# Documentation


- **Getting Started**
- [Introduction](/docs): What delta-agents is and why it exists
- [Installation](/docs/getting-started/installation): Install delta-agents and its optional dependencies
- [Quick Start](/docs/getting-started/quick-start): Build and run your first governed agent
- [Core Concepts](/docs/getting-started/core-concepts): The mental model behind delta-agents: governance, agents, actions, and workflows

- **Basics**
- [Actions](/docs/basics/actions): Define executable operations with schemas, prerequisites, and hooks
- [Agents](/docs/basics/agents): Define agents with roles, actions, workflows, and capabilities
- [Workflows](/docs/basics/workflows): Multi-phase deterministic SOPs with conditional branching and supervision
- [Skills](/docs/basics/skills): Markdown knowledge files the engine loads per turn alongside agent instructions
- [Data Sources](/docs/basics/data-sources): Governed CRUD operations on named data stores
- [Tools](/docs/basics/tools): Reusable utilities that inform agents without changing state
- [Cost and Budget](/docs/basics/cost-and-budget): Multi-axis cost model and budget enforcement across tokens, time, memory, and money
- [Human Oversight](/docs/basics/human-oversight): How human reviewers approve, reject, and manage agent actions

- **Advanced**
- [Multi-Agent](/docs/advanced/multi-agent): Delegation, supervision trees, team roster, and mailboxes
- [Channels](/docs/advanced/channels): Connect agents to messaging platforms like Slack, Teams, Discord, and Telegram
- [Memory](/docs/advanced/memory): On-demand retrieval of past context, task memory, and agent commits
- [Attachments](/docs/advanced/attachments): Send images, audio, and files to agents for processing
- [Observability](/docs/advanced/observability): Inspect task state, read audits, query logs, and monitor agent health

- **Reference**
- [API Reference](/docs/reference/api-reference): Complete reference for the delta-agents public API
- [Types](/docs/reference/types): Complete type reference for all public types
- [Adapters](/docs/reference/adapters): Storage adapters, reasoner adapters, and channel bridges
- [Configuration](/docs/reference/configuration): All engine configuration options with defaults
- [FAQ](/docs/reference/faq): Frequently asked questions about delta-agents