tengu_plugin_hint_seen
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.
Tool and command output can now embed a hidden tag that suggests installing a specific plugin.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.261.
In the changelogs
2Releases whose published page names tengu_plugin_hint_seen.
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v2.1.261
New
<claude-code-hint>tag lets tool/command output suggest a plugin to installTool and command output can now embed a hidden tag that suggests installing a specific plugin.
found in this entry's text, gate cited by this entry
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v2.1.261
New telemetry for plugin hints surfaced to the user
New telemetry fires whenever a plugin install hint is shown to the user.
named in this entry, found in this entry's text, gate cited by this entry
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
1The earliest release whose published evidence quoted tengu_plugin_hint_seen was v2.1.261, 4 Sep 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 feature flag does. All feature flags.