Harness Engineering
🐎 Ryan Lopopolo’s anthology, field guide, and agent context bundle for harness engineering
AI toolsOpen source
2.7Kstars
by lopopolo
AI tools
Products built around LLMs, agents and generative models.
New and established products are included. Unknown launch dates do not qualify for age filters.
24+ results on this page
Harness Engineering
OpenGym
Open-source gym & body-weight tracker, now in the App Store (iPhone + Apple Watch) and as an Android APK. Plan routines,
AI toolsOpen source
15.4Kstars
by DuarteSantos8
Turbo Fieldfare
Gemma 4 26B-A4B inference in ~2 GB of RAM on any M-series MacBook
AI toolsOpen source
7Kstars
by drumih
KiroCrew
A persistent workspace for development work that self-improves and continues beyond one session.
AI toolsOpen source
4.6Kstars
by kirodotdev
Bethechatbot
Be the ChatBOT
AI tools
55HN
by keito
Drama Skills
开源 AI 短剧/漫剧创作 skill 合集：剧本、角色资产、分镜 storyboard、图片/视频提示词、审查，适配 Claude Code 与 Codex | Open-source AI short drama / micro-dra
AI toolsOpen source
3.3Kstars
by zenstory-ai
Lieflat Charts
Data visualization Skill for AI Agents, turning data into polished, interactive HTML charts. 面向 AI Agents 的数据可视化 Skill，将
AI toolsOpen source
6.4Kstars
by larashero3-dotcom
Coasty
An API for computer-use agents
YS26AI tools
44HN
by nkov47
Treg
OpenRouter for agent tools. Join community here: https://discord.gg/6mQYYfFMAn
AI toolsOpen source
6Kstars
by superdesigndev
LoopGain
Stop agent loops with control theory, not max_iterations
AI tools
31HN
by fitz2882
Img2threejs
Rebuild the object in a reference image as a code-only, procedural, quality-gated, animation-ready Three.js model. Token
AI toolsOpen source
19.1Kstars
by img2threejs
Grok Build
SpaceXAI's coding agent harness and TUI. Fullscreen, mouse interactive, extensible.
AI toolsOpen source
27.5Kstars
by xai-org
Agnost AI
Extract user feedback from agent conversations
YS26AI tools
85HN
by laalshaitaan
Libargus.Cc
Low-latency local LLM runner via OpenJDK Panama FFM (Java 22)
AI tools
38HN
by KingJoker
Oodle.ai
$10 per million agent traces
AI tools
31HN
by kirankgollu
Ai Trains Ai
I RL-trained an agent that trains models with RL (for ~$1.3k)
AI tools
107HN
by Danau5tin
Sx 2.0
Share AI skills with your team through a Dropbox folder
AI tools
44HN
by detkin
Codex Security
OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https:
AI toolsOpen source
11.2Kstars
by openai
Nobie
an Excel-compatible runtime for agents and humans
AI tools
96HN
by matthewgapp
BillAI Bass
BillAI Bass, an AI-Powered Big Mouth Billy Bass Using Strands Agents
AI tools
72HN
by mtw14
Jacquard
Jacquard, a programming language for AI-written, human-reviewed code
AI tools
102HN
by jbwinters
Clawk
Give coding agents a disposable Linux VM, not your laptop
AI tools
226HN
by celrenheit
AVA AI Voice Agent For Asterisk
Self-hosted voice AI agent for Asterisk/FreePBX
AI tools
32HN
by hkjarral
Aos Ce
AOS Community Edition: the open agent operating system.
AI toolsOpen source
8.5Kstars
by unicity-aos