`prompt.fill`

setting never mined JSON

A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

Plugins can now fill in or suggest text directly in the prompt input box via two new prompt.fill and prompt.suggest actions

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.268.

First seen — never in a mined build

Last seen — never in a mined build

Builds0 / 159on this box, as of v2.1.319

Written about v2.1.268 first named in a changelog, 10 Sep 2026

In the changelogs

Releases whose published page names prompt.fill.

v2.1.309 22 Oct 2026
Filling the prompt box can now set where the cursor lands
prompt.fill now accepts an optional cursor position, so text placed in the prompt box can leave the cursor at a chosen point

named in this entry, found in this entry's text
v2.1.304 19 Oct 2026
Plugins filling the prompt box can pass an extra value
When a plugin fills in the prompt box, it can now pass an extra value along, and a new onboarding setting defaults to on

found in this entry's text, named in this entry
v2.1.290 5 Oct 2026
Remote control keeps a permission prompt open when the answer is for another tool
When a session is controlled remotely, a permission answer naming the wrong tool no longer dismisses the prompt that is waiting

found in this entry's text
v2.1.286 30 Sep 2026
A new prompt.compose event joins the other prompt events
Claude Code now registers a prompt.compose event alongside prompt.submit, prompt.fill and prompt.suggest

found in this entry's text
v2.1.282 24 Sep 2026
prompt.fill now says why it did not fill the prompt
Plugin hooks calling prompt.fill now get a refusal reason such as "dialog" or "no_composer" when the prompt was not filled

found in this entry's text, named in this entry
v2.1.277 18 Sep 2026
Plugin hook dispatch deep-copies input for a fixed set of UI/registration events
Plugin hooks now receive a deep copy of the event payload for UI and registration events, not the original

found in this entry's text
v2.1.275 17 Sep 2026
New plugin hook API: $.prompt.read
New plugin hook API lets plugins read the current text and cursor position in the prompt box

found in this entry's text
v2.1.275 17 Sep 2026
Plugin-originated slash actions now include prompt.fill and prompt.suggest, not just command.run
Plugin-triggered slash actions now also cover prompt.fill and prompt.suggest, not just command.run

found in this entry's text, named in this entry
v2.1.268 10 Sep 2026
New plugin API actions: prompt.fill and prompt.suggest
Plugins can now fill in or suggest text directly in the prompt input box via two new prompt.fill and prompt.suggest actions

found in this entry's text, named in this entry

First cited

The earliest release whose published evidence quoted prompt.fill was v2.1.268, 10 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.

ReleaseDateThe span that was quoted

v2.1.26810 Sep 2026"prompt.fill": no("prompt.fill", "isFilled")

v2.1.26810 Sep 2026"prompt.fill": tNe.core,

v2.1.26810 Sep 2026"prompt.fill": tNe.core, "prompt.suggest": iNe.core

v2.1.26810 Sep 2026prompt.fill (${r.kind}): ${n.length} chars,

Presence across releases

The 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.

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.

Names beside it

Every settings key in the inventory starting prompt, up to twelve of them.

prompt v2.1.315
Auto-mode is stricter: text you asked Claude to review can't grant permission on your behalf.
prompt.attachment never mined
New prompt.attachment hook lets plugins rewrite or remove text attached to a message
prompt.autocomplete never mined
A new prompt.autocomplete plugin hook lets plugins add completion rows under the prompt, including for desktop, mobile and VS Code composers
prompt.change never mined
The prompt.change hook runs when a plugin or the landing screen changes the prompt box, and stops itself if plugins keep refilling it
prompt.compose never mined
Claude Code can now compare two versions of a changing schema and label the difference, such as text only or new live additions
prompt.context never mined
A new prompt.context hook event lets plugins add named context blocks to a prompt, capped at 32 blocks and 32000 characters.
prompt.edit never mined
Plugins can now hook into 'prompt.attachment' to rewrite or drop attachment text before it reaches the model
prompt.md never mined
plugin eval warns when writing results inside a plugin's own directory could get picked up as plugin components
prompt.paint never mined
A new plugin hook, prompt.paint, takes text and decorations and returns the text and cursor position to show in the prompt
prompt.read never mined
New plugin hook API lets plugins read the current text and cursor position in the prompt box
prompt.submit never mined
Hooks can now rewrite or drop your prompt before it is sent.
prompt.suggest never mined
Plugins can now fill in or suggest text directly in the prompt input box via two new prompt.fill and prompt.suggest actions

Documentation pages 2

Mods referencementions itClaude Code CLI
Test a modmentions itClaude Code CLI

A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.