Opt-in spell checking for the prompt input / Claude Code v2.1.235

Use it now

Useful4 Signal3

Prompt Input Notable

Turn on spellcheck to underline misspelled words as you type in the prompt.

spellcheckenabledcheckerlanguagecolor

What

Claude Code can now underline misspelled words as you type in the prompt, using a spell checker already installed on your machine. Turn it on with "spellcheck": { "enabled": true } in your user or managed settings; the default is false. checker defaults to "auto", which picks the first of aspell, hunspell or ispell found on PATH, and if none is found spell checking stays off silently. language and color are also configurable.

Details

The setting is only read from user settings, managed settings and command-line flags. A spellcheck block in a project's .claude/settings.json or .claude/settings.local.json is ignored, with a warning.
language must be a plain dictionary name; the value is validated before being passed to the checker.
The driver shells out to the installed checker and parses its ispell-protocol output; usage is recorded under an input_spellcheck telemetry event.

Usage

{ "spellcheck": { "enabled": true, "checker": "auto", "language": "en_US" } }

Evidence

Turn on spell checking of the prompt input (default: false)

Strings lifted out of the shipped bundle, so the claim above can be checked against them.