You're reading this because you're looking for info on legacy custom integrations - an outdated way for teams to integrate with Slack. These integrations lack newer features and they will be deprecated and possibly removed in the future. We do not recommend their use.
I guess better to switch to "Events API" as suggested by slack.
Thanks for you work.
According to https://get.slack.help/hc/en-us/articles/215770388-Create-and-regenerate-API-tokens API tokens is a legacy components. Also https://api.slack.com/custom-integrations/legacy-tokens
I guess better to switch to "Events API" as suggested by slack.