# Build, Configure, or Use As-Is: The Agentic Harness

DevFeed: [Build, Configure, or Use As-Is: The Agentic Harness](<https://devfeed.tech/articles/build-configure-or-use-as-is-the-agentic-harness-18292.md>)

Original publisher: [Read original article](<https://www.decodingai.com/p/agentic-harness-system-design>)

Author: Paul Iusztin

Published: 2026-06-09T05:00:28Z

Content type: tutorial

Language: en

Sources: [Decoding ML](<https://devfeed.tech/sources/decoding-ml.md>)

Topics: [Tool](<https://devfeed.tech/topics/tool.md>), [AI Engineering](<https://devfeed.tech/topics/ai-engineering.md>), [codex](<https://devfeed.tech/topics/codex.md>), [Claude Code](<https://devfeed.tech/topics/claude-code.md>), [Pydantic](<https://devfeed.tech/topics/pydantic.md>), [TypeScript](<https://devfeed.tech/topics/typescript.md>)

Tags: [agentic](<https://devfeed.tech/tags/agentic.md>), [agents](<https://devfeed.tech/tags/agents.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-engineering](<https://devfeed.tech/tags/ai-engineering.md>), [architecture](<https://devfeed.tech/tags/architecture.md>), [article](<https://devfeed.tech/tags/article.md>), [building](<https://devfeed.tech/tags/building.md>), [memory](<https://devfeed.tech/tags/memory.md>), [permission](<https://devfeed.tech/tags/permission.md>), [sandbox](<https://devfeed.tech/tags/sandbox.md>), [sandboxes](<https://devfeed.tech/tags/sandboxes.md>), [tools](<https://devfeed.tech/tags/tools.md>)

## AI overview

This article explains the shared system design of agentic harnesses, covering tools, agent catalogs, subagents, skills, memory, sandboxes, and permissions. It argues that these harness components are increasingly standardized, while the main differentiation lies in the context and business layers built on top.

## Source excerpt

A component-by-component teardown of an agentic harness, from tools and skills to memory, sandbox, and permissions.