# Concepts

The core ideas behind Agent Smith.

- **[Pipeline System](pipeline-system.md)** — Commands, handlers, presets, and how they chain together
- **[Phases & Runs](phases-and-runs.md)** — How Agent Smith tracks its own work: planning, execution, and results
- **[Multi-Skill Architecture](multi-skill.md)** — Role-based triage, skill rounds, and convergence
- **[Decision Logging](decisions.md)** — Why the agent made each choice, not just what it did
- **[Cost Tracking](cost-tracking.md)** — Token usage, pricing, and result.md frontmatter
- **[Interactive Dialogue](interactive-dialogue.md)** — Structured Q&A between agent and human across all channels
- **[Knowledge Base](knowledge-base.md)** — LLM-compiled project wiki from accumulated run data
