Slack · Rate Limits

Slack Rate Limits

Slack Web API uses per-method tiered rate limits. App-scoped, with overall limit varying by method tier.

Slack Rate Limits is the machine-readable rate-limit profile for Slack on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 6 rate-limit definitions, measuring requests_per_minute, messages_per_second, and events_per_second.

The profile also includes response codes documented for throttled.

Tagged areas include Rate Limiting and Messaging.

6 Limits Throttle: 429
Rate LimitingMessaging

Limits

Tier 1 methods (e.g., admin.*) app/workspace
requests_per_minute · minute
1
Tier 2 methods (e.g., conversations.history) app/workspace
requests_per_minute · minute
20
Tier 3 methods (e.g., conversations.list) app/workspace
requests_per_minute · minute
50
Tier 4 methods (most common) app/workspace
requests_per_minute · minute
100
chat.postMessage (special) app/workspace/channel
messages_per_second · second
1
1 message per second per channel; short bursts of up to 17/min allowed.
Events API delivery app
events_per_second · hour
30000
30k events per hour per workspace per app; beyond, events are dropped.

Sources