> ## Documentation Index
> Fetch the complete documentation index at: https://docs.phinite.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary of Terms

> Common terminology used throughout Phinite.

## Terms

* **Assistant**: An AI capability (Conversational, Email, Autonomous) powered by flows
* **Agent Graph**: Visual workflow of blocks, edges, variables, and logic
* **Agent**: An LLM-driven block with prompt, tools, variables, and RAG
* **Tool**: Reusable capability that performs external actions
* **RAG**: Retrieval-Augmented Generation; attaches knowledge collections
* **Intent**: Classification of user utterance that maps to a flow
* **Trigger**: Event that starts a flow (webhook, cron, email)
* **Build**: Versioned package of flows/tools for deployment
* **Environment**: Dev, UAT, or Production runtime context
* **Session**: A single interaction run (chat, call, or execution)
* **Token**: Unit of LLM usage for cost/usage tracking
* **Agent Registry**: Workspace catalog of Agent Cards and hosted A2A endpoints — see [Agent Registry glossary](/agent-registry/glossary)
* **Agent Card**: Registered metadata (skills, tags, visibility) for an exposed agent graph build
* **A2A (Agent-to-Agent)**: Protocol for agents to discover and call each other via hosted endpoints