Marcus Chang

@hardness1020 · User

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Building AI agents and developer tools · agent architectures, memory systems, and workflow engines · writing tutorials that teach agents from scratch

SF Bay Area61 followers49 repositories

Repositories

hardness1020/Leeway

A workflow-driven AI agent framework that executes YAML-defined decision trees.

★ 115PythonForks 19

hardness1020/promptfoo

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.

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hardness1020/E2B

Open-source, secure environment with real-world tools for enterprise-grade agents.

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hardness1020/mem0

The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

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hardness1020/InsForge

The all-in-one, open-source backend platform for agentic coding. InsForge gives your coding agent database, auth, storage, compute, hosting, and AI gateway to ship full-stack apps end-to-end.

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hardness1020/cognee

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

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hardness1020/langfuse

🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integrates with OpenTelemetry, LangChain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

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hardness1020/career-ops

AI-powered job search system built on Claude Code. 14 skill modes, Go dashboard, PDF generation, batch processing.

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hardness1020/awesome-agentic-ai-zh

A trilingual (繁中 / English / 简中) learning roadmap for agentic AI: from LLM basics to multi-agent systems, with 240+ curated resources and hands-on examples. 中文 AI agent 學習地圖。

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