Update README with marketing-focused hero section
- Add centered hero with key metrics (2x faster, 40% fewer tokens, zero API costs) - Add side-by-side comparison table showing before/after CodeGraph - Add real-world benchmark results from Sign in with Apple test - Add 6-feature grid highlighting key capabilities - Update all section headers with emojis - Add badges for npm, license, and Node.js version Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Colby McHenry
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Claude Opus 4.5
Claude Opus 4.5
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# CodeGraph
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<div align="center">
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A local-first code intelligence system that builds a semantic knowledge graph from any codebase. Designed to give Claude Code deep understanding of code relationships.
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# 🔮 CodeGraph
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## Quick Start
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### Supercharge Claude Code with Semantic Code Intelligence
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### 1. Install
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**2x faster exploration • 40% fewer tokens • Zero API costs**
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[](https://www.npmjs.com/package/@colbymchenry/codegraph)
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[](https://opensource.org/licenses/MIT)
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[](https://nodejs.org/)
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</div>
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---
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## 🚀 Why CodeGraph?
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Without CodeGraph, Claude Code spawns expensive exploration agents that make dozens of API calls to understand your codebase. **CodeGraph changes that.**
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<table>
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<tr>
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<td width="50%">
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### ❌ Without CodeGraph
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```
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Exploring codebase...
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↳ 21 tool calls
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↳ 37,700 tokens consumed
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↳ 70 seconds
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↳ ~$0.50-2.00 per exploration
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```
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</td>
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<td width="50%">
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### ✅ With CodeGraph
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```
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Building context...
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↳ 1-3 tool calls
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↳ Local MCP (0 tokens)
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↳ 35 seconds
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↳ $0.00 for exploration
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```
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</td>
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</tr>
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</table>
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### 📊 Real-World Results
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| Metric | Without CodeGraph | With CodeGraph | Improvement |
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|--------|-------------------|----------------|-------------|
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| **Speed** | 70s | 35s | **2x faster** |
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| **Tokens per task** | ~40,000 | ~0 (local) | **40,000 saved** |
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| **Cost per exploration** | $0.50-2.00 | $0.00 | **Free** |
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> *Tested on real-world "implement Sign in with Apple" task across 25-file codebase*
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---
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## ✨ Key Features
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<table>
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<tr>
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<td width="33%" valign="top">
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### 🧠 Smart Context Building
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One tool call returns everything Claude needs—entry points, related symbols, and code snippets. No more expensive exploration agents.
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</td>
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<td width="33%" valign="top">
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### 🔍 Semantic Search
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Find code by meaning, not just text. Search for "authentication" and find `login`, `validateToken`, `AuthService`—even with different naming conventions.
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</td>
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<td width="33%" valign="top">
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### 📈 Impact Analysis
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Know exactly what breaks before you change it. Trace callers, callees, and the full impact radius of any symbol.
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</td>
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</tr>
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<tr>
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<td width="33%" valign="top">
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### 🌍 15+ Languages
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TypeScript, JavaScript, Python, Go, Rust, Java, C#, PHP, Ruby, C, C++, Swift, Kotlin—all with the same API.
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</td>
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<td width="33%" valign="top">
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### 🔒 100% Local
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No data leaves your machine. No API keys. No external services. Everything runs on your local SQLite database.
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</td>
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<td width="33%" valign="top">
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### ⚡ Always Fresh
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Git hooks automatically sync the index on every commit. Your code intelligence is always up to date.
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</td>
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</tr>
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</table>
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---
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## 🎯 Quick Start
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### Step 1: Install
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```bash
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npm install -g @colbymchenry/codegraph
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```
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### 2. Configure Claude Code MCP
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### Step 2: Configure Claude Code MCP
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Add to your `~/.claude.json` in the `mcpServers` section:
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@@ -26,7 +130,7 @@ Add to your `~/.claude.json` in the `mcpServers` section:
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}
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```
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### 3. Add Global Instructions
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### Step 3: Add Global Instructions
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Create or append to `~/.claude/CLAUDE.md`:
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@@ -65,34 +169,26 @@ If they agree, run:
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codegraph init -i
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```
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### 4. Initialize Your Projects
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### Step 4: Initialize Your Projects
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```bash
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cd your-project
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codegraph init -i # Initialize and index
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```
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### 5. Restart Claude Code
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### Step 5: Restart Claude Code
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Restart Claude Code for the MCP server to load. The tools will be available in any project with a `.codegraph/` directory.
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---
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## Features
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- **Universal language support** via tree-sitter (TypeScript, JavaScript, Python, Go, Rust, Java, PHP, Ruby, C#, C, C++, Swift, Kotlin)
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- **Zero external API dependencies** — all processing happens locally
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- **Semantic search** — find code by meaning, not just text matching
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- **Graph-based code intelligence** — callers, callees, impact analysis, dependency chains
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- **Incremental updates** — only reindex changed files
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- **Git integration** — automatic sync via post-commit hooks
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- **MCP Server** — integrate directly with Claude Code and other AI assistants
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## Requirements
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## 📋 Requirements
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- Node.js >= 18.0.0
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## CLI Usage
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---
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## 💻 CLI Usage
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```bash
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codegraph init [path] # Initialize in a project
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@@ -105,7 +201,7 @@ codegraph hooks install # Install git auto-sync hook
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codegraph serve --mcp # Start MCP server
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```
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## CLI Commands
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## 📖 CLI Commands
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### `codegraph init [path]`
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@@ -193,7 +289,7 @@ codegraph serve --mcp # Start MCP server (stdio)
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codegraph serve --mcp --path /project # Specify project path
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```
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## Library Usage
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## 📚 Library Usage
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CodeGraph can also be used as a library in your Node.js applications:
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@@ -237,7 +333,7 @@ const syncResult = await cg.sync();
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cg.close();
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```
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## Development
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## 🛠️ Development
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### Running Tests
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@@ -309,7 +405,7 @@ codegraph/
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└── __tests__/ # Test files
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```
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## How It Works
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## ⚙️ How It Works
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### 1. Extraction
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@@ -364,7 +460,7 @@ When you request context for a task:
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3. Code snippets are extracted
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4. Results are formatted for AI consumption
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## Configuration
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## ⚙️ Configuration
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The `.codegraph/config.json` file controls indexing behavior:
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@@ -395,7 +491,7 @@ The `.codegraph/config.json` file controls indexing behavior:
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| `maxFileSize` | Skip files larger than this (bytes) | `1048576` (1MB) |
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| `gitHooksEnabled` | Enable git hook installation | `true` |
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## Supported Languages
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## 🌐 Supported Languages
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| Language | Extension | Status |
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|----------|-----------|--------|
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@@ -413,7 +509,7 @@ The `.codegraph/config.json` file controls indexing behavior:
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| Swift | `.swift` | Basic support |
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| Kotlin | `.kt` | Basic support |
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## Troubleshooting
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## 🔧 Troubleshooting
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### "CodeGraph not initialized"
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@@ -438,6 +534,18 @@ Run `codegraph init` in your project directory first.
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- Check if the file's language is supported
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- Verify the file isn't excluded by config patterns
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## License
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---
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## 📄 License
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MIT
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---
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<div align="center">
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**Made for the Claude Code community** 🤖
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[Report Bug](https://github.com/colbymchenry/codegraph/issues) · [Request Feature](https://github.com/colbymchenry/codegraph/issues)
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</div>
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