Sandbox
100 repos for engineer · Any agent · DocsClear
keyuchen21/
agentic-engineering-handbook

The definitive OpenAI, Claude, MCP, Harness, Evals, and Production Agent Systems learning roadmap.

187
invincible04/
awesome-loop-engineering

Build the system that prompts your agents. A teaching repo for loop engineering: chapters, an annotated reading list, copy-paste prompts, a runnable example, and a portable agent skill

57
fullbleed-engine/
fullbleed-official

Fullbleed PDF Engine - deterministic Python/Rust document generation for reports, invoices, accessible/print-ready PDF, and compiled VDP.

43
yuezhiai/
jonex
yuezhiai/jonexConnectors

All-in-One Multimodal Parsing Engine + Ontology-Powered, LLM Wiki-Driven AI-Ready Knowledge Engine

1k
PrefectHQ/
colin

A context engine that treats skills as software.

121
microsoft/
msagljs

A JavaScript graph layout engine: port of MSAGL

175
wquguru/
harness-books
wquguru/harness-booksTutorials & Guides

📚 Two books on harness engineering — the design philosophies behind Claude Code & Codex: constraints, query loops, context governance, multi-agent verification. harness-books.agentway.dev

3.1k

Cowork/Claude Code skill for Unreal Engine 5 development via MCP, pixel streaming, and Python editor scripting

37
Alegau03/
CTX

CTX - Context Runtime Engine for Coding Agents

143
ChristopherKahler/
base

AI builder operating system. Turn Claude Code from a per-session tool into a workspace that remembers, maintains itself, and never goes stale. BASE = Builder's Automated State Engine.

221
ModelEngine-Group/
nexent

Nexent is a zero-code platform for auto-generating production-grade AI agents using Harness Engineering principles — unified tools, skills, memory, and orchestration with built-in constraints, feedback loops, and control planes.

5.9k
hoangnb24/
repository-harness

Turn any repo into an agent-ready workspace for Claude Code, Codex, Cursor, and other coding agents.

1.2k
osovv/
grace-marketplace

GRACE (Graph-RAG Anchored Code Engineering): open Agent Skills for contract-driven AI code generation with semantic markup, knowledge graphs, and support for Claude Code, Codex CLI, and Kilo Code.

240
Tranz007/
ux-skills

Agent Skills for working UX designers. Challenge ideas, find blind spots, use the real design system, preserve evidence and decisions, and carry UX intent into engineering.

41
Nayshins/
ummon

The semantic layer for software engineering: Connect code to meaning, build on understanding

38
sergebulaev/
instagram-skills

Instagram marketing skills for Claude Code and Codex: captions, carousels, hooks, hashtag strategy, and a weekly plan. Draft, humanize, and publish via Publora. MIT. Content engineering by Creative Content Crafts.

50
VoltAgent/voltagentFrameworks & SDKs

AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework

11k