

Production-ready MCP server framework and firewall that protects MCP providers from prompt injections and PII leaks.

Production-ready MCP server framework and firewall that protects MCP providers from prompt injections and PII leaks.
Golf is an open-source, production-ready MCP server framework and security layer for MCP providers. It lets developers define an MCP's capabilities — tools, prompts, and resources — as simple Python files which Golf discovers, compiles, and runs as a secure MCP server powering AI agents. Golf adds a firewall/security layer to detect and mitigate prompt-injection, PII leakage, and other agent-safety issues while providing built-in Auth, Observability, Debugger, Telemetry and Runtime components for production deployments. The project includes testing tooling to validate performance, security and compliance of MCPs and collects anonymous CLI usage data to improve the framework over time.




Golf offers a free open-source version under the Apache-2.0 license, ideal for self-hosting. For organizations needing enhanced support and features, custom enterprise pricing is available. Contact Golf directly for specific rates tailored to your deployment requirements.
Golf is a powerful tool for developers, providing a free open-source version that allows for flexibility and customization. This version is suited for self-hosting, making it an appealing choice for individual developers and small teams.
For larger organizations or those requiring more robust solutions, Golf offers custom enterprise pricing. This option includes additional support, tailored features, and possibly enhanced security measures, depending on the organization’s needs. Organizations interested in these features should reach out to Golf directly to discuss their requirements and receive a tailored quote.
Golf utilizes a robust MCP firewall to detect and block prompt injections, effectively preventing Personally Identifiable Information (PII) leakage. This advanced security feature ensures secure interactions between users and AI agents, making it crucial for maintaining data privacy and compliance with regulations like GDPR.
Golf’s MCP (Multi-Layered Control Protocol) firewall acts as the first line of defense against cyber threats, specifically designed to identify and mitigate prompt injections. Prompt injections are malicious attempts to manipulate AI responses by delivering harmful inputs. By preventing these attacks, Golf safeguards users' sensitive data, including PII, from unauthorized access.
In addition to the MCP firewall, Golf employs robust data encryption methods. This means that any data transmitted between users and AI agents is encrypted, making it nearly impossible for interceptors to access or decipher sensitive information. For example, when a user inputs their personal details, the data is encrypted before being sent to the server, ensuring that it remains confidential.
Furthermore, Golf implements strong user authentication protocols, requiring users to verify their identity before accessing sensitive features. This two-factor authentication (2FA) process adds an additional layer of security, ensuring that only authorized personnel can interact with the AI, further protecting against potential data breaches.
By implementing these features and best practices, Golf not only protects against PII leaks but also fosters a secure environment for all users, ensuring confidence in AI interactions.
To get started with using Golf for your AI project, download the open-source framework from the official Golf website, set up a Python environment, and consult the comprehensive documentation to define your tools and prompts for the MCP server effectively.
Download the Framework: Begin by visiting the official Golf website. Choose the version compatible with your operating system. The installation files are provided in various formats, including ZIP and TAR.GZ for easy extraction.
Set Up Python Environment: Install Python (preferably version 3.7 or above). Use a virtual environment to manage dependencies without conflicts. You can create a virtual environment by running:
python -m venv golf_env
source golf_env/bin/activate # On Windows use `golf_env\Scripts\activate`
This isolates your Golf project and its libraries.
Consult Documentation: The documentation is your best resource for learning how to use Golf effectively. Navigate to the docs section on the Golf website, where you'll find:
Golf requires a compatible Python environment, typically Python 3.6 or higher, along with necessary libraries such as NumPy and Pandas. It's essential to configure your deployment environment correctly to ensure optimal performance and compatibility with various platforms.
To deploy Golf effectively, start by ensuring you have Python 3.6 or later installed on your system. You can download the latest version from the official Python website. After installing Python, verify your installation by running python --version in your command line or terminal.
Next, install the necessary libraries. You can do this easily using pip, Python's package installer. Open your command line and execute the following commands:
pip install numpy
pip install pandas
These libraries are crucial for Golf’s data handling and computational tasks. Depending on the specific features you plan to utilize within Golf, you might also need other libraries, such as Matplotlib for plotting or SciPy for additional scientific computations.
Once your environment is set up, you can choose from different deployment configurations. Golf supports local deployment for testing and development, as well as cloud deployment for production scenarios. For local deployment, simply run your scripts in your terminal. For cloud-based deployment, consider using platforms like AWS, Google Cloud, or Azure, which provide infrastructure tailored for Python applications.
venv or conda) to manage dependencies and avoid conflicts between projects.By following these best practices, you can minimize common pitfalls, such as library version conflicts and deployment errors.
Golf excels in security features compared to other MCP frameworks, primarily due to its dedicated MCP firewall that safeguards against prompt injections and personally identifiable information (PII) leaks. Additionally, its integrated telemetry allows for real-time monitoring, making it a highly secure choice for AI agent deployment.
Golf’s security framework is built around a dedicated MCP firewall that actively monitors and filters incoming and outgoing traffic. This firewall is essential for preventing prompt injections, a common attack vector where malicious inputs are inserted into AI prompts, potentially leading to data breaches or unauthorized actions.
The firewall's capability to protect against PII leaks is equally significant, ensuring that sensitive user information remains confidential. This is crucial in industries that handle personal data, such as finance and healthcare. For example, if an AI agent processes customer queries in a financial service, the firewall ensures that sensitive information like bank account numbers and social security numbers are not exposed.
Further enhancing Golf's security is its integrated telemetry system, which continuously tracks performance and security events. This allows organizations to quickly identify and respond to potential threats. Real-time monitoring means that security teams can act swiftly, reducing the risk of data breaches or other security incidents.
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