# Versioning

impact uses numeric versioning.

You will see versions like `v13.0`.

Each audience has its own version track.

A breaking change increments the major version.

### Review current support

* Brand API: current `v13.0`, support `v8.0` through `v13.0`
* Partner API: current `v15.0`, support `v11.0` through `v15.0`
* Agency API: current `v3.0`, support `v2.0` through `v3.0`

### Follow upgrade guidance

Add an upgrade note when you ship a breaking change.

Add a deprecation window before you remove behavior.


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# Agent Instructions: Querying This Documentation

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://integrations.impact.com/api-reference/versioning.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.