Plugins in the SDK changedagent-sdk/plugins
Nearest release: v2.1.283, published 4 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 25 Sep 2026 23:42 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 26 Sep 2026 00:07 UTC.
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310310### Plugin not loading
311311
312If your plugin doesn't appear in the init message:
312If your plugin doesn't appear in the init message's `plugins` list, check its [`plugin_errors`](/docs/en/agent-sdk/typescript#sdksystemmessage) field for the reason, then work through these checks:
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3143141. **Check the path**: ensure the path points to the plugin root directory, the parent of `skills/`, `agents/`, `hooks/`, `commands/`, or `.claude-plugin/`
3153152. **Validate plugin.json**: if your plugin includes a manifest, ensure it has valid JSON syntax
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