---
title: "Tool · Glossary · Agentic Atlas"
description: "Tool: externalized logic and boundaries the agent invokes (CLI / API / MCP / server) rather than contains; shapes how the agent can interact."
canonical: "https://agentic-atlas.dev/glossary/tool"
last-updated: "2026-09-23"
---

1. [Agentic Atlas](https://agentic-atlas.dev/)
2. [Glossary](https://agentic-atlas.dev/glossary)
3. Tool

Glossary definition

# Tool

Atlas key

tool

Catalog order

49

Used in

3 sections

Catalog revision · e0cb75881244b1a82193ca738b82a0d508dd62e822524ae82873ec79d51dbb61

externalized logic *and boundaries* the agent invokes (CLI / API / MCP / server) rather than contains; shapes how the agent can interact. (externalizing tools & systems)

[Browse the complete glossary](https://agentic-atlas.dev/glossary)

## Used in

- [The Context Economy](https://agentic-atlas.dev/nodes/context-economy#model-and-claims-the-price-list) Model and claims · 1 mention
- [LLM Dispatch](https://agentic-atlas.dev/nodes/llm-dispatch#model-and-claims) Model and claims · 1 mention
- [The Session Bill](https://agentic-atlas.dev/nodes/session-bill#context-the-session) Context · 1 mention