Cosign.ai

Developer Tools

AI legal tools for startups that move fast

About

Cosign.ai empowers founders and small teams to manage legal tasks efficiently. Quickly create SAFEs that mirror YC standards, leverage AI to dissect contracts, and conduct product risk assessments directly within Slack or GitHub prior to releasing new features. Eschewing typical legal chat, Cosign integrates seamlessly into existing team workflows, automating routine legal processes such as contract analysis, document creation, and compliance checks. It's designed for startups seeking rapid legal support without incurring substantial legal expenses.

Launched

March 10, 2026Week 1

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