What it is
Plugins can call model.fork to ask a question against the live transcript, with no tools and a two-turn cap.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.257.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
First cited
1The earliest release whose published evidence quoted model.fork was v2.1.257, 1 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 above.
Names beside it
Every settings key in the inventory starting model, up to twelve of them.
modelChange the [model](/docs/en/model-config#set-a-default-model-for-new-sessions) Claude Code starts with v2.1.138
modelOverrides[Map model IDs](/docs/en/model-config#override-model-ids-per-version) to your provider's IDs, such as Bedrock ARNs v2.1.138
modelPickerChoose which models the [/model picker](/docs/en/model-config#available-models) lists, in your own order and with your own labels v2.1.242
modelPrefer1mContextA new setting can make the model picker default to the 1M-context model variant. never mined
modelPricingReport spend at your organization's contracted rates instead of list price v2.1.242
modelPricing.multipliermodelPricing.multiplier now accepts any value greater than 0 up to 10, not just 0 to 1 never mined
modelProposedGoalsA "Claude-proposed goals" setting in the config panel controls whether Claude suggests session goals. v2.1.227
modelSettingsKeep a saved [effort level](/docs/en/model-config#adjust-effort-level) per model, or cap one model's effort v2.1.239
modelUsageSDK results now document exactly what token usage and dollar cost figures include, and that /clear resets them. never mined
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.