tengu_mcp_pending_call
A Claude Code feature flag, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
The MCP wait debug line now shows cached servers as their own count.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.221.
In the changelogs
2Releases whose published page names tengu_mcp_pending_call.
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v2.1.265
WaitForMcpServers tool refactored to a create()-based factory and drops its explicit auto-allow checkPermissions
Internal tool that waits for MCP servers was rebuilt as a factory function and no longer auto-allows itself
gate cited by this entry
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v2.1.221
WaitForMcpServers counts cached servers separately
The MCP wait debug line now shows cached servers as their own count.
gate cited by this entry, found in this entry's text
Gate readings
0No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.
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 feature flag does. All feature flags.