---
id: "entity-deepagents"
type: "entity"
entityType: "product"
canonicalName: "deepagents"
aliases: []
source_timestamps: ["§ Where Harness Engineering is Going"]
tags: ["library", "harness-engineering"]
related: ["entity-langchain", "concept-agent-harness", "concept-ralph-loop"]
canonicalUrl: "https://github.com/langchain-ai/deepagents"
---
# deepagents

## Profile

**deepagents** is a harness-building library developed by [[entity-langchain|LangChain]]. It is used to implement and research advanced harness engineering concepts — including the primitives covered in this vault: [[concept-filesystem-primitive|filesystem abstractions]], [[concept-ralph-loop|Ralph Loops]], [[concept-compaction|compaction]], and [[concept-progressive-disclosure|progressive disclosure]].

## Role in This Source

Cited as one of the concrete artifacts that operationalizes the harness engineering ideas in the article.