Technical Report

Agent SDKs for the Rest of Us

by Josselin Perrus · meaningfool.net · @meaningfool
Subject Agent Frameworks
Date Feb 2026
Sections 07
01

Agent Frameworks Landscape

A mental map for navigating the agent framework landscape. Orchestration frameworks vs Agent SDKs vs Agent Servers.

Agent Frameworks Landscape
02

What's an agent, anyway?

An LLM running tools in a loop. Let's unpack the three primitives: models, tools, and the agentic loop.

What's an agent, anyway?
03

Where orchestration lives

App-driven vs. agent-driven control flow: who owns the orchestration, the app or the agent?

Where orchestration lives
04

Two tools to rule them all

Specialized tools encode assumptions about how things should be done. Bash and the filesystem are universal primitives that don't limit the agent.

Two tools to rule them all
05

Agent SDK to Agent Server: crossing the service boundary

From embedded library to networked service. What capabilities you need to build when crossing the service boundary.

Agent SDK to Agent Server: crossing the service boundary
06

Agent architectures by example

Four real-world projects to showcase different architectural choices: from job agents toOpenClaw personal agents.

Agent architectures by example
07

Going further

Curated references to get deeper into the agent frameworks.

Going further