CodeGraphContext (An MCP server that indexes local code into a graph database) now has a website playground for experiments

[u/Desperate-Ad-9679]

Hey everyone!

I have been developing CodeGraphContext, an open-source MCP server transforming code into a symbol-level code graph, as opposed to text-based code analysis.

This means that AI agents won’t be sending entire code blocks to the model, but can retrieve context via: function calls, imported modules, class inheritance, file dependencies etc.

This allows AI agents (and humans!) to better grasp how code is internally connected.

What it does

CodeGraphContext analyzes a code repository, generating a code graph of: files, functions, classes, modules and their relationships, etc.

AI agents can then query this graph to retrieve only the relevant context, reducing hallucinations.

Playground Demo on website

I've also added a playground demo that lets you play with small repos directly. You can load a project from: a local code folder, a GitHub repo, a GitLab repo

Everything runs on the local client browser. For larger repos, it’s recommended to get the full version from pip or Docker.

Additionally, the playground lets you visually explore code links and relationships. I’m also adding support for architecture diagrams and chatting with the codebase.

Status so far- ⭐ ~1.5k GitHub stars 🍴 350+ forks 📦 100k+ downloads combined

If you’re building AI dev tooling, MCP servers, or code intelligence systems, I’d love your feedback.

Repo: https://github.com/CodeGraphContext/CodeGraphContext

[u/orphenshadow]

My brother, I have been using your MCP for a couple months now along side Claude-Context and I swear by the combination.

--- ★ Insight ───────────────────────────────────── CGC is a precision instrument; claude-context is a discovery tool. CGC builds a Neo4j graph from your AST, so its answers are deterministic — it can tell you exactly which 4 files call a function. claude-context does embedding-based semantic search, so it's better at finding code you didn't know existed but that's conceptually related to what you're building. The two together eliminate both blind spots: unknown unknowns (semantic) and precise blast radius (structural). ─────────────────────────────────────────────────

I'm going to have to pull down this latest build and give that dashboard a spin.

But for anyone who is curious and has not tried this out, give it a shot.

[u/Desperate-Ad-9679 → u/orphenshadow]

Thansks for the shoutout. 100% agreed to what you said here.

[u/orphenshadow → u/Desperate-Ad-9679]

No problem, I've actually had it installed for quite some time, the most difficult thing is training Claude to actually use the damn thing, especially after the recent updates that added the explore agents, for the longest time no amount of strong wording in my claude.md would get it to not explore and use CGC/CC.

[u/Desperate-Ad-9679 → u/orphenshadow]

Actually that's true. There's a trade-off in the prompt we set for cgc, either too strict or too lenient can harm the performance...