Analyzes C/C++ codebases by building Code Property Graphs, supporting CPGQL queries, call graph and data-flow analysis, program slicing, and vulnerability detection.
Builds Code Property Graphs from Git repositories, enabling CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting across the repository's code.
Analyzes JavaScript codebases by building Code Property Graphs, supporting CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting.
Analyzes Kotlin codebases by building Code Property Graphs, supporting CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting.
Analyzes PHP codebases by building Code Property Graphs, supporting CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting.
Analyzes Python codebases by building Code Property Graphs, supporting CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting.
Analyzes Ruby codebases by building Code Property Graphs, supporting CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting.
Analyzes Swift codebases by building Code Property Graphs, supporting CPGQL queries, data-flow and taint tracing, program slicing, and vulnerability hunting.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@codebadger build a CPG for this repo and trace taint from HTTP input to SQL sinks"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
codebadger is a containerized Model Context Protocol (MCP) server that gives AI agents and LLMs deep, queryable access to a codebase's structure and data flow through Joern Code Property Graphs (CPGs).
Point it at a Git repository, a local path, or even a pasted code snippet, and codebadger builds a CPG and exposes it over MCP — so an assistant can run CPGQL queries, trace data flow and taint, slice programs, and hunt for vulnerabilities across Java, C/C++, JavaScript, Python, Go, Kotlin, C#, Ghidra, Jimple, PHP, Ruby, and Swift.
It's a general-purpose foundation for both program analysis (understanding code structure, call graphs, and data flow) and vulnerability analysis (taint tracking, bug hunting, and PoC development) — useful for academic research as well as industry security and engineering work. It's built to scale to large analysis batches with per-CPG worker pools, memory-aware scheduling, and a Postgres/Redis backend.
codebadger and its paper - Bridging Code Property Graphs and Language Models for Program Analysis - were accepted at the Software Vulnerability Management Workshop @ ICSE 2026. 🎉
Related MCP server: OpenCodeHub MCP Server
Everything a developer or security researcher needs lives in docs/:
Doc | What's in it |
Prerequisites and a 5-minute local setup. | |
Connecting MCP clients, the tool catalog, and a researcher workflow. | |
Recommended bounded tool sequence for agents. | |
Every MCP tool by category, with a description of what each does. | |
| |
Postgres/Redis, memory sizing, | |
System design and diagrams. | |
Threat model, trust boundaries, and production hardening. | |
Add your own detectors. | |
Dev setup, tests, and guidelines. | |
What's shipped and what's next. |
We'd love to hear about it - open a PR adding it to TROPHIES.md (CVE ID, project, one-line description, date).
@inproceedings{lekssays2026bridging,
title={Bridging Code Property Graphs and Language Models for Program Analysis},
author={Lekssays, Ahmed},
booktitle={Proceedings of the 2026 IEEE/ACM 4th International Workshop on Software Vulnerability Management},
pages={33--40},
year={2026}
}This server cannot be deployed
Hosted code graph over MCP: exact callers, dependencies, and cross-repo blast radius for AI agents.
Code intelligence platform for AI agents. 20 tools for architecture, security & impact analysis.
Code intelligence for coding agents: semantic, AST, graph, and full-text search. 279+ languages.
AI-native git hosting — repos, PRs, issues, CI gates, and AI code review over MCP (60 tools).
