> ## Documentation Index
> Fetch the complete documentation index at: https://productbrain.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Entries

> Entry concepts for future public API documentation.

<Warning>
  **Early access** — REST entry endpoints are not the recommended integration surface yet. [**Join the Product Brain Community**](https://community.productbrain.io).
</Warning>

Entries are typed units of Chain knowledge.

Current public access is through CLI and MCP surfaces. Stable external HTTP API contracts should be documented here when they are intentionally exposed.