updatedMCPToolOutput
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.
A hook using only the older MCP output field no longer silently rewrites tool results.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.236.
In the changelogs
4Releases whose published page names updatedMCPToolOutput.
-
v2.1.296
PostToolUse hooks can rewrite MCP tool results with updatedMCPToolOutput
A PostToolUse hook can now replace an MCP tool's result using updatedMCPToolOutput when it does not set updatedToolOutput
found in this entry's text, named in this entry
-
v2.1.236
Old-style MCP tool-output rewrites from hooks are no longer applied silently
A hook using only the older MCP output field no longer silently rewrites tool results.
named in this entry, found in this entry's text
- v2.1.121
-
v2.1.121
updatedToolOutputHook Propertyfound in this entry's text
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.
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.
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.