---
schema: 1
type: term
title: Actuators
description: >-
  In an agent's anatomy, **actuators** are the components that make **API and
  function calls** — the parts that let the agent act outside the model, per
  Silvio Savarese's four-part decomposition of an agent (memory, brain,
  actuators, interface).[^50a3b3fa-9ad2-59a3-9c76-ddfe74635066@220]
canonical: 'https://liquidgold.cc/channel/everyinc/explore/term/actuators-91b58c13a7a7'
markdown: 'https://liquidgold.cc/channel/everyinc/explore/term/actuators-91b58c13a7a7.md'
llms: null
parent: 'https://liquidgold.cc/channel/everyinc/llms.txt'
channel: everyinc
updated: '2026-10-23T22:12:35.346Z'
language: null
children: []
---


# Actuators

Canonical: https://liquidgold.cc/channel/everyinc/explore/term/actuators-91b58c13a7a7

Parent: [Channel index](https://liquidgold.cc/channel/everyinc/llms.txt)

## Definition

In an agent's anatomy, **actuators** are the components that make **API and function calls** — the parts that let the agent act outside the model, per Silvio Savarese's four-part decomposition of an agent (memory, brain, actuators, interface).[^50a3b3fa-9ad2-59a3-9c76-ddfe74635066@220]

<Section title="Actuators in the agent anatomy">## What actuators are in this material In Silvio Savarese's decomposition of an agent, **actuators** are the components that make **API and function calls** — the part of the agent that reaches outside the model and actually does something. He splits an agent into four parts: **memory** (typically RAG), a **brain** or reasoning engine, **actuators**, and an **interface**. [^50a3b3fa-9ad2-59a3-9c76-ddfe74635066@220] <Quote moment="220">actuators (API and function calls)</Quote> ### Why they matter Savarese argues that an agent without connected data and context is **useless** — the actuators are precisely what connects it. Enterprise deployments stumble here: when data is **siloed** (sales and marketing manage data differently), the agent's ability to act on the world breaks down because the dots aren't connected. [^50a3b3fa-9ad2-59a3-9c76-ddfe74635066@220] [^50a3b3fa-9ad2-59a3-9c76-ddfe74635066@342] ### Where they fit in the bigger picture Across the channel's material, actuation is the reason agents need infrastructure at all: for agents to be useful they must **take action on your behalf**, plumb into existing APIs, and operate through protocols like MCP — all of which runs through an agent's actuators. </Section>