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Achievement: Starstruckx3Achievement: QuickdrawAchievement: Pair Extraordinairex3Achievement: Pull Sharkx2Achievement: YOLO

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hardness1020/README.md

Hi, I'm Marcus Chang 👋

Building AI agents and developer tooling · SF Bay Area

LinkedIn Email

🚀 My Top Projects

Agent Tutorial

Agent Engine

  • GitHub Stars Leeway: A workflow-driven AI agent framework that executes YAML-defined decision trees.

🌱 Open Source Contributions

  • GitHub Stars CocoIndex: 4 merged PRs · Runtime reliability, error handling, Python/Rust interop
  • GitHub Stars learn-claude-code: 5 merged PRs · Build a Claude Code–style agent harness from scratch
  • GitHub Stars Promptfoo: 1 merged PR · Fixed glob expansion for single-string test configurations
  • GitHub Stars Haystack: 1 merged PR · Fixed missing tracebacks in logger.exception()
  • GitHub Stars OpenSandbox: 1 merged PR · Fixed encoded path and query forwarding in HTTP/WebSocket sandbox proxies
  • GitHub Stars E2B: Bug report & Proposed fix · .dockerignore handling in JS/Python SDKs; resolved upstream (Issue · PR)

Pinned Loading

  1. learn-agent-architecture learn-agent-architecture Public

    Learn AI agents from scratch.

    Python 1.1k 113

  2. learn-deepseek-harness learn-deepseek-harness Public

    Learn DeepSeek Harness from scratch.

    Python 48 7

  3. Leeway Leeway Public

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

    Python 116 19