{"repo":"FareedKhan-dev/building-claude-from-scratch","free":true,"listed":false,"github":"https://github.com/FareedKhan-dev/building-claude-from-scratch","clone":"git clone https://github.com/FareedKhan-dev/building-claude-from-scratch.git","description":"Building a Claude-like agentic system.","language":"Jupyter Notebook","stars":59,"topics":["claude","claude-code","claude-skills","deepseek","openai"],"license":"MIT","category":"ai-agents","readme_excerpt":"Building Claude from Scratch A complete reproducible implementation of the 62 components that define Claude's thinking and agentic behavior, built on open source models and tested end to end on a real research paper reproduction task. --- Table of Contents 1. What This Repository Is 2. The Architecture 3. The 8 Phases of the Harness 4. The Real World Problem We Solve 5. The 62 Components Mapped 6. Quick Start 7. How to Read the Notebook 8. Who This Is For 9. Results from the End to End Run 10. Project Structure 11. Companion Blog Post 12. Citation and Acknowledgements --- What This Repository Is In practice, when building agentic systems, AI models are rarely the bottleneck anymore. The harness around them is. Anthropic spent two years building that harness for Claude, the orchestration code that picks the right tools and grades its work before declaring success. This repository reproduces that harness from scratch on an open source model. Every one of the 62 components that define Claude's thinking approach is implemented in a single executable Jupyter notebook, applied to a real research paper reproduction task, and graded mechanically at the end. The model came from training. The reproducibility came from architecture. This repository is that architecture, fully runnable. --- The Architecture The 62 components are distributed across 4 main principles: Principle What It Does Key Components ----------- -------------- ---------------- Cognition Turns a chat completion into a ","default_branch":null,"files":null,"tree":[],"storefront":"/r/FareedKhan-dev","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/FareedKhan-dev/building-claude-from-scratch/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}