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An advisory flags affected versions of a listing with a severity and a summary. Your server checks advisories for the plugins it has installed — at install time, on demand, and on a background poll you control.

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Check on demand

Lists the advisories affecting your installed plugins, from the server’s cached advisory state.

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At install time

Every install and update checks the registry before anything changes: a killed version cannot be resolved at all, and a non-withdrawn critical advisory against the requested version refuses the install. Lesser advisories ride the install response rather than blocking it.

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The background poll

A running server polls the registry for advisories affecting its installed plugins. The poll is deliberately visible: At startup the server logs the poll target URL, so the outbound call is never silent. The poll fetches advisories only — nothing about your server is sent beyond the request itself. Disable it with one env var:
With the poll off, install-time checks and tai plugins advisories still work — they are direct requests you make, not background traffic.

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See also