Zero

Zero is a groundbreaking experimental programming language from Vercel designed for a future where program construction is primarily handled by agents. Its core paradigm shifts from text-based source code to a semantic program graph. Key features include: • Agents query and patch a semantic program graph • Compiler rigorously checks every change to the graph • Humans provide high-level outcome requests • Readable code projections are available for human review • Optimized for token efficiency, rapid builds, and low memory footprint This language redefines the developer experience by placing the compiler directly in the agent's development loop. Instead of traditional methods where agents write text that is then formatted, checked, and built, Zero allows agents to directly submit checked changes to the program graph. This significantly tightens the feedback loop and ensures that edits are semantically valid before they are committed. The system is built for robust integrity. Graph patches target specific semantic nodes and fields, protected by graph hashes and expected values. This design prevents stale or invalid edits from affecting the program, ensuring high reliability. While agents manipulate the graph, human-readable `.0` projections are always available for easy review and occasional manual adjustments, bridging the gap between agentic and human development. Zero is ideal for forward-thinking engineering teams and researchers exploring agent-centric development paradigms. It's a foundational tool for creating systems where agents autonomously evolve and maintain software, streamlining the development process for complex applications and reducing the potential for human error in code generation.