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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
Home / Reference / Settings keys

codeRunningMcpTools

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.

A new codeRunningMcpTools setting lets apps built on the SDK mark MCP tools as code-running, so auto mode treats them like code execution

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.304.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 149on this box, as of v2.1.308
Written about v2.1.304 first named in a changelog, 19 Oct 2026

In the changelogs

2

Releases whose published page names codeRunningMcpTools.

  1. v2.1.304
    SDK apps can mark MCP tools as running code for auto mode

    A new codeRunningMcpTools setting lets apps built on the SDK mark MCP tools as code-running, so auto mode treats them like code execution

    found in this entry's text

  2. v2.1.304
    SDK sessions can mark MCP tools that run code, so auto mode checks them

    SDK sessions can now name MCP tools that run model-written code, so auto mode reviews calls to them and hooks cannot change the permission mode

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

First cited

2

The earliest release whose published evidence quoted codeRunningMcpTools was v2.1.304, 19 Oct 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
v2.1.30419 Oct 2026codeRunningMcpTools
v2.1.30419 Oct 2026codeRunningMcpTools, which should map each MCP server name to a list of tool names

Presence across releases

0

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.

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