CLAUDE_CODE_DISABLE_MCP_TASKS

A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.317, including the newest one read.

Releases whose published page names CLAUDE_CODE_DISABLE_MCP_TASKS.

1. v2.1.318 3 Nov 2026
   MCP environment variable check widened, and tool results over the media limit marked

   A check that filters CLAUDE_CODE_DISABLE_MCP_TASKS now covers several names, and media that is not sent is replaced with a note

   found in this entry's text

2. v2.1.317 2 Nov 2026
   MCP task support can be turned off with CLAUDE_CODE_DISABLE_MCP_TASKS

   Setting CLAUDE_CODE_DISABLE_MCP_TASKS turns off MCP task support, and the remote switch for it can now default to on in some setups

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

3. v2.1.317 2 Nov 2026
   Two Claude Code environment variables now reach the programs it starts

   CLAUDE_CODE_DISABLE_MCP_TASKS is now passed on to programs Claude Code starts, and CLAUDE_CODE_HOST_SHORT_TEMP_DIRS is always set for them

   found in this entry's text

The earliest release whose published evidence quoted CLAUDE_CODE_DISABLE_MCP_TASKS was v2.1.317, 2 Nov 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.

One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.

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 environment variable does. All environment variables.