| # Fuchsia SDK |
| |
| This directory contains the source code for the core of the [Fuchsia |
| SDK](../docs/glossary.md#fuchsia-sdk). The SDK itself is produced as an output |
| of the build by processing the contents of this directory. For example, this |
| directory might contain the source code for a library that is included in the |
| SDK as a prebuilt shared library. |
| |
| Software outside of the [Platform Source |
| Tree](../docs/glossary.md#platform-source-tree) should depend only on the Fuchsia |
| SDK. |
| |
| > [Learn more](../docs/development/sdk/README.md) |
| |
| ## Categories |
| |
| Not all the interfaces defined in this directory are part of every Fuchsia SDK. |
| Instead, interfaces have a `category` label that determines whether the |
| interface can be included in a given SDK. For example, interfaces with the |
| `internal` category are available only within the |
| [Platform Source Tree](../docs/glossary.md#platform-source-tree). |
| Interfaces with the `partner` category are additionally available to partner |
| projects. See [sdk_atom.gni](../build/sdk/sdk_atom.gni) for more details. |
| |
| ## Governance |
| |
| The API surface described by the SDK is governed by the |
| [Fuchsia API Council](../docs/development/api/council.md) and should conform to |
| the appropriate [API rubrics](../docs/development/api/README.md). |
