How do I use Context Bunker MCP?

1. Click on "Deploy Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Context Bunker MCP Find unused exports in the current project." 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.

Context Bunker MCP

by tonghaoch

Overview Schema Source Related Servers Discussions Admin

TypeScript

Local

Context Bunker MCP 🏗️

Build & Test

Stop wasting tokens on orientation. Pre-computed codebase intelligence for AI coding tools. One command. Code never leaves your machine.

What is this?

AI coding agents spend ~80% of tokens just figuring out where things are — re-reading files, tracing imports, grepping for symbols. Every. Single. Session.

Context Bunker fixes this. It's an MCP server that indexes your codebase using tree-sitter AST parsing and gives your AI tools instant access to structural intelligence — dependency graphs, call trees, dead code, cross-session diffs — all from a local SQLite database.

One call replaces 8-16 grep/read calls. ~90% token savings. Zero cloud. Zero API keys.

Works with Claude Code, Cursor, Windsurf, Copilot, and any MCP-compatible client.

Why not just grep? Grep finds text. Context Bunker understands structure — dependency graphs, cross-session memory, dead code detection, and token-efficient summaries. Things grep structurally can't do. Full comparison.

Related MCP server: reposynapse

Setup

Install

# Run directly — no install needed
bunx context-bunker-mcp /your/project

# Or install globally
bun install -g context-bunker-mcp

# No Bun? npx / npm work too

Add to your AI tool

Claude Code:

# With a project (auto-indexes on startup)
claude mcp add context-bunker -- bunx context-bunker-mcp /your/project

# Without a project (AI calls set_project dynamically)
claude mcp add context-bunker -- bunx context-bunker-mcp

# No Bun? npx work too

Cursor / Windsurf / VS Code — add to settings.json:

{
  "mcpServers": {
    "context-bunker": {
      "command": "bunx",
      "args": ["context-bunker-mcp", "/your/project"]
    }
  }
}

Tools (16)

Tool	What it does
🔥 `get_changes_since_last_session`	What changed since the AI last looked. No more re-orientation.
🔥 `find_unused_exports`	Dead code detection — exported but never imported anywhere.
🔥 `find_unused_code`	Find dead internal code — functions, classes, variables, types never referenced.
🔥 `get_file_summary`	File overview in ~50 tokens. Scan 10 files for the cost of 1.
🔥 `search_by_pattern`	Find structural patterns: HTTP calls, env access, error handlers, async, TODOs.
🧠 `get_smart_context`	Full file context in 1 call — imports, exports, dependents, types, tests.
🧠 `get_dependency_graph`	"If I change this, what breaks?" — transitive import graph with depth control.
🧠 `find_symbol`	AST-aware symbol search by name, kind, and scope. Not text matching.
🧠 `find_references`	Where a symbol is used, classified by kind (import, call, type annotation).
🧠 `get_call_graph`	What a function calls, recursively, as a tree.
🧠 `get_symbol_source`	Extract one definition — not the whole file. 80% token savings.
🧠 `get_project_map`	Architecture overview: modules, public APIs, relationships.
🔧 `set_project`	Point the index at any project directory on the fly.
🔧 `search_code`	Semantic search via local TF-IDF. No API keys needed.
🔧 `reindex`	Force re-index of the codebase or a single file.
🔧 `get_status`	Index health, file counts, token savings estimate.

🔥 Unique   🧠 Core Intelligence   🔧 Housekeeping

Language Support

TypeScript, JavaScript (TSX/JSX/MTS/CTS), Python, Go, Rust, Java, C#

Tech Stack


Runtime	Bun (Node.js fallback) — `bun:sqlite` = zero native deps, 4-10x faster startup
MCP	`@modelcontextprotocol/sdk`
AST	`web-tree-sitter` (WASM) — no native bindings, works everywhere
Storage	SQLite (WAL mode) — single file, survives restarts
Search	TF-IDF (local) — zero API keys, no cloud
Watch	`chokidar` — incremental re-index on file changes

Storage

The index lives in your OS cache directory — not inside the project. No .gitignore needed.

Platform	Location
macOS	`~/Library/Caches/context-bunker/<project>/index.db`
Linux	`~/.cache/context-bunker/<project>/index.db`
Windows	`%LOCALAPPDATA%\context-bunker\<project>\index.db`

Want it inside the project instead? Use --local or set { "storage": "local" } in .context-bunker.json.

License

MIT

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityInactive

ResponsivenessNo issues

Resources

GitHub Repository

Need Help?

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