maxEffortLevel
A Claude Code settings key, read out of the shipped bundle. It was in the build from v2.1.267 and was gone by v2.1.284.
Cap the effort level for every model or per model, on every provider
Anthropic's own wording. Read off All settings, captured 2026-11-06.
In the changelogs
3Releases whose published page names maxEffortLevel.
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v2.1.301
Organizations can push more settings remotely, and the output style is now reported
Remotely managed settings now accept keys such as
effortLevel,outputStyleandattribution, and Claude Code's settings report includes the output stylefound in this entry's text
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v2.1.267
New policy setting: maxEffortLevel
New managed-settings keys maxEffortLevel and secDefault added as policy-restrictive settings
found in this entry's text, named in this entry
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v2.1.267
Per-model "maxEffortLevel" cap now enforced client-side across settings
maxEffortLevel now combines a global cap with per-model overrides across all settings files and clamps any explicit effort request
found in this entry's text, named in this entry
First cited
2The earliest release whose published evidence quoted maxEffortLevel was v2.1.267, 9 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
2Build by build
49One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.