01 / Discovery
Does the endpoint exist?
Normalize routes and every advertised accepts[] option from trusted
discovery sources. No health claim yet.
Verification layer / Base mainnet
FETCH402
Verify before you pay.
The x402 ecosystem can tell you where to spend. Fetch402 measures what happens next: live quotes now, budgeted paid-delivery proofs next.
Current evidence
Signal, not hype.
Discovery volume is coverage, not reputation. Fetch402 only promotes verification outcomes—and never sells ranking.
01 / INDEXED
Endpoints observed
14336
02 / ELIGIBLE
Safe to probe
7603
03 / LIVE QUOTE
Healthy challenges
265
04 / BASE
Active payment options
14760
Trust pipeline
Three checks.
One answer.
“Listed” and “returned 402” are not delivery guarantees. Every stage adds stronger evidence and a visible timestamp.
02 / Quote probe
Does it quote correctly?
Send polite, unpaid GET/HEAD requests. Validate the x402 v2 challenge, Base network, timing, and staleness.
03 / Paid canary
Does payment deliver?
Spend from a hard-capped wallet, compare quote to settlement, then test whether the response is actually useful. Coming next.