payment-guard

Verify an x402 purchase before an AI agent signs.

Verify an x402 purchase before an AI agent signs. Validate the live HTTP 402 challenge, Base network, USDC asset, quoted price, recipient, price ceiling, buyer funding, optional gas reserve, and destination hazards, then receive a machine-readable safe-to-sign, fund, review, or reject decision. No account or API key.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.01 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0xe5690d37…4e0e5e75

URL

https://anywaypossible.com/api/payment-guard

MCP server on this host: io.github.anyway-possible/agent-utilities

Seen

first 35 days ago · last 17 hr ago

64 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.734 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.266: 0.066 uncertain ? + 0.200 short ? · 0.066 to B

How the composite of 0.734 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	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	1.00	0.890		0.534	0	−0.066
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.734	gap to 1.000 = 0.266 · 0.200 short · 0.066 uncertain	0.734	−0.200	−0.066

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 × 0.890   liveness       
+ 0.200 × 1.000   price stability
= 0.734           → UNRATED: 56 of 30 paid calls      weights 2026.09.6 · 56 samples · seed cap_01M1A59XV4EJ91QZG0YTCVQTB1|2026-09-03T19:37:39.367Z|2026.09.6

Verify it yourselfnpx teppi-check https://anywaypossible.com/api/payment-guardcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59XV4EJ91QZG0YTCVQTB1