This page keeps two claims apart: what Shippo reports about USPS, FedEx and UPS on its own status page, and what Shipzil's own rate request to Shippo's production API actually returned. Across 62 days of Shipzil's own checks, 17,544 of 17,545 rate requests to Shippo's production API (99.99%) returned a bookable rate, with a median response of 2,053ms and a 95th percentile of 3,890ms.
One fixed domestic US rate request to Shippo's production API every 5 minutes, over the last 24h. This measures one request path, not Shippo's overall speed.
2134ms
median latency
3087ms
p95 latency
11
services returned
100.0%
observed check success
100.0%
coverage, 289/289 checks
Measured rating latency per platform over the last 24 hours, sampled every 5 minutes.
Every check in this window was answered. A break in a line is a check the collector never ran.
5-minute checks · all 1 platforms · selections are saved in the URL
Shippo2134ms
no answer (0)
A break in a line is a check we never ran, not a platform failure.
The platform stopped returning these incidents without marking them resolved. They are
excluded from active status and uptime after the last update the platform published.
Shipzil reads Shippo's own status page every 5 minutes and, separately, sends a domestic US rate request to Shippo's production API. The current reading of both is at the top of this page and refreshes without reloading. A failed Shipzil check that Shippo has not acknowledged is shown as a failure it did not report, not as a declared outage.
Is it Shippo or the carrier?
Check whether other platforms report the same carrier. If only Shippo reports a USPS, FedEx or UPS problem, it is most likely Shippo's integration with that carrier. If platforms from two or more independent companies report it at the same time, it is more likely the carrier.
How reliable is the Shippo API?
Across 62 days of Shipzil's own checks, 17,544 of 17,545 rate requests to Shippo's production API (99.99%) returned a bookable rate, with a median response of 2,053ms and a 95th percentile of 3,890ms. By Shippo's own incident reports, 90-day carrier uptime was USPS 94.60%, FedEx 95.68%, UPS 93.31%. The measured figure is one fixed request path from one account, not Shippo's overall performance; the reported figure only counts outages Shippo published.