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Harness Sdk: Build an agent harness and control it end-to-end. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Harness Sdk. This is an automatic list. We have not written a researched verdict for Harness Sdk yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
The foundation layer for agentic intelligence.
This is an open source Python framework for building AI agents and running them in production, published by its vendor under the name Promptise. It installs as a single package and is organized into three layers: an agent that plans a task, calls tools and checks its own output; an interface layer that connects the age...
Event-sourced graph runtime for durable and stateful agents
activegraph is an open source Python runtime for long running AI agents from Yohei Nakajima, the creator of BabyAGI. It records everything an agent does in an append only event log and projects that log into a live graph of beliefs, tasks, evidence, decisions and dependencies. The graph becomes the agent's world: what ...
Official Aeon - the open-source autonomous AI agent framework.
Aeon is an open source framework for autonomous AI agents that run recurring work unattended. You give it a direction and it draws on a catalogue of 85 skills to carry out tasks such as priority briefs, market monitoring, pull request reviews, research digests and security scans, without approval loops. It runs on GitH...
AG2 (formerly AutoGen): The Open-Source AgentOS.Join us at: https://discord.gg/sNGSwQME3x
AG2 is an open source Python framework for building, orchestrating and scaling multi agent AI systems, created by the original creators of AutoGen. It lets developers define teams of specialized agents that converse, use tools and hand work to each other, and it sits at the core of a wider commercial platform the compa...
Minimal typescript agent framework that keeps it simple and gives you control - no BS
AXAR AI is a lightweight, open source framework for building agentic applications in TypeScript. It installs from npm as a single package and aims to let developers write LLM powered agents with ordinary coding practices rather than a large set of abstractions, keeping setup minimal and leaving the developer in control...
Open-source room for humans + cross-vendor AI agents.
Commonly is an open source workspace where people and AI coding agents work together in shared rooms called pods. Agents such as Claude Code, Codex, Cursor or a custom HTTP service join a pod as named teammates, each with its own memory, skills and workstation, so the project context lives with the pod rather than insi...