Fix Slack Error 429 Too Many Requests Rate Limit (2025)

Updated: 11/29/2025

You try to run a slash command, send a batch of messages, or trigger a bot in Slack, and instead of the expected response you see Error 429 Too Many Requests or a popup about being rate limited. It feels harsh because you are just trying to get work done, yet Slack temporarily blocks your actions. This error means Slack is protecting its systems from bursts of traffic, but you can usually fix it by slowing down automation and cleaning up integrations.

Table of Contents

Method 1: Slow Down Bots And Custom Integrations

Update your code or configuration so that when Slack responds with status code 429 your app waits before retrying instead of hammering the endpoint. Use the Retry-After header value from the response as the minimum delay, and spread bulk operations over several minutes instead of a few seconds.

Method 2: Reduce Manual Message Flooding And Bulk Actions

Sign out of old Slack sessions on unused computers and close extra browser tabs that point to the same workspace. Multiple active sessions firing presence updates and message actions simultaneously can increase the background request rate without you noticing.

Warning: If your organization uses shared accounts, coordinating activity is crucial, several people sending automated style messages from a single user at the same time is very likely to hit rate limits.

Method 3: Use Separate Apps And Tokens For Heavy Workloads

Add logging around all Slack API responses in your automation stack, paying attention to 429 status codes and any related headers. Use these logs to adjust your polling intervals, batch sizes, and retry logic over time so your tools stay within safe limits even as your workspace grows.