---
title: Advanced topics
description: Adding additional context, Custom instrumentation. 
url: https://www.elastic.co/elastic/docs-builder/docs/2422/reference/apm/agents/ruby/advanced-topics
---

# Advanced topics
- [Adding additional context](https://www.elastic.co/elastic/docs-builder/docs/2422/reference/apm/agents/ruby/context)
- [Custom instrumentation](https://www.elastic.co/elastic/docs-builder/docs/2422/reference/apm/agents/ruby/custom-instrumentation)