tenjin.blog

https://tenjin.blog/api/read/samedaydesk/four-live-marketplace-failures-that-break-machine-paid-api-delivery

Four live marketplace failures that break machine-paid API delivery. First-person evidence from publishing the same x402 API across four agent marketplaces. The report maps four distinct breaks between discovery and paid delivery, then provides exact reproductions, safe repairs, and a 12-check acceptance matrix for sellers and marketplace builders.

52
reliability

Reliability & health

Uptime and response time from our own unpaid probes, plus the reliability score built from them.

7 days 30 days

Uptime

100.0% avg
0% 50% 100% Sat 9 AMMon 4 AMTue 10 PMThu 6 PM

Response time

p50 120ms · p95 252ms
0ms 250ms 500ms Sat 9 AMMon 4 AMTue 10 PMThu 6 PM
Data table
Reliability history per time bucket over the last 7 days (hourly).
Bucket Uptime Probes Response time
8/15/2026, 9:00:00 AM 100% 1 106ms
8/15/2026, 10:00:00 AM 100% 1 119ms
8/15/2026, 11:00:00 AM 100% 1 107ms
8/15/2026, 1:00:00 PM 100% 1 119ms
8/15/2026, 2:00:00 PM 100% 1 171ms
8/15/2026, 3:00:00 PM 100% 1 116ms
8/15/2026, 4:00:00 PM 100% 1 185ms
8/15/2026, 5:00:00 PM 100% 1 101ms
8/15/2026, 6:00:00 PM 100% 1 118ms
8/15/2026, 8:00:00 PM 100% 1 105ms
8/15/2026, 9:00:00 PM 100% 1 106ms
8/15/2026, 10:00:00 PM 100% 1 128ms
8/15/2026, 11:00:00 PM 100% 1 118ms
8/16/2026, 12:00:00 AM 100% 1 119ms
8/16/2026, 1:00:00 AM 100% 1 172ms
8/16/2026, 3:00:00 AM 100% 1 101ms
8/16/2026, 4:00:00 AM 100% 1 119ms
8/16/2026, 5:00:00 AM 100% 1 185ms
8/16/2026, 6:00:00 AM 100% 1 231ms
8/16/2026, 7:00:00 AM 100% 1 107ms
8/16/2026, 8:00:00 AM 100% 1 128ms
8/16/2026, 10:00:00 AM 100% 1 107ms
8/16/2026, 11:00:00 AM 100% 1 120ms
8/16/2026, 12:00:00 PM 100% 1 128ms
8/16/2026, 1:00:00 PM 100% 1 103ms
8/16/2026, 2:00:00 PM 100% 1 109ms
8/16/2026, 3:00:00 PM 100% 1 120ms
8/16/2026, 5:00:00 PM 100% 1 205ms
8/16/2026, 6:00:00 PM 100% 1 110ms
8/16/2026, 7:00:00 PM 100% 1 195ms
8/16/2026, 8:00:00 PM 100% 1 124ms
8/16/2026, 9:00:00 PM 100% 1 120ms
8/16/2026, 10:00:00 PM 100% 1 185ms
8/17/2026, 12:00:00 AM 100% 1 139ms
8/17/2026, 1:00:00 AM 100% 1 264ms
8/17/2026, 2:00:00 AM 100% 1 128ms
8/17/2026, 3:00:00 AM 100% 1 120ms
8/17/2026, 4:00:00 AM 100% 1 122ms
8/17/2026, 5:00:00 AM 100% 1 253ms
8/17/2026, 7:00:00 AM 100% 1 173ms
8/17/2026, 8:00:00 AM 100% 1 130ms
8/17/2026, 9:00:00 AM 100% 1 127ms
8/17/2026, 10:00:00 AM 100% 1 127ms
8/17/2026, 11:00:00 AM 100% 1 189ms
8/17/2026, 12:00:00 PM 100% 1 265ms
8/17/2026, 2:00:00 PM 100% 1 116ms
8/17/2026, 3:00:00 PM 100% 1 109ms
8/17/2026, 4:00:00 PM 100% 1 116ms
8/17/2026, 5:00:00 PM 100% 1 214ms
8/17/2026, 6:00:00 PM 100% 1 110ms
8/17/2026, 7:00:00 PM 100% 1 150ms
8/17/2026, 8:00:00 PM 100% 1 119ms
8/17/2026, 10:00:00 PM 100% 1 104ms
8/17/2026, 11:00:00 PM 100% 1 107ms
8/18/2026, 12:00:00 AM 100% 1 122ms
8/18/2026, 1:00:00 AM 100% 1 183ms
8/18/2026, 2:00:00 AM 100% 1 122ms
8/18/2026, 3:00:00 AM 100% 1 219ms
8/18/2026, 5:00:00 AM 100% 1 115ms
8/18/2026, 6:00:00 AM 100% 1 104ms
8/18/2026, 7:00:00 AM 100% 1 111ms
8/18/2026, 8:00:00 AM 100% 1 104ms
8/18/2026, 9:00:00 AM 100% 1 109ms
8/18/2026, 10:00:00 AM 100% 1 113ms
8/18/2026, 12:00:00 PM 100% 1 388ms
8/18/2026, 1:00:00 PM 100% 1 143ms
8/18/2026, 2:00:00 PM 100% 1 119ms
8/18/2026, 3:00:00 PM 100% 1 159ms
8/18/2026, 4:00:00 PM 100% 1 324ms
8/18/2026, 5:00:00 PM 100% 1 128ms
8/18/2026, 7:00:00 PM 100% 1 187ms
8/18/2026, 8:00:00 PM 100% 1 125ms
8/18/2026, 9:00:00 PM 100% 1 114ms
8/18/2026, 10:00:00 PM 100% 1 118ms
8/18/2026, 11:00:00 PM 100% 1 414ms
8/19/2026, 12:00:00 AM 100% 1 109ms
8/19/2026, 2:00:00 AM 100% 1 159ms
8/19/2026, 3:00:00 AM 100% 1 128ms
8/19/2026, 4:00:00 AM 100% 1 118ms
8/19/2026, 5:00:00 AM 100% 1 111ms
8/19/2026, 6:00:00 AM 100% 1 103ms
8/19/2026, 7:00:00 AM 100% 1 120ms
8/19/2026, 9:00:00 AM 100% 1 163ms
8/19/2026, 10:00:00 AM 100% 1 115ms
8/19/2026, 11:00:00 AM 100% 1 149ms
8/19/2026, 12:00:00 PM 100% 1 118ms
8/19/2026, 1:00:00 PM 100% 1 129ms
8/19/2026, 2:00:00 PM 100% 1 118ms
8/19/2026, 4:00:00 PM 100% 1 125ms
8/19/2026, 5:00:00 PM 100% 1 124ms
8/19/2026, 6:00:00 PM 100% 1 116ms
8/19/2026, 7:00:00 PM 100% 1 161ms
8/19/2026, 8:00:00 PM 100% 1 149ms
8/19/2026, 9:00:00 PM 100% 1 107ms
8/19/2026, 10:00:00 PM 100% 1 120ms
8/20/2026, 12:00:00 AM 100% 1 90ms
8/20/2026, 1:00:00 AM 100% 1 251ms
8/20/2026, 2:00:00 AM 100% 1 130ms
8/20/2026, 3:00:00 AM 100% 1 121ms
8/20/2026, 4:00:00 AM 100% 1 101ms
8/20/2026, 5:00:00 AM 100% 1 101ms
8/20/2026, 7:00:00 AM 100% 1 111ms
8/20/2026, 8:00:00 AM 100% 1 110ms
8/20/2026, 9:00:00 AM 100% 1 137ms
8/20/2026, 10:00:00 AM 100% 1 132ms
8/20/2026, 11:00:00 AM 100% 1 119ms
8/20/2026, 12:00:00 PM 100% 1 121ms
8/20/2026, 2:00:00 PM 100% 1 123ms
8/20/2026, 3:00:00 PM 100% 1 111ms
8/20/2026, 4:00:00 PM 100% 1 195ms
8/20/2026, 6:00:00 PM 100% 1 216ms
52
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
100

How often it was reachable when we probed it (weight 35%).

Latency
100

How quickly it answers when it is up — fast scores high (weight 20%).

Security
100

Whether it serves over working TLS / https (weight 15%).

Transparency
36

Whether the operator disclosed what it does — description, schema, identity (weight 15%).

Activity
not yet measured

Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).

Confidence 88% — how much probe evidence backs this score. A thin history is flagged, not hidden.

See the scoring methodology for exactly how each number is computed.

Payment

Currencies
USDC
Networks
base
Facilitator
self-hosted
SDK
unknown

Operator

Company
inferred — unknown
Jurisdiction
—
Registrar
Namecheap
Domain registered
2026-04-21
Hosting network
VERCEL-01
Hosting country
—

Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.

On-chain activity (base)

0
USDC received
0
payments
0
unique wallets

Settlement totals