Contract record
Slack file upload and conversations rate-limit contract changes
Slack file uploads moved to the external upload sequence, and selected Web API read methods now have cohort-dependent limits for new commercial apps.
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Child Repairs
Slack API conversations.history limit 15 messages May 2025 officialAPI sequence and cohort limit drift · 9 observed queries
Slack Web API Marketplace app unlisted commercial app rate limits pagination Marketplace approved apps special rate limits conversations.history conveCohort-specific rate/pagination · 7 observed queries
Slack files.upload deprecated November 12 2025 file upload no longer uploads filesEndpoint workflow replacement · 6 observed queries
Slack Web API rate limits conversations.history 1 request per minute Marketplace commercial distribution internal appsCohort-specific rate/pagination · 5 observed queries
Slack API conversations.replies rate limit Retry-After 60 new unlisted installation conversations.replies May 2025API sequence and cohort limit drift · 5 observed queries
Slack Web API conversations.history rate limit new apps 1 request per minute non Marketplace commercially distributed May 29 2025Cohort-specific rate/pagination · 4 observed queries
Slack Web API conversations.replies rate limit new cohort limit thread backfill 429Cohort-specific rate/pagination · 4 observed queries
Slack Web API rate limits new commercially distributed apps existing apps grandfathered May 29 2025 conversations.history conversations.repliesCohort-specific rate/pagination · 4 observed queries
Slack @slack/web-api uploadV2 files.upload migration official docsAPI sequence and cohort limit drift · 4 observed queries
Slack files.getUploadURLExternal completeUploadExternal bytes upload no file appears channelEndpoint workflow replacement · 4 observed queries
Slack files.getUploadURLExternal completeUploadExternal upload retry duplicate file_id official docsEndpoint workflow replacement · 4 observed queries
Slack files.upload method_not_supported newly created apps legacy files.upload deprecated files_upload_v2Endpoint workflow replacement · 4 observed queries
Slack conversations.history default limit 15 maximum limit 15 May 29 2025Cohort-specific rate/pagination · 3 observed queries