Gtools
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

GitFill — Understand Any Codebase with Evidence, Not Guesses. GitFill turns any codebase into something developers can understand, explain, reuse, and evolve. Developers spend significant time understanding unfamiliar repositories, tracing application workflows, documenting architecture, and communicating technical decisions. AI coding assistants can help, but their explanations often contain hallucinated functions, incorrect file references, or architectural assumptions that cannot be verified. GitFill addresses this problem through evidence-backed repository intelligence. Developers can connect a GitHub repository and ask questions in natural language, receiving explanations grounded in actual source code, with file paths, exact line references, and verifiable citations. What GitFill offers: Codebase Intelligence: Understand application architecture, execution flows, APIs, dependencies, and relationships between components. Automated Documentation: Generate technical handbooks, onboarding guides, architecture diagrams, and feature documentation. Commit Intelligence: Compare commits, branches, and releases to identify structural changes and their impact. Architecture Reuse: Extract implementation patterns from existing repositories and turn them into actionable instructions for AI coding agents. Developer Workspace: Generate READMEs, technical presentations, and reusable repository knowledge. What makes GitFill different: It combines code-derived repository graphs, real tool-based exploration, and deterministic claim verification. Every explanation is evaluated against the actual source code rather than trusting the language model to verify its own answers. Built with Meta's Muse Spark for agentic code exploration, Muse Wonder for structured composition, Muse Voice Transcribe for voice interaction, and Muse Image for visual generation, GitFill makes complex software systems easier to understand and work with. GitFill's vision is to make every codebase understandable, verifiable, and reusable. checkout : https://gitfill.gtools.in