Shahin Saadati c317e48208 Add Kotlin tabs for creating and registering a plugin (#2119) ...

adk-kotlin 0.7.0 added a plugins parameter to the agent-based InMemoryRunner
constructor. App.plugins already existed at 0.6.0, so this is an ergonomic
shorthand rather than a new capability, but it is the form a Kotlin reader
should see and the plugins page had no Kotlin at all.

Two tab groups rather than one. The Register group's prose refers to
"the CountInvocationPlugin plugin defined in the previous section", so a Kotlin
tab there alone would point at a class the page never defines in Kotlin. Adding
the Create group as well makes the pair self-contained.

Kotlin now appears in two of the page's nine groups; the remaining seven are
per-callback detail. Whether to finish the page is a separate decision.

Plugin declares exactly one abstract member, name -- all twelve callbacks and
close() have defaults -- so a custom plugin only overrides what it needs. The
snippet overrides beforeAgent and beforeModel, matching the callbacks the
surrounding prose describes.

Transcluded and registered, so CI compiles and lints it. Also run: the runner is
constructed with the plugin wired, and invoking beforeAgent twice prints
"[Plugin] Agent run count: 1" then 2, so the counter callbacks work.

2026-08-14 07:57:23 -07:00

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index.md

Add Kotlin tabs for creating and registering a plugin (#2119)

2026-08-14 07:57:23 -07:00