> For the complete documentation index, see [llms.txt](https://learn.mechanic.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.mechanic.dev/core/tasks/code/log-objects.md).
# Log objects
Log objects are useful for recording information for later reference. They have no side-effects. Carefully chosen log objects can massively simplify post-hoc debugging, especially (as we've found) when investigating merchant bug reports.
A log object is a plain JSON object, having the following structure:
```json
{
"log": LOG_DETAILS
}
```
The log details can be any JSON value.
Log objects are most easily generated using the [**log tag**](/platform/liquid/tags/log.md).
Log objects appear wherever task run results are visible, including the task preview and when viewing an event.
A log object visible in a task preview
A log object visible in a task run's result
---
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