payment-preflight

Evaluate caller-supplied x402 payment requirements before a wallet signs them.

Evaluate caller-supplied x402 payment requirements before a wallet signs them. Use after receiving HTTP 402 to enforce a maximum USDC amount, allowed networks, exact scheme, recipient presence, and an optional expiry buffer. Returns eligible accepts and explicit blockers for 0.002 USDC via x402 on Base; it never signs, pays, stores, or echoes a payment signature.

UNRATEDDelisted

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.002 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x9f8bd987…175e73a2

URL

https://api.delx.ai/api/v1/x402/payment-preflight

MCP server on this host: io.github.davidmosiah/delx-mcp-a2a

Seen

first 35 days ago · last 24 days ago

33 free handshakes

Payment

Pays through

x402 · MPP tempo

Offered on?

Base USDC, Solana, Tempo USDC.e

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.1

UN
RATED

0.688 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.312: 0.188 uncertain ? + 0.124 short ? · 0.112 to B

How the composite of 0.688 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.38	0.000		0.000	−0.124	−0.076
liveness it answered at all	0.60	1.00	0.814		0.488	0	−0.112
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.688	gap to 1.000 = 0.312 · 0.124 short · 0.188 uncertain	0.688	−0.124	−0.188

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.814   liveness       
+ 0.200 × 1.000   price stability
= 0.688           → UNRATED: 33 of 30 paid calls      weights 2026.09.1 · 33 samples · seed cap_01M1A5A7QPVH9960XZSCJ8XC6V|2026-08-17T18:11:57.788Z|2026.09.1

Verify it yourselfnpx teppi-check https://api.delx.ai/api/v1/x402/payment-preflightcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A7QPVH9960XZSCJ8XC6V