Module: RailsAiContext::Instrumentation

Defined in:
lib/rails_ai_context/instrumentation.rb

Overview

Bridges MCP gem instrumentation to ActiveSupport::Notifications. Enables Rails apps to subscribe to MCP events (tool calls, resource reads, etc.).

Constant Summary collapse

EVENT_PREFIX = 
"rails_ai_context"

Class Method Summary collapse

Class Method Details

.callback ⇒ Object

Returns a lambda for MCP::Configuration#instrumentation_callback. Instruments each MCP method call as an ActiveSupport::Notifications event.



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# File 'lib/rails_ai_context/instrumentation.rb', line 11

def self.callback
  ->(data) {
    return unless defined?(ActiveSupport::Notifications)

    method = data[:method] || "unknown"
    event_name = "#{EVENT_PREFIX}.#{method.tr("/", ".")}"

    ActiveSupport::Notifications.instrument(event_name, data)
  }
end