> ## Documentation Index
> Fetch the complete documentation index at: https://wundergraphinc-ahmet-router-624-multi-collection-mcp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Compositions

> Comprehensive records detailing every instance of a subgraph publication.

<Frame>
  <img src="https://mintcdn.com/wundergraphinc-ahmet-router-624-multi-collection-mcp/a8uxxvedBWb8ffbv/images/studio/compositions-list-with-composes-status.png?fit=max&auto=format&n=a8uxxvedBWb8ffbv&q=85&s=663f2321982af3e407bb32159eedd355" alt="Cosmo Docs compositions list with green Composes status icons" title="Compositions list with Composes status" width="768" height="418" data-path="images/studio/compositions-list-with-composes-status.png" />
</Frame>

The highlights of the compositions page are as follows:

* Track the inputs and the errors of every composition.

* Track every version of your composed schema.

* View the changes in the federated graph after each composition.

* Understand what version is currently available to the router.

<Frame>
  <img src="https://mintcdn.com/wundergraphinc-ahmet-router-624-multi-collection-mcp/ONeuW84Lvnfx43XN/images/studio/schema-composed-successfully-without-changes.png?fit=max&auto=format&n=ONeuW84Lvnfx43XN&q=85&s=02166e4521f8f16b557be8fc6a58a7cb" alt="Composed schema with no changes and trigger from suvj@wundergraph.com in Cosmo Docs" title="Schema composed successfully without changes" width="768" height="409" data-path="images/studio/schema-composed-successfully-without-changes.png" />
</Frame>

<br />

<Frame caption="Composition errors">
  <img src="https://mintcdn.com/wundergraphinc-ahmet-router-624-multi-collection-mcp/a8uxxvedBWb8ffbv/images/studio/composition-error-from-missing-field.png?fit=max&auto=format&n=a8uxxvedBWb8ffbv&q=85&s=6f302f2ce5d6ab3e11e2a402a9284ffb" alt="Cosmo Docs composition error caused by missing schema field" title="Composition error from missing field" width="768" height="418" data-path="images/studio/composition-error-from-missing-field.png" />
</Frame>