Class: Rubino::Agent::Definition

Inherits:
Object
  • Object
show all
Defined in:
lib/rubino/agent/definition.rb

Overview

Defines an agent type with its own model, system prompt, permissions, and tools. Agents can be primary (user-facing) or subagents (invokable by other agents).

Constant Summary collapse

SUBAGENT_ONLY_TOOLS =

Tools that ONLY make sense for a subagent and must be hidden from a primary/top-level agent. ask_parent escalates a question to the PARENT — a top-level agent has no parent, so exposing it there would be a dead tool. Subagents keep it; everyone else drops it. This is the single enforcement point and is UNCHANGED by S1 (re-enabling nesting does not expose ask_parent to top-level agents).

%w[ask_parent].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attrs = {}) ⇒ Definition

Types: :primary (user-switchable), :subagent (invokable), :utility (hidden)



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# File 'lib/rubino/agent/definition.rb', line 12

def initialize(attrs = {})
  @name = attrs[:name]
  @type = attrs[:type] || :primary
  @model = attrs[:model]
  @system_prompt = attrs[:system_prompt]
  @description = attrs[:description] || ""
  @permissions = attrs[:permissions] || {}
  @mcp_servers = attrs[:mcp_servers] # :all or array of server names
  @tools = attrs[:tools] || :all # :all, :read_only, or array of tool names
  @hidden = attrs[:hidden] || false
  @max_turns = attrs[:max_turns]
end

Instance Attribute Details

#description ⇒ Object (readonly)

Returns the value of attribute description.



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# File 'lib/rubino/agent/definition.rb', line 8

def description
  @description
end

#hidden ⇒ Object (readonly)

Returns the value of attribute hidden.



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# File 'lib/rubino/agent/definition.rb', line 8

def hidden
  @hidden
end

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/rubino/agent/definition.rb', line 8

def model
  @model
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rubino/agent/definition.rb', line 8

def name
  @name
end

#permissions ⇒ Object (readonly)

Returns the value of attribute permissions.



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# File 'lib/rubino/agent/definition.rb', line 8

def permissions
  @permissions
end

#system_prompt ⇒ Object (readonly)

Returns the value of attribute system_prompt.



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# File 'lib/rubino/agent/definition.rb', line 8

def system_prompt
  @system_prompt
end

#tools ⇒ Object (readonly)

Returns the value of attribute tools.



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# File 'lib/rubino/agent/definition.rb', line 8

def tools
  @tools
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/rubino/agent/definition.rb', line 8

def type
  @type
end

Instance Method Details

#hidden? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubino/agent/definition.rb', line 33

def hidden?
  @hidden
end

#max_turns ⇒ Object

Returns the max turns for this agent (falls back to global config)



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# File 'lib/rubino/agent/definition.rb', line 54

def max_turns
  @max_turns || Rubino.configuration.agent_max_turns
end

#mcp_servers ⇒ Object

Which MCP servers this agent may use: :all, or an array of server names. An explicit value passed in code wins; otherwise the ‘agents.<name>.mcp_servers` block in config.yml applies (#92), and absent both the agent sees every server. YAML has no symbols, so the literal string “all” from config normalizes to :all — the value #resolved_tools compares against.



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# File 'lib/rubino/agent/definition.rb', line 43

def mcp_servers
  return @mcp_servers if @mcp_servers

  configured = Rubino.configuration.dig("agents", name.to_s, "mcp_servers")
  case configured
  when Array then configured.map(&:to_s)
  else :all
  end
end

#primary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubino/agent/definition.rb', line 25

def primary?
  @type == :primary
end

#resolved_model ⇒ Object

Returns the resolved model (falls back to global default)



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# File 'lib/rubino/agent/definition.rb', line 59

def resolved_model
  @model || Rubino.configuration.model_default
end

#resolved_tools ⇒ Object 



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# File 'lib/rubino/agent/definition.rb', line 79

def resolved_tools
  tools =
    case @tools
    when :all
      Tools::Registry.enabled_tools
    when :read_only
      Tools::Registry.enabled_tools.select { |t| t.risk_level == :low }
    when Array
      @tools.filter_map { |name| Tools::Registry.find(name) }
    else
      Tools::Registry.enabled_tools
    end

  # Per-agent MCP scoping (#92/#173): every consumer of this agent's tool
  # set (Lifecycle#load_tools, prompt assembler) goes through here, so
  # filtering MCP wrappers HERE is what actually keeps an out-of-scope
  # server's tools away from the model.
  tools = reject_unscoped_mcp_tools(tools)

  # ask_parent is subagent-only; a primary/top-level agent has no parent.
  # Nesting is otherwise allowed for everyone — the delegation tools stay.
  if subagent?
    tools
  else
    tools.reject { |t| SUBAGENT_ONLY_TOOLS.include?(t.name) }
  end
end

#subagent? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubino/agent/definition.rb', line 29

def subagent?
  @type == :subagent
end