API
===

This section describes the APIs that are available for the development of CorDapps:

* :doc:`api-states`
* :doc:`api-persistence`
* :doc:`api-contracts`
* :doc:`api-vault-query`
* :doc:`api-transactions`
* :doc:`api-flows`
* :doc:`api-core-types`

Before reading this page, you should be familiar with the :doc:`key concepts of Corda <key-concepts>`.

Internal
--------

Code that falls into the following package namespaces are for internal use only and not public. In a future release the
node will not load any CorDapp which uses them.

* Any package in the ``net.corda`` namespace which contains ``.internal``
* ``net.corda.node``