Endpoint · searchPOSTapi.agentmercantile.com /v1/x402-service-change-snapshot
Determine whether a previously accepted x402 service payment contract is still equivalent enough to proceed.
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Determine whether a previously accepted x402 service payment contract is still equivalent enough to proceed. Compares one live unpaid 402 challenge, using a caller-supplied GET or POST request shape, against a caller-held baseline bound to that request identity. Not uptime monitoring, a trust score, a webhook, a marketplace crawl, or a generic POST {} probe of every x402 resource.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?
URL
https://api.agentmercantile.com/v1/x402-service-change-snapshot
Seen
first 16 days ago · last 17 hr ago
17 free handshakes
Payment
Pays through
— never asked
Offered on?
— never asked
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.000 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by liveness · gap to 1.000 is 1.000: 0.000 uncertain ? + 1.000 short ? · 0.450 to D
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.75 | 0.00 | 0.000 | 0.000 | −0.750 | 0 | |
| latency p95 it answered as fast as its class |
0.25 | 0.00 | 0.000 | 0.000 | −0.250 | 0 | |
| Composite | 1.00 | 0.000 | gap to 1.000 = 1.000 · 1.000 short · 0.000 uncertain | 0.000 | −1.000 | −0.000 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check; price stability · nothing to score
The multiplication, written out
0.750 × 0.000 liveness
+ 0.250 × 0.000 latency p95
= 0.000 → UNRATED: 17 of 30 paid calls weights 2026.09.6 · 17 samples · seed cap_01M2SGQ718Y9TFREKG5JS14WTV|2026-08-31T06:44:44.995Z|2026.09.6
Verify it yourself
npx teppi-check https://api.agentmercantile.com/v1/x402-service-change-snapshotcurl -s https://api.teppi.xyz/v1/trust/cap_01M2SGQ718Y9TFREKG5JS14WTV