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Most Capable Agent System Prompt

Most Capable Agent System Prompt is a comprehensive prompt designed for AI coding agents to build a self-improving agentic operating system capable of handling software engineering, research, automation, and complex multi-month projects. The prompt emphasizes practical implementation over theoretical architecture, with clear design principles, reliability engineering, and measurable progress tracking.

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Built for AI agentsACO · 25000 tokens

Summary

Most Capable Agent System Prompt is a comprehensive prompt designed for AI coding agents to build a self-improving agentic operating system capable of handling software engineering, research, automation, and complex multi-month projects. The prompt emphasizes practical implementation over theoretical architecture, with clear design principles, reliability engineering, and measurable progress tracking.

Tags

agentic-system · ai-agent · system-prompt · self-improving · software-engineering · automation

Key entities

Claude Code (technology, 0.95) · OpenAI Codex (technology, 0.95) · Cursor (technology, 0.95) · Claude Agent SDK (technology, 0.9) · OpenHands (technology, 0.85) · self-improving agentic system (concept, 0.95) · task decomposition (concept, 0.9) · verification loop (concept, 0.9) · GitHub (location, 0.95)

Classification

framework · language en · status final

Provenance

claude-haiku-4-5 via @stacklist/be@0.1.0, confidence 0.85, 29 Jun 2026