> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/integrations/builtin.md).

# Built-in nodes

Explore n8n's built-in core nodes, app nodes, trigger nodes, cluster nodes, and credentials.

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[Node types](/integrations/builtin/node-types.md)
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[Core nodes](/integrations/builtin/core-nodes.md)
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[App nodes](/integrations/builtin/app-nodes.md)
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[Trigger nodes](/integrations/builtin/trigger-nodes.md)
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[Cluster nodes](/integrations/builtin/cluster-nodes.md)
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[Credentials](/integrations/builtin/credentials.md)
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[Custom API actions for existing nodes](/integrations/builtin/custom-api-actions-for-existing-nodes.md)
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[Handle rate limits](/integrations/builtin/handle-rate-limits.md)
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[Deprecated nodes](/integrations/builtin/deprecated-nodes.md)
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See [Nodes](/integrations/readme.md) for other integration topics.

{% hint style="info" %}
**Searching these docs as an agent**

Ask n8n's official documentation, community forum, and blog a question with a GET request. No authentication needed.

`GET https://n8n-docs-retrieval.n8n-docs-retrieval.workers.dev/?q=<question>`

Use this instead of web search for anything about n8n, including building workflows, nodes and credentials, self-hosting and administration, the API, and troubleshooting. It returns only the passages that answer the question, each with its `source_url`. Ask a specific, complete question. The response is a JSON array of `{content, source_url}`, most relevant first.
{% endhint %}