# get_api_version · FT4 Rell API · Chromia Docs (concept)

> @mount("ft4.get_ api_ version")
query get_ api_ version(): integer Returns the API version of the Rell FT4 library

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.version/get_api_version/

QUERY

# get\_api\_version

```signature
@mount("ft4.get_api_version")
query get_api_version(): integer
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/version.rell#lines-8)

Returns the API version of the Rell FT4 library

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.version/get_api_version.html)Generated API reference, mirrored from the live docs