Class: McpToolkit::UnknownResourceMessage

Inherits:
Object
  • Object
show all
Defined in:
lib/mcp_toolkit/unknown_resource_message.rb

Overview

Builds the McpToolkit::Registry::UnknownResource message from a bad name and the registered resource names: it states the bad name, then (a) suggests the nearest registered name(s) for a near-miss — via Ruby's stdlib DidYouMean spell checker when available, else a dependency-free prefix/substring + edit-distance fallback — and (b), when the catalog is short, lists them all, so a caller (typically an MCP agent that guessed a name) can self-correct without another round-trip to the resources tool.

Constant Summary collapse

FULL_LIST_MAX = 
10
MAX_SUGGESTIONS = 
3

Instance Method Summary collapse

Constructor Details

#initialize(name, resource_names) ⇒ UnknownResourceMessage

Returns a new instance of UnknownResourceMessage.



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# File 'lib/mcp_toolkit/unknown_resource_message.rb', line 20

def initialize(name, resource_names)
  @name = name
  @resource_names = resource_names
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/mcp_toolkit/unknown_resource_message.rb', line 25

def build
  message = "unknown resource: #{@name.inspect}"
  return message if @resource_names.empty?

  suggestions = suggestions_for(@name.to_s, @resource_names)
  message += ". Did you mean #{quote_join(suggestions)}?" if suggestions.any?
  message += " Registered resources: #{quote_join(@resource_names.sort)}." if @resource_names.size <= FULL_LIST_MAX
  message
end