# Naas Docs > ABI is Agentic Brain Infrastructure: a kernel that loads modules. Agents (model + system prompt + tools) are the unit of work. Other components are classes of tools those agents use. Same kernel, three surfaces: Nexus UI (adaptive UI where humans and AI meet), process API (every process is an endpoint), and CLI. Community: you clone, install, and operate. MIT. Support is docs and GitHub. Enterprise: Naas deploys and runs ABI with you, on Naas Cloud or on-prem / air-gap. Links below are raw Markdown. Drop `.md` for the HTML page. Home is `index.md`. Full URL list: https://docs.naas.ai/sitemap.xml ## Get Started - Welcome: https://docs.naas.ai/index.md - Quickstart: https://docs.naas.ai/get-started/quickstart.md - Architecture: https://docs.naas.ai/get-started/system-architecture.md - Request path: https://docs.naas.ai/get-started/request-path.md ## ABI - Agents: https://docs.naas.ai/customize/capabilities/agents.md - Intent: https://docs.naas.ai/customize/capabilities/intent-agent.md - Agent tiers: https://docs.naas.ai/customize/capabilities/agent-tiers.md - Ontologies: https://docs.naas.ai/customize/capabilities/ontologies.md - Modules: https://docs.naas.ai/customize/capabilities/modules.md - Workflows: https://docs.naas.ai/customize/capabilities/workflows.md - Pipelines: https://docs.naas.ai/customize/capabilities/pipelines.md - Integrations: https://docs.naas.ai/customize/capabilities/integrations.md - Apps: https://docs.naas.ai/customize/capabilities/apps.md ## Customize - Installation: https://docs.naas.ai/customize/installation.md - Marketplace: https://docs.naas.ai/customize/distribution/marketplace/overview.md - Makefile: https://docs.naas.ai/customize/developer_tool_chain/makefile.md - Dependencies: https://docs.naas.ai/customize/developer_tool_chain/manage_dependencies.md - Git remote: https://docs.naas.ai/customize/developer_tool_chain/setup_git_remote.md ## Deploy - Air-gapped: https://docs.naas.ai/scale/enterprise-deployment/air-gapped.md - Secrets: https://docs.naas.ai/customize/distribution/devops/add_secrets_to_production.md - Enterprise: https://naas.ai/enterprise ## API - Overview: https://docs.naas.ai/api.md - Authentication: https://docs.naas.ai/api/authentication.md - Processes: https://docs.naas.ai/api/processes.md ## Product https://naas.ai/