Module: RubynCode::Agent::DynamicToolSchema

Defined in:
lib/rubyn_code/agent/dynamic_tool_schema.rb

Overview

Filters tool schemas sent to the LLM based on detected task context. Instead of sending all 28+ tool schemas on every call, only include tools relevant to the current task. This reduces per-turn system prompt overhead by 30-50%.

Constant Summary collapse

BASE_TOOLS = 
%w[
  read_file write_file edit_file glob grep bash
].freeze
TASK_TOOLS = 
{
  testing: %w[run_specs].freeze,
  git: %w[git_status git_diff git_log git_commit].freeze,
  review: %w[review_pr git_diff].freeze,
  explore: %w[spawn_agent].freeze,
  web: %w[web_search web_fetch].freeze,
  memory: %w[memory_search memory_write].freeze,
  skills: %w[load_skill].freeze,
  tasks: %w[task].freeze,
  teams: %w[spawn_teammate send_message read_inbox].freeze,
  rails: %w[rails_generate db_migrate bundle_install bundle_add].freeze,
  background: %w[background_run].freeze,
  interaction: %w[ask_user compact].freeze
}.freeze

Class Method Summary collapse

Class Method Details

.active_tools(task_context: nil, discovered_tools: Set.new, codebase_index: nil, message: nil) ⇒ Array<String>

Returns tool names relevant to the detected task context.

Parameters:

  • task_context (Symbol, nil) (defaults to: nil) —

    detected task type

  • discovered_tools (Set<String>) (defaults to: Set.new) —

    tools already discovered this session

  • codebase_index (RubynCode::Index::CodebaseIndex, nil) (defaults to: nil) —

    optional index for deeper context detection

  • message (String, nil) (defaults to: nil) —

    original user message for index-based matching

Returns:

  • (Array<String>) —

    tool names to include in the schema



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# File 'lib/rubyn_code/agent/dynamic_tool_schema.rb', line 37

def active_tools(task_context: nil, discovered_tools: Set.new, codebase_index: nil, message: nil)
  tools = BASE_TOOLS.dup

  # Always include interaction tools
  tools.concat(TASK_TOOLS[:interaction])
  tools.concat(TASK_TOOLS[:memory])

  # Add task-specific tools
  if task_context
    context_tools = resolve_context_tools(task_context)
    tools.concat(context_tools)
  end

  # Add index-aware tools when a codebase index and message are available
  if codebase_index && message
    index_contexts = detect_index_contexts(message, codebase_index)
    index_contexts.each { |ctx| tools.concat(resolve_context_tools(ctx)) }
  end

  # Always include previously discovered tools
  tools.concat(discovered_tools.to_a)

  tools.uniq
end

.detect_context(message, codebase_index: nil) ⇒ Symbol?

Detect task context from a user message.

Parameters:

Returns:

  • (Symbol, nil) 


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# File 'lib/rubyn_code/agent/dynamic_tool_schema.rb', line 67

def detect_context(message, codebase_index: nil) # rubocop:disable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity -- context detection dispatch
  msg = message.to_s.downcase
  return :testing if msg.match?(/\b(test|spec|rspec)\b/)
  return :git     if msg.match?(/\b(commit|push|diff|branch|merge|git)\b/)
  return :review  if msg.match?(/\b(review|pr|pull request)\b/)
  return :rails   if msg.match?(/\b(migrate|generate|scaffold|rails)\b/)
  return :web     if msg.match?(/\b(search|fetch|url|http|api)\b/)
  return :explore if msg.match?(/\b(explore|architecture|structure)\b/)
  return :teams   if msg.match?(/\b(team|spawn|message|inbox)\b/)

  # Fall back to index-based detection when keyword matching yields nothing
  return nil unless codebase_index

  index_contexts = detect_index_contexts(message, codebase_index)
  index_contexts.first
end

.detect_index_contexts(message, codebase_index) ⇒ Array<Symbol>

Detect additional tool contexts based on codebase index content.

Parameters:

Returns:

  • (Array<Symbol>) —

    detected context symbols



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# File 'lib/rubyn_code/agent/dynamic_tool_schema.rb', line 89

def detect_index_contexts(message, codebase_index)
  contexts = []
  return contexts unless codebase_index

  contexts << :rails if message_mentions_model?(message, codebase_index)
  contexts << :testing if message_mentions_specced_file?(message, codebase_index)
  contexts.uniq
rescue StandardError
  []
end

.filter(all_definitions, active_names:) ⇒ Array<Hash>

Filter full tool definitions to only include active tools.

Parameters:

  • all_definitions (Array<Hash>) —

    full tool schema list

  • active_names (Array<String>) —

    names of active tools

Returns:

  • (Array<Hash>) —

    filtered definitions



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# File 'lib/rubyn_code/agent/dynamic_tool_schema.rb', line 105

def filter(all_definitions, active_names:)
  name_set = active_names.to_set
  all_definitions.select do |defn|
    name = defn[:name] || defn['name']
    name_set.include?(name)
  end
end