API sequence and cohort limit drift

Slack API conversations.history limit 15 messages May 2025 official

A current Slack API task fails with: `conversations.history` returns only 15 messages despite larger limit.

search-observedSlack APIExternal SaaS APIAPI sequence and cohort limit driftgitdocs_candidate100

Agent Quick Fix

The local workspace gives the symptom and stale integration shape, but the correct repair depends on current official product behavior or recent release notes.

Product: Slack API
Current-contract area: `conversations.history` returns only 15 messages despite larger limit
Likely root cause: A current Slack API task fails with: `conversations.history` returns only 15 messages despite larger limit. The local stale integration is plausible but may not reflect the current external contract.
Repair direction: Verifier accepts a repair record only if it states the current contract and an actionable fix using source-backed product terms.

Validation Status

Codex searched organically, but the no-web counterfactual also passed under this fixture. Treat this as search-observed query evidence, not proof that search was necessary.

Symptom

A current Slack API task fails with: `conversations.history` returns only 15 messages despite larger limit. The local stale integration is plausible but may not reflect the current external contract.

Why This Happens

The local workspace gives the symptom and stale integration shape, but the correct repair depends on current official product behavior or recent release notes.

Verification

Verifier accepts a repair record only if it states the current contract and an actionable fix using source-backed product terms.

Common Wrong Fixes

Changing local code without checking the current external contract.
Retrying the same install, build, or API call with no version/source change.
Applying a broad unsafe bypass when a narrow compatibility fix is available.

Codex Search Keywords

These are the search terms observed in a neutral Codex validation run for this failure shape.

Slack API conversations.history limit 15 messages May 2025 official
site:api.slack.com/methods/conversations.history conversations.history limit 15 messages
https://api.slack.com/methods/conversations.history
site:docs.slack.dev/changelog conversations.history maximum default 15 March 3 2026 Slack
Slack conversations.history 1 request per minute 15 May 29 2025 March 3 2026
'March' in https://api.slack.com/methods/conversations.history
https://docs.slack.dev/changelog/
https://docs.slack.dev/changelog/2025/05/29/rate-limit-changes-for-non-marketplace-apps