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Code Graph RAG

Code Graph RAG

AI

Multi-language monorepo RAG: Tree-sitter parses your codebase into a Memgraph knowledge graph so you can query, edit, and refactor in plain English.

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Premium plans available

About Code Graph RAG

Code Graph RAG (published on PyPI as `cgr`) parses a mixed-language codebase with Tree-sitter, ingests functions, classes, methods, modules, and their relationships into a Memgraph knowledge graph under a single language-agnostic schema, and exposes an interactive CLI that turns natural-language questions into Cypher queries. Once the graph exists, you can ask questions grounded in the real structure, retrieve source by intent, edit code through the agent with AST-based surgical patching and a diff preview, optimize code against language best practices, and find dead code by walking call and reference edges from entry points. A new pluggable ast-grep tier adds languages from a single YAML pattern file (Ruby just joined this way), and FLOWS_TO taint edges follow values through assignments, function calls, and I/O sinks in C, Java, C, and Go for data-flow tracing. Structural search-and-replace via ast-grep is exposed as agent tools so you can match and transform structure across the whole codebase instead of relying on text or regex.

Key Features

Multi-Language Graph Ingest: Tree-sitter parses Python, TypeScript, TSX, JavaScript, Rust, Go, Java, C, C++, C#, PHP, Lua, and Dart into a single language-agnostic Memgraph schema.
Natural-Language Cypher: The interactive CLI turns plain-English questions into Cypher queries and answers grounded in the real code structure, not vector-only guesses.
AST-Based Surgical Editing: The agent edits code through structural patches with a diff preview before any change is applied.
Structural Search & Replace: ast-grep is exposed as an agent tool, so you match and rewrite by AST pattern across the whole codebase instead of regex.
Pluggable ast-grep Tier: Add a new language from a single YAML pattern file — Ruby was added this way with Module/Function/Class nodes plus import edges.
Data-Flow Tracing: FLOWS_TO taint edges follow values through assignments, function calls, and I/O sinks across C, Java, C#, and Go.
Dead-Code Detection: Walk call and reference edges from entry points to find functions and modules nothing reaches.
Shared Graph Across Projects: Index many repos into one shared graph and query across them; a `clean` subcommand resets from scratch with confirmation.

Use Cases

Monorepo Q&A: Ask 'where is refund logic in this monorepo?' and get grounded answers from a graph of the real code, not stale docs.
AI-Assisted Refactoring: Rename or restructure APIs across languages with AST patches and a diff preview before commit.
Cross-Language Data-Flow Audits: Trace a value through assignments and function calls to see where sensitive data ends up.
Dead-Code Cleanup: Find unreachable functions and modules by walking call edges from entry points.
Codebase Onboarding: Give a new engineer or agent a queryable graph they can explore in natural language.
Structural Migrations: Use ast-grep to rewrite deprecated patterns (imports, error handling, config lookups) across a polyglot codebase.

Frequently asked questions about Code Graph RAG

What is Code Graph RAG?

Code Graph RAG (Retrieval-Augmented Generation) utilizes Tree-sitter to parse multi-language monorepos into a Memgraph knowledge graph. This allows developers to query, edit, and refactor their codebases using plain English, significantly enhancing code comprehension and collaboration across teams.

Key Points

  • Multi-language Support: Code Graph RAG works with various programming languages.
  • Knowledge Graph Integration: It uses Memgraph to create a structured representation of code.
  • Natural Language Queries: Users can interact with their codebase in plain English.

Detailed Explanation

Code Graph RAG is an innovative tool designed for software developers working with large codebases. By leveraging Tree-sitter, a powerful parser generator, it effectively breaks down code into a structured format. This structured data is then represented as a knowledge graph in Memgraph, a graph database that excels in handling complex relationships and queries.

How It Works

  1. Parsing the Codebase: When developers integrate Code Graph RAG, Tree-sitter scans the entire codebase, regardless of programming language, and builds a knowledge graph that highlights the relationships between various code components.
  2. Querying the Code: Users can pose questions about their code using natural language. For instance, a developer might ask, "What functions call this method?" The system interprets this query and returns relevant results from the knowledge graph.
  3. Refactoring and Editing: Beyond just querying, Code Graph RAG aids in code refactoring. Developers can easily make changes to their code by specifying what they want to edit in plain English, streamlining the coding process.

Use Cases

  • Collaborative Development: Teams can work together more effectively, as all members, regardless of programming language expertise, can understand and manipulate the code.
  • Onboarding New Developers: New team members can get up to speed faster by querying the knowledge graph for insights about the codebase.
  • Code Maintenance: Keeping a codebase updated and efficient becomes simpler, as natural language queries help identify outdated or unused code.

Best Practices / Tips

  • Regular Updates: Ensure that your codebase is frequently parsed to keep the knowledge graph current.
  • Comprehensive Documentation: Complement Code Graph RAG with thorough documentation to enhance understanding and usability.
  • Engage the Team: Encourage all developers to use natural language queries to foster an inclusive coding environment.

Additional Resources

How does Code Graph RAG work?

Code Graph RAG integrates multiple programming languages into a cohesive system, enabling natural language queries, structural code edits, and comprehensive codebase management. It leverages advanced technologies like AST parsing and AI-assisted features to improve code comprehension, refactoring, and onboarding.

Key Points

  • Multi-Language Integration: Supports various programming languages through a unified schema.
  • Natural Language Processing: Converts plain-English questions into actionable code queries.
  • AST-Based Editing: Allows precise modifications with structural previews.

Detailed Explanation

Code Graph RAG stands out by combining several innovative features to streamline code management.

  1. Multi-Language Graph Ingest: Utilizing Tree-sitter, Code Graph RAG parses numerous languages, including Python, JavaScript, Java, and more, into a language-agnostic Memgraph schema. This allows developers to work with a unified data model, enhancing collaboration across diverse codebases.

  2. Natural-Language Cypher: The interactive command-line interface (CLI) enables users to pose questions in plain English, which are then translated into Cypher queries. For example, when asking, "Where is the refund logic in this monorepo?" users receive precise answers based on the actual code structure, eliminating the need to sift through outdated documentation.

  3. AST-Based Surgical Editing: Code modifications are performed through Abstract Syntax Tree (AST) patches. With a diff preview available before applying changes, developers can visualize the impact of their edits, ensuring accuracy and reducing errors.

  4. Structural Search & Replace: By exposing ast-grep as an agent tool, users can perform complex search and replace operations based on AST patterns instead of relying on traditional regex, which is often less reliable in structured code.

  5. Pluggable ast-grep Tier: Adding support for new languages is straightforward; for instance, Ruby can be introduced using a single YAML pattern file, which defines Module, Function, and Class nodes along with their import edges.

  6. AI-Assisted Refactoring: The system supports renaming or restructuring APIs across different languages, applying necessary AST patches while providing a preview of changes before they are committed.

  7. Cross-Language Data-Flow Audits: Developers can trace data through assignments and function calls to monitor where sensitive information is used, enhancing security and compliance.

  8. Dead-Code Cleanup: By analyzing call edges from entry points, Code Graph RAG can identify and eliminate unreachable functions and modules, optimizing the codebase.

  9. Codebase Onboarding: New engineers or AI agents can explore a queryable graph of the code, facilitating an efficient onboarding process that promotes better understanding and faster integration into projects.

Best Practices / Tips

  • Utilize Natural Language Queries: Leverage the natural language processing capabilities to simplify complex code searches and enhance productivity.
  • Preview Changes with AST: Always review the diff preview before applying code changes to avoid unintended consequences.
  • Regularly Update Language Support: Make use of the pluggable features to keep your codebase versatile and adaptable to new programming languages.

Additional Resources

What are the main features of Code Graph RAG?

Code Graph RAG features a Multi-Language Graph Ingest, Natural-Language Cypher for intuitive queries, AST-Based Surgical Editing for precise code modifications, Structural Search & Replace for effective code pattern matching, and a Pluggable ast-grep Tier for easy language additions, enhancing versatility and user experience.

Key Points

  • Multi-Language Graph Ingest: Supports multiple programming languages.
  • Natural-Language Cypher: Translates English queries into actionable code queries.
  • AST-Based Surgical Editing: Allows for precise and reversible code changes.

Detailed Explanation

Multi-Language Graph Ingest

Code Graph RAG utilizes the Tree-sitter parser to convert code from various programming languages—including Python, TypeScript, JavaScript, Rust, Go, Java, C, C++, C#, PHP, Lua, and Dart—into a unified, language-agnostic Memgraph schema. This feature enables developers to manage and analyze codebases written in different languages seamlessly.

Natural-Language Cypher

The Natural-Language Cypher allows users to interact with the codebase by asking questions in plain English. This interactive Command-Line Interface (CLI) translates these queries into Cypher queries, providing answers based on the actual code structure rather than relying solely on vector representations. This significantly enhances the user experience, making complex code queries accessible to developers of all skill levels.

AST-Based Surgical Editing

With AST-Based Surgical Editing, developers can make structural changes to their code with precision. The system offers a diff preview, allowing users to visualize changes before they are applied. This feature is crucial for maintaining code integrity, as it prevents unwanted modifications and encourages thoughtful edits.

Structural Search & Replace

The structural search and replace functionality leverages the ast-grep tool, enabling users to search for specific Abstract Syntax Tree (AST) patterns across an entire codebase. Unlike traditional regex, this method ensures accuracy and context, allowing developers to rewrite code more effectively.

Pluggable ast-grep Tier

Adding new languages is straightforward with the pluggable ast-grep tier. Developers can introduce new language support using a simple YAML pattern file. For example, Ruby was integrated by specifying node types such as Module, Function, and Class, along with their import edges, demonstrating the flexibility of the system.

Best Practices / Tips

  • Utilize Natural Language: Take advantage of the Natural-Language Cypher to quickly query your codebase without needing in-depth knowledge of Cypher syntax.
  • Preview Changes: Always review the diff preview in AST-Based Surgical Editing before applying changes to avoid introducing bugs.
  • Explore Language Additions: Regularly check for updates or community-contributed YAML files to expand language support, enhancing your tool’s versatility.

Additional Resources

Who is Code Graph RAG for?

Code Graph RAG is designed for software developers, engineers, and teams working with monorepos. It enhances code understanding and management by providing features like AI-assisted refactoring, cross-language data flow audits, dead-code cleanup, and onboarding tools for new engineers, ensuring efficient navigation and collaboration within complex codebases.

Key Points

  • Monorepo Q&A: Directly queries code to find specific logic.
  • AI-Assisted Refactoring: Facilitates renaming and restructuring APIs.
  • Cross-Language Audits: Traces data flow to identify sensitive information.

Detailed Explanation

Code Graph RAG is particularly beneficial for teams that manage large monorepos, which are repositories that house multiple projects or packages. Its primary functionalities include:

  1. Monorepo Q&A: Users can ask questions like "Where is the refund logic in this monorepo?" and receive precise answers grounded in the actual code structure rather than outdated documentation. This capability drastically reduces the time spent searching for specific logic.

  2. AI-Assisted Refactoring: Developers can rename or restructure APIs across different programming languages using Abstract Syntax Tree (AST) patches. This feature includes a diff preview, allowing teams to visualize changes before committing them, minimizing errors and ensuring consistency.

  3. Cross-Language Data-Flow Audits: Code Graph RAG enables users to trace data through assignments and function calls, providing visibility into how sensitive data is handled. This feature is essential for compliance with data protection regulations and for identifying potential security vulnerabilities.

  4. Dead-Code Cleanup: By analyzing call edges from entry points, Code Graph RAG identifies unreachable functions and modules, helping teams to streamline their codebase and improve maintainability.

  5. Codebase Onboarding: For new engineers or agents, it offers a queryable graph that can be explored in natural language. This interactive approach accelerates onboarding and enhances understanding of complex code structures.

Best Practices / Tips

  • Utilize Monorepo Q&A: Regularly leverage the Q&A feature to familiarize yourself with the codebase, especially for new features or changes.
  • Review Refactoring Changes: Always use the diff preview when making significant refactoring changes to catch potential issues early in the development process.
  • Conduct Regular Audits: Schedule routine cross-language data-flow audits to maintain data integrity and security compliance.

Additional Resources

How much does Code Graph RAG cost?

Code Graph RAG provides a free tier that allows users to explore basic functionalities. For enhanced capabilities, it offers several paid plans that vary in pricing, starting at competitive rates, tailored to meet different user needs and usage levels.

Key Points

  • Code Graph RAG has a free tier for basic access.
  • Paid plans are available for advanced features.
  • Pricing varies based on usage requirements.

Detailed Explanation

Code Graph RAG is designed to cater to both casual users and professional developers. The free tier allows users to explore essential functionalities without any financial commitment. This is perfect for individuals or small teams who want to experiment with the tool's capabilities.

For users needing more advanced features, Code Graph RAG offers several paid plans. These plans typically include additional functionalities such as increased API limits, advanced analytics, and priority support. For example, the basic paid plan may start at around $15 per month, offering richer features compared to the free version. Higher tiers can cost up to $100 per month or more, depending on the scale of usage and required features.

Businesses and developers can select a plan that aligns with their specific needs, whether they require enhanced data processing, collaboration tools, or integrations with other software solutions.

Best Practices / Tips

  • Evaluate your needs: Before committing to a paid plan, assess what features you actually need. The free tier may suffice for initial testing.
  • Check for discounts: Code Graph RAG might offer promotional rates or discounts for annual subscriptions, which can save you money.
  • Utilize community support: Engage with online forums or user groups for tips on maximizing the free tier and understanding when to upgrade.

Additional Resources

How do I get started with Code Graph RAG?

To get started with Code Graph RAG, visit the official GitHub repository to sign up and explore its features. You can find comprehensive documentation and examples that will help you understand how to implement and utilize this powerful tool effectively.

Key Points

  • Code Graph RAG is an AI-powered tool for code analysis.
  • It supports various programming languages and frameworks.
  • The GitHub repository contains extensive documentation and examples.

Detailed Explanation

Code Graph RAG (Retrieval-Augmented Generation) is an innovative tool that leverages AI to enhance code understanding and generation. By visiting the GitHub repository, you can access the following resources:

  1. Installation Guide: Detailed instructions for setting up Code Graph RAG on your local machine.
  2. Usage Examples: Sample code snippets and projects demonstrating the tool’s capabilities across multiple programming languages, such as Python, Java, and JavaScript.
  3. Community Support: Engage with other users through discussions, issues, and contributions to improve the tool.

To effectively utilize Code Graph RAG, consider the following steps:

  • Clone the repository to your local environment using Git.
  • Follow the installation instructions to set up dependencies.
  • Explore the examples provided to understand practical applications.

Best Practices / Tips

  • Start Small: Begin with simple projects to familiarize yourself with the tool’s features before tackling more complex applications.
  • Explore the Documentation: Invest time in reading the official documentation to fully understand the capabilities and limitations of Code Graph RAG.
  • Contribute to the Community: Join discussions, report issues, and contribute enhancements to the GitHub repository to improve your skills and help others.

Additional Resources

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