Polygraph

What it does

Polygraph is a meta-harness that indexes every repository you have access to—both private and open-source—and builds a unified dependency graph of how they relate via packages and APIs. This allows AI agents to plan and execute cross-repo work without being manually told where to look, effectively turning your codebase into a synthetic monorepo. Additionally, Polygraph provides persistent session memory: any session created by any developer, on any machine, or even using different agents can be resumed, referenced, or built upon. The platform also enables effortless handoff of sessions across agents, carrying repos, branches, PRs, and logs along with it.

Who it is for

Polygraph is designed for development teams that work across multiple repositories and want to leverage AI agents (such as Codex, Claude Code, or Open Code) for more ambitious tasks. It is particularly useful for teams that struggle with context switching, lost session history, or the complexity of managing dependencies across repo boundaries. The tool integrates with existing stacks like GitHub and CI systems, making it suitable for teams already using these tools.

Why it matters

AI agents today often lack visibility across repository boundaries and lose memory after each session. This limits their ability to handle complex, multi-repo tasks and forces developers to repeatedly provide context. Polygraph solves this by giving agents a holistic view of the codebase and persistent memory, enabling them to take on more ambitious tasks, reduce rework, and accelerate development. The platform also respects existing permissions and allows for testing and previewing downstream changes, ensuring safety and control.

Launch signal

Polygraph was featured on Product Hunt with 164 upvotes, indicating early traction and interest from the developer community. The product is currently free during early access, with a 30-day notice before any pricing changes. The team behind Polygraph is the Nx team, known for their work on the Nx build system, which adds credibility to the tool's focus on monorepo and dependency management.

Brand and naming

The name "Polygraph" suggests a tool that captures multiple truths or signals—here, the multiple repositories and sessions that developers work with. It is memorable and evokes the idea of a comprehensive record, aligning with the product's promise of seeing everything and forgetting nothing. The tagline "See everything, forget nothing" reinforces this positioning. The brand is positioned as a meta-harness that enhances existing AI agents rather than replacing them, which is a clear and differentiated value proposition.