[docs] Add RubyLLM::Instrumentation and RubyLLM::Monitoring to ecosystem

docs/_reference/ecosystem.md

@@ -2,7 +2,7 @@
 layout: default
 title: RubyLLM Ecosystem
 nav_order: 3
-description: Extend RubyLLM with MCP servers, structured schemas, OpenTelemetry instrumentation and community-built tools for production AI apps.
+description: Extend RubyLLM with MCP servers, structured schemas, instrumentation, monitoring and community-built tools for production AI apps.
 ---
 
 # {{ page.title }}
@@ -26,6 +26,8 @@ After reading this guide, you will know:
 
 * What the Model Context Protocol (MCP) is and how `RubyLLM::MCP` brings it to Ruby
 * How `RubyLLM::Schema` simplifies structured data definition for AI applications
+* How `RubyLLM::Instrumentation` exposes RubyLLM events through ActiveSupport notifications
+* How `RubyLLM::Monitoring` provides dashboards and alerts for RubyLLM activity
 * How `RubyLLM::RedCandle` enables local model execution from Ruby
 * How OpenTelemetry instrumentation for RubyLLM provides observability into your LLM applications
 * Where to find community projects and how to contribute your own
@@ -97,6 +99,68 @@ For detailed documentation and examples, visit the [RubyLLM::Schema repository](
 
 ---
 
+## RubyLLM::Instrumentation
+
+**ActiveSupport::Notifications instrumentation for RubyLLM**
+
+[`RubyLLM::Instrumentation`](https://github.com/sinaptia/ruby_llm-instrumentation) is a Rails plugin that instruments RubyLLM events with the built-in [ActiveSupport::Notifications](https://api.rubyonrails.org/classes/ActiveSupport/Notifications.html) API.
+
+### Why Use RubyLLM::Instrumentation?
+
+When building LLM applications, you may need custom monitoring, analytics, or logging pipelines based on your RubyLLM activity.
+
+### Key Features
+
+- Event instrumentation for key RubyLLM operations
+- Native integration with `ActiveSupport::Notifications`
+- Event hooks for chat completion, tools, embeddings, images, moderation, and transcription
+- Easy integration with existing Rails observability stacks
+
+### Supported Events
+
+- `complete_chat.ruby_llm` when `RubyLLM::Chat#ask` is called
+- `execute_tool.ruby_llm` when a tool call is executed
+- `embed_text.ruby_llm` when `RubyLLM::Embedding.embed` is called
+- `paint_image.ruby_llm` when `RubyLLM::Image.paint` is called
+- `moderate_text.ruby_llm` when `RubyLLM::Moderation.moderate` is called
+- `transcribe_audio.ruby_llm` when `RubyLLM::Transcription.transcribe` is called
+
+### Installation
+
+```bash
+gem install ruby_llm-instrumentation
+```
+
+For detailed documentation and examples, visit the [RubyLLM::Instrumentation repository](https://github.com/sinaptia/ruby_llm-instrumentation).
+
+---
+
+## RubyLLM::Monitoring
+
+**RubyLLM monitoring within your Rails application**
+
+[`RubyLLM::Monitoring`](https://github.com/sinaptia/ruby_llm-monitoring) is a Rails engine that provides a dashboard for cost, throughput, response time, and error aggregations. It also supports configurable alerts through channels such as email or Slack.
+
+### Why Use RubyLLM::Monitoring?
+
+When running RubyLLM-powered features in production, you need ongoing visibility into performance, cost, and failure patterns.
+
+### Key Features
+
+- Captures events from `RubyLLM::Instrumentation`
+- Dashboard metrics for cost, throughput, latency, and error rates
+- Rule-based alerting for operational thresholds and regressions
+
+### Installation
+
+```bash
+gem install ruby_llm-monitoring
+```
+
+For detailed documentation and examples, visit the [RubyLLM::Monitoring repository](https://github.com/sinaptia/ruby_llm-monitoring).
+
+---
+
 ## RubyLLM::RedCandle
 
 **Local LLM Execution with Quantized Models**
@@ -188,6 +252,6 @@ The RubyLLM ecosystem is growing! If you've built a library or tool that extends
 
 - Opening a PR to add your project to this page
 - Sharing it in our GitHub Discussions
-- Using the `ruby_llm` topic on your GitHub repository
+- Using the `ruby-llm` topic on your GitHub repository
 
 Together, we're building a comprehensive ecosystem for LLM-powered Ruby applications.