Perseus is a codebase search and context engine for coding agents, providing cited code context before edits to reduce errors and improve efficiency. It integrates into coding sessions, surfacing relevant files, tests, and dependency chains, and can generate verification plans from diffs. The platform is designed for developers and AI-assisted coding workflows.
Funding
Funding not disclosed
Founders
Product
Problem
Coding agents often work with incomplete or inaccurate context, leading to inefficient edits, missed dependencies, and broken code. Without a reliable way to search and rank relevant code paths, agents may make changes that conflict with existing architecture or fail to update all necessary files, increasing debugging time and reducing code quality.
Solution
Perseus provides a codebase search and context engine that enriches coding agents with cited code context before they make edits. It ranks path signals to show which files own decisions, which enforce boundaries, and which are merely transport, helping agents understand the architecture before patching. The system identifies related callers, tests, and risk areas, and can generate a minimal verification plan from a current diff. By narrowing the read to relevant files and tests, Perseus helps agents make smaller, safer changes with confidence.
Target Audience
Primary users are developers and engineering teams using AI-assisted coding agents who need accurate, context-rich codebase search to improve edit quality and reduce debugging cycles.
Features
- Ranked path signals that show file ownership, enforcement boundaries, and transport roles to guide agent edits
- Automatic identification of related callers, tests, and dependency chains for a given code change
- Diff-based verification plan generation that turns the current diff into the smallest useful test set
- Integration with coding sessions to provide cited code context before edits, reducing unnecessary exploration
- Support for backend routes, console proxies, and server helpers with clear contract enforcement
- Test pinning and risk assessment to keep changes narrow and avoid breaking existing behavior