap class)
- Agent-readability — whether an MCP/OpenAPI/agent client can parse your payment instructions without human help
This is not a security audit. It is a conformance + delivery inspection from the client's side of the wire.
Basic inspection
$9
All six checks above on one endpoint (mainnet or testnet). Markdown report + raw probe transcripts.
Deep inspection
$19
Basic + retry/replay simulation + conformance matrix against the x402 v2 spec and the known facilitator failure classes, with a fix-list prioritized by impact.
Order
Telegram: @EidonZe — send your endpoint URL and the tier you want.
Or pay directly in USDC (Solana) and DM the tx signature:
3BxbU2hKkdambub72Q4aiATQU5mewuBw2X1muSoBEpX5
Basic $9 · Deep $19 — send exact USDC amount, then your URL via Telegram. Report delivered within 24h as a shareable Markdown doc. 2 slots total — this page comes down when they're gone.
Why trust the inspector
- We shipped our own x402-native service (ReceiptRail, listed on Smithery) — dual-network settlement, on-chain anchored delivery digests, offline verification
- We've debugged our endpoints against x402scan's own auditor line-by-line and survived it
- We track the known facilitator failure classes (verify/settle gap, replay, gas-sponsorship abuse) from the 2026 x402 security research