What it is
Plugins can now hook into 'prompt.attachment' to rewrite or drop attachment text before it reaches the model
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.277.
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
3The earliest release whose published evidence quoted prompt.edit was v2.1.277, 18 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 prompt, up to twelve of them.
prompt.attachmentNew prompt.attachment hook lets plugins rewrite or remove text attached to a message never mined
prompt.contextA new prompt.context hook event lets plugins add named context blocks to a prompt, capped at 32 blocks and 32000 characters. never mined
prompt.fillPlugins can now fill in or suggest text directly in the prompt input box via two new prompt.fill and prompt.suggest actions never mined
prompt.mdplugin eval warns when writing results inside a plugin's own directory could get picked up as plugin components never mined
prompt.readNew plugin hook API lets plugins read the current text and cursor position in the prompt box never mined
prompt.submitHooks can now rewrite or drop your prompt before it is sent. never mined
prompt.suggestPlugins can now fill in or suggest text directly in the prompt input box via two new prompt.fill and prompt.suggest actions never mined
promptCacheTtlChoose the [prompt cache lifetime](/docs/en/prompt-caching#cache-lifetime) for the main conversation v2.1.242
promptSuggestionEnabledHide the grayed-out [prompt suggestions](/docs/en/interactive-mode#prompt-suggestions) in the input box v2.1.138
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.