Part of slack.comMixed72 tested URLs
Can you open https://slack.com/api from mainland China?
Sometimes.
Access is unreliable — 100% of the last 2 conclusive tests showed interference.
Access slack.com with GreatFireVPN →2018first tested
2/2disrupted · last 90 days
2 mo agolast tested
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Frequently asked questions
Is https://slack.com/api blocked in mainland China right now?
As of the last test on 2026-06-20, https://slack.com/api is 100% disrupted in mainland China, based on GreatFire's live Great Firewall measurements.
Why is https://slack.com/api blocked in mainland China?
Access is unreliable — 100% of the last 2 conclusive tests showed interference.
Since when has https://slack.com/api been blocked?
GreatFire has recorded interference with https://slack.com/api from mainland China since 2018-12-04.
How can I access https://slack.com/api from mainland China?
You need a circumvention tool such as a VPN. GreatFireVPN, built by GreatFire, is designed to bypass the Great Firewall and reach sites like slack.com.
https://slack.com/api · JSON