Module: Clacky::Agent::SystemPromptBuilder

Included in:
Clacky::Agent
Defined in:
lib/clacky/agent/system_prompt_builder.rb

Overview

System prompt construction Builds system prompt by composing layers:

1. Agent-specific system_prompt.md  (role & responsibilities)
2. base_prompt.md                   (universal rules: todo manager, tool usage, etc.)
3. Project rules                    (.clackyrules / .cursorrules / CLAUDE.md)
4. SOUL.md                          (agent personality — user override or built-in default)
5. USER.md                          (user profile — user override or built-in default)
6. Skills context                   (available skills list)

Constant Summary collapse

MAX_MEMORY_FILE_CHARS =

Max characters loaded from each agent file (SOUL.md / USER.md)

1000

Instance Method Summary collapse

Instance Method Details

#build_system_prompt ⇒ String

Build complete system prompt with project rules and skills

Returns:

  • (String) —

    Complete system prompt



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# File 'lib/clacky/agent/system_prompt_builder.rb', line 21

def build_system_prompt
  parts = []

  # Layer 1: agent-specific role & responsibilities
  parts << @agent_profile.system_prompt

  # Layer 2: universal behavioral rules (todo manager, tool usage, etc.)
  base = @agent_profile.base_prompt
  parts << base unless base.empty?

  # Layer 3: project-specific rules from working directory
  project_rules = load_project_rules
  if project_rules
    parts << format_section("PROJECT-SPECIFIC RULES (from #{project_rules[:source]})",
                            project_rules[:content],
                            footer: "IMPORTANT: Follow these project-specific rules at all times!")
  end

  # Layer 4 & 5: SOUL.md and USER.md (with built-in defaults as fallback)
  soul = truncate(@agent_profile.soul, MAX_MEMORY_FILE_CHARS)
  parts << format_section("AGENT SOUL (from ~/.clacky/agents/SOUL.md)", soul) unless soul.empty?

   = truncate(@agent_profile., MAX_MEMORY_FILE_CHARS)
  parts << format_section("USER PROFILE (from ~/.clacky/agents/USER.md)", ) unless .empty?

  # Layer 6: skills context
  skill_context = build_skill_context
  parts << skill_context if skill_context && !skill_context.empty?

  parts.join("\n\n")
end