by qcri
🦡 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).
# Add to your Claude Code skills
git clone https://github.com/qcri/codebadgerLast scanned: 8/24/2026
{
"issues": [],
"status": "PASSED",
"scannedAt": "2026-08-24T04:42:48.702Z",
"npmAuditRan": true,
"pipAuditRan": false,
"promptInjectionRan": true
}codebadger is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by qcri. 🦡 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). It has 159 GitHub stars.
Yes. codebadger passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.
Clone the repository with "git clone https://github.com/qcri/codebadger" and add it to your Claude Code skills directory (see the Installation section above).
codebadger is primarily written in Python. It is open-source under qcri on GitHub, so you can review or fork the full source.
Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh codebadger against similar tools.
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⚠️ Third-Party Software Notice
This skill is third-party open-source software developed and hosted independently on GitHub. SkillsLLM is an informational directory and does not control or maintain the underlying repository.
Any security checks, ratings, or warnings displayed by SkillsLLM are automated and limited in scope. They do not constitute a security certification or guarantee that the software is safe, error-free, or free from malicious code, vulnerabilities, compromised dependencies, or prompt-injection risks.
Review the source code, permissions, dependencies, and configuration before installing or running any third-party skill. Use is at your own risk. To the maximum extent permitted by applicable law, SkillsLLM is not liable for losses arising from third-party software.
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. 🎉
Everything a developer or security researcher needs lives in docs/:
| Doc | What's in it |
|---|---|
| Installation | Prerequisites and a 5-minute local setup. |
| Usage | Connecting MCP clients, the tool catalog, and a researcher workflow. |
| LLM workflow guide | Recommended bounded tool sequence for agents. |
| Available Tools | Every MCP tool by category, with a description of what each does. |
| Configuration | config.yaml / env reference, telemetry. |
| Deployment | Postgres/Redis, memory sizing, shared vs pool, large batches. |
| Architecture | System design and diagrams. |
| Security | Threat model, trust boundaries, and production hardening. |
| Custom Tools | Add your own detectors. |
| Contributing | Dev setup, tests, and guidelines. |
| Roadmap | 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}
}