# Lean Squad automates formal verification across three codebases and finds drone autopilot bugs

DevFeed: [Lean Squad automates formal verification across three codebases and finds drone autopilot bugs](<https://devfeed.tech/articles/lean-squad-exploring-automated-software-verification-with-near-zero-human-labour-67119.md>)

Original publisher: [Read original article](<https://githubnext.com/posts/dsyme-lean-squad-automated-verification/>)

Published: 2026-04-20T00:00:00Z

Content type: article

Language: en

Sources: [GitHub Next](<https://devfeed.tech/sources/github-next.md>)

Topics: [Formal verification](<https://devfeed.tech/topics/formal-verification.md>), [Lean](<https://devfeed.tech/topics/lean.md>), [Loop Engineering](<https://devfeed.tech/topics/loop-engineering.md>), [GitHub](<https://devfeed.tech/topics/github.md>)

Tags: [agentic](<https://devfeed.tech/tags/agentic.md>), [drone](<https://devfeed.tech/tags/drone.md>), [lean-4](<https://devfeed.tech/tags/lean-4.md>), [verification](<https://devfeed.tech/tags/verification.md>)

## AI overview

Lean Squad is a GitHub Agentic Workflow that automates codebase research, specification writing, and theorem proving in Lean 4 with little human involvement. Across three real-world codebases, it produced more than 1,200 machine-checked theorems and found bugs in a drone autopilot.

## Source excerpt

Lean Squad: Exploring Automated Software Verification with Near-Zero Human Labour