VCs traditionally advise against early product expansion. But with agentic AI, which leverages existing metadata to solve new problems without building new screens, startups can rapidly add capabilities to meet customer demand for a single, unified agent, accelerating the compound startup model.

Legora has successfully scaled its product organization by hiring former YC founders to lead autonomous 'pods.' This strategy leverages the fact that founders excel in environments with high ownership and delegated responsibility, allowing them to operate their product area like a mini-startup and maintain development velocity.

Instead of building skills from scratch, first complete a task through a back-and-forth conversation with your agent. Once you're satisfied with the result, instruct the agent to 'create a skill for what we just did.' It will then codify that successful process into a reusable file for future use.

Instead of building AI skills from scratch, use a 'meta-skill' designed for skill creation. This approach consolidates best practices from thousands of existing skills (e.g., from GitHub), ensuring your new skills are concise, effective, and architected correctly for any platform.

Instead of codebases becoming harder to manage over time, use an AI agent to create a "compounding engineering" system. Codify learnings from each feature build—successful plans, bug fixes, tests—back into the agent's prompts and tools, making future development faster and easier.

YC evaluates applicants by reviewing their Claude and Codex transcripts. This reveals a founder's systems thinking, planning ability, and understanding of feature completeness—a more direct signal of building capability than a resume or GitHub profile.

"Skills" are markdown files that provide an AI agent with an expert-level instruction manual for a specific task. By encoding best practices, do's/don'ts, and references into a skill, you create a persistent, reusable asset that elevates the AI's performance almost instantly.

AI agents require deep, nuanced understanding of specific workflows. YC's methodology, which forces founders to intensely engage with customers and iterate rapidly, provides the perfect training ground to acquire this necessary domain expertise, making it an ideal environment for this new class of startups.

Treat AI 'skills' as Standard Operating Procedures (SOPs) for your agent. By packaging a multi-step process, like creating a custom proposal, into a '.skill' file, you can simply invoke its name in the future. This lets the agent execute the entire workflow without needing repeated instructions.