> For the complete documentation index, see [llms.txt](https://docs.nimbus.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nimbus.dev/resources/ref.attributes.md).

# Nimbus Attributes

Nimbus adds custom attributes to logs that it processes

### nimdata

* type: list

Contains the raw values of reduced logs

### nimkind

* type: enum
* values:
  * `opt`: processed by a nimbus transform
  * `noopt`: not processed by nimbus transform
  * `error`: detected as an error by nimbus

### nimsize

* optional (only present if logs have been reduced)
* type: int

Number of items in `data` field

### nimmatch

* optional (only present if logs match a transform)

Name of the transform that has processed the log