> ## Documentation Index
> Fetch the complete documentation index at: https://docs.appsignal.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom instrumentation for Ruby

AppSignal provides many ways to provide more insights in your application by
adding more instrumentation or tagging the data that appears in the UI at
AppSignal.com.

* [Integrating AppSignal](/ruby/instrumentation/integrating-appsignal)
* [Instrumentation](/ruby/instrumentation/instrumentation)
* [Exception handling](/ruby/instrumentation/exception-handling)
* [Breadcrumbs](/ruby/instrumentation/breadcrumbs)
* [Ignore instrumentation](/ruby/instrumentation/ignore-instrumentation)
* [Scripts and background jobs](/ruby/instrumentation/background-jobs)
* [Method instrumentation](/ruby/instrumentation/method-instrumentation)
* [Event formatters](/ruby/instrumentation/event-formatters)
* [Minutely probes](/ruby/instrumentation/minutely-probes)
* [Request queue time](/ruby/instrumentation/request-queue-time)
* [Custom marker reporting](/ruby/instrumentation/custom-markers)
* [Command line tool](/ruby/command-line)

## Contact us

Don't hesitate to [contact us](mailto:support@appsignal.com) if you run into
any issues while implementing custom instrumentation. We're here to help.