sdkMcpServerConfigs
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.
SDK-hosted MCP servers can each carry their own timeout, applied when registered.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.248.
In the changelogs
3Releases whose published page names sdkMcpServerConfigs.
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v2.1.310
SDK MCP servers: connectorId is also fixed at first registration
An SDK MCP server's connectorId now joins timeout and disableAutoBackground as settings that a later re-register cannot change
named in this entry, found in this entry's text
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v2.1.281
SDK can hand in-process MCP server manifests to the CLI at initialize
The Agent SDK can now read tool lists from in-process MCP servers itself and pass them to the CLI when it starts
found in this entry's text
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v2.1.248
Per-server timeouts for SDK-hosted MCP servers
SDK-hosted MCP servers can each carry their own timeout, applied when registered.
found in this entry's text
First cited
1The earliest release whose published evidence quoted sdkMcpServerConfigs was v2.1.248, 27 Aug 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.
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.