What it is
Plugins can install code that intercepts tool calls and repaints parts of the terminal interface.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.242.
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
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Names beside it
Every settings key in the inventory starting fs, up to twelve of them.
fs.ancestorsPlugin file access is now checked against the session root too, and plugins can list files in parent directories. never mined
fs.listClaude Code's plugin API renames its file actions and adds settings.read, env.get and env.set never mined
fs.readClaude Code's plugin API renames its file actions and adds settings.read, env.get and env.set never mined
fs.writeClaude Code's plugin API renames its file actions and adds settings.read, env.get and env.set 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.