GitOS: Graph-Powered Ecosystem Defense & Intelligence Layer for GitHub

Naimish Singh and Team BitBuddies built GitOS, a graph-powered review layer for GitHub that uses FalkorDB and a universal AST parser to deterministically flag problematic AI-generated pull requests. Instead of prompting an LLM, GitOS runs Cypher queries over code graphs to detect untested call-graph impact, hallucinated dead code (in-degree zero), cosmetic churn, and violations of maintainer architectural boundaries, returning results in roughly 3 to 7 milliseconds. A five-agent swarm then runs only after these deterministic metrics are computed.

By Naimish Singh & Team BitBuddies Graph Hacks: Context for AI Agents 2026 If you maintain an open-source library with more than a few hundred stars, you already know what happened over the last twelve months: Your notifications exploded. But they didn’t explode with deep bug reports or thoughtful refactors. They exploded with AI-generated pull requests . Someone pastes an issue into a frontier LLM, prompts it to "fix this," and hits Submit PR without reading a single line of the diff. On the surface, the PR looks articulate. The markdown description is immaculate, formatted with bullet points and emojis. But when you inspect the code: routing.py broke 14 callers across unrelated modules because the author never ran the test suite. in degree == 0 . We watched maintainers of projects like FastAPI, Flask, and React spend their weekends acting as human spam filters. We asked ourselves a simple engineering question: Why are we using stochastic, token-hungry LLMs to guess at structural code relationships when a graph database can determine them with 100% mathematical certainty in under 10 milliseconds? That question gave birth to GitOS . Before building GitOS, we laid down three non-negotiable architectural axioms: add api route ?" To make this possible, we needed a graph engine with sub-millisecond traversal latencies on in-memory topologies. That engine was FalkorDB . When a maintainer or contributor pastes a GitHub PR URL into GitOS, the system doesn’t prompt an LLM. Instead, it triggers a 4-layer deterministic pipeline: GitHub PR URL │ ▼ In-Memory Tree Fetch - 0 Disk Clones Universal AST Parser Python & Tree-Sitter │ ▼ Subgraphs Persisted by commit sha FalkorDB Graph Engine │ ├── Filter 1: Untested Call-Graph Impact :TESTED BY Traversal ├── Filter 2: AST Delta vs. Raw Text Diff Ratio Cosmetic Churn ├── Filter 3: Dead Code Injection In-Degree == 0 └── Filter 4: Maintainer Architectural Boundaries Forbidden Edges │ ▼ Sub-10ms Subgraph Results 3D Interactive Force Graph & Multi-Agent Swarm We extract classes, functions, calls, and imports into formal graph primitives: :Function , :Class , :Module , :Test :CALLS , :IMPORTS , :TESTED BY , :DEFINES Instead of asking an AI to "spot bugs", GitOS executes deterministic Cypher queries directly against FalkorDB. A. Multi-Hop Blast Radius: When a PR alters a signature, how far does the blast wave travel? MATCH target:Function WHERE target.id IN $modified targets MATCH path = caller:Function - :CALLS 1..$hops - target RETURN caller.id, target.id, length path AS hop distance ORDER BY hop distance ASC LIMIT 100; In FalkorDB, this recursive traversal returns in 3 to 7 milliseconds . It instantly reveals that changing APIRouter.add api route in Python cascades into an unverified TypeScript gateway controller two hops away. B. Catching Hallucinated Dead Code: LLMs frequently hallucinate dead helper functions. We query incoming call in-degrees: MATCH fn:Function {commit sha: $commit sha} WHERE NOT fn.name STARTS WITH 'test ' AND NOT fn.name STARTS WITH ' ' OPTIONAL MATCH caller:Function - :CALLS - fn WITH fn, count caller AS in degree WHERE in degree = 0 RETURN fn.id, fn.file path, fn.line start; If in degree == 0 , GitOS immediately flags the injected symbol as potential AI hallucination. Zero tokens spent. C. Cosmetic Churn Ratio: We compare AST node mutations against raw line diffs. If a PR touches 1,480 lines of text across 18 files but only mutates 3 AST nodes a ratio of 0.002 , GitOS flags it as cosmetic AI slop before maintainers waste cognitive energy reviewing it. Only after FalkorDB computes the deterministic metrics does our 5-agent swarm take the stage: gitos {owner} {repo} to identify cross-module dependency regressions. eval , command injection and package slopsquatting. PATCH , MINOR , or MAJOR and draft structured release notes. Because FalkorDB compresses the entire problem into a tiny, high-density subgraph, when we do call an LLM Groq Llama 3.3 70B , the prompt is under 800 tokens . No prompt bloat, no token bankruptcy, and no hallucinations. When we started the hackathon, we experimented with relational joins and document stores. They fell apart the moment we hit multi-hop traversals across enterprise codebases like Flask and FastAPI. With FalkorDB: gitos fastapi fastapi , gitos pallets flask on the fly inside a single instance without deploying separate database clusters. This made multi-tenant per-repo memory effortless. A - :CALLS - B - :CALLS - C is deterministic proof you can show to any senior engineer. We made sure anyone—especially hackathon judges—can run GitOS locally with a single command: git clone https://github.com/ace-ify/GitOS.git cd GitOS cp .env.example .env Add your GitHub token in .env docker-compose up --build http://localhost:3000 to interact with the 3D topology graph. http://localhost:8000/docs . AI shouldn’t make open source harder to maintain. It should make ecosystems cleaner, safer, and more accessible. By pairing modern AI agents with the structural rigor of FalkorDB graph databases, we don't just guess what code does—we trace it, defend it, and understand it. Check out the open-source code on GitHub: https://github.com/ace-ify/GitOS https://github.com/ace-ify/GitOS