# Glossary

> The words used by Agent host in plain language: agent, definition, version, connector, safe tool, risky tool, approval, digest and tier.

Source: https://agentaloo.tech/docs/glossary/

**Agent.** A hosted assistant defined as data.

**Approval.** A decision by a person about a suspended risky call.

**Connector.** An MCP server an agent may call.

**Definition.** The data that says what an agent is.

**Digest.** The last result of a scheduled run.

**Risky tool.** A tool that waits for approval.

**Safe tool.** A tool the agent may call alone.

**Tier.** The size of the model: haiku, sonnet or opus.

**Version.** An immutable saved definition.