gRPC Zig
blazigly fast gRPC/MCP client & server implementation in zig
What is gRPC Zig?
gRPC Zig is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to blazigly fast grpc/mcp client & server implementation in zig
blazigly fast gRPC/MCP client & server implementation in zig
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- blazigly fast gRPC/MCP client & server implementation in zig
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx grpc-zigConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use gRPC Zig
gRPC-zig is a high-performance gRPC and MCP client and server library written in the Zig programming language, providing full HTTP/2 support with flow control, JWT authentication, TLS encryption, compression (gzip and deflate), bi-directional streaming, and a built-in health checking system. It is designed as a native Zig package that developers can import into their Zig projects to build blazingly fast RPC services. The library includes a benchmark tool for load testing and integration test helpers, making it suitable for production-grade microservice architectures where performance and low latency are critical.
Prerequisites
- Zig compiler (0.12.0 or newer) installed — download from ziglang.org
- Git installed for dependency management
- Basic familiarity with Zig's build system (build.zig and build.zig.zon)
- A gRPC-compatible server or client to interact with (for client usage)
Add gRPC-zig as a dependency
Use the zig fetch command to add the gRPC-zig package to your project's build.zig.zon dependency file.
zig fetch --save git+https://github.com/ziglana/gRPC-zig#mainImport the modules in build.zig
In your project's build.zig file, declare the dependency and import both the grpc-server and grpc-client modules into your executable.
const grpc_zig_dep = b.dependency("grpc_zig", .{
.target = target,
.optimize = optimize,
});
exe.root_module.addImport("grpc-server", grpc_zig_dep.module("grpc-server"));
exe.root_module.addImport("grpc-client", grpc_zig_dep.module("grpc-client"));Initialize a gRPC server in your Zig code
Use GrpcServer.init to start a server on a port with a secret key for JWT authentication.
const grpc = @import("grpc-server");
var server = try grpc.GrpcServer.init(allocator, 50051, "your-secret-key");
try server.start();Initialize a gRPC client and make calls
Use GrpcClient.init to connect to a server and call remote procedures.
const grpc = @import("grpc-client");
var client = try grpc.GrpcClient.init(allocator, "localhost", 50051);
const response = try client.call("SayHello", "World", .none);Run tests to verify the setup
Run the unit and integration tests to confirm everything is working correctly in your environment.
zig build test
zig build integration_testBenchmark performance (optional)
Use the built-in benchmark tool to measure throughput and latency under load.
zig build benchmark
./zig-out/bin/grpc-benchmark --requests 1000 --clients 10 --output jsongRPC Zig Examples
Client configuration
Example build.zig.zon dependency declaration and build.zig import for integrating gRPC-zig into a Zig project. Note: this is a library, not a standalone MCP server with a JSON config.
// build.zig.zon
.{
.name = "my-grpc-app",
.version = "0.1.0",
.dependencies = .{
.grpc_zig = .{
.url = "git+https://github.com/ziglana/gRPC-zig#main",
},
},
}Prompts to try
Example use cases for the gRPC-zig library in Zig projects.
- Start a gRPC server on port 50051 with JWT auth and TLS
- Create a gRPC client that calls a remote 'SayHello' procedure
- Run a benchmark with 1000 requests across 10 concurrent clients
- Enable gzip compression on the server for all responses
- Set up bi-directional streaming between a Zig client and server
- Run integration tests against a local gRPC server instanceTroubleshooting gRPC Zig
zig fetch fails with a hash mismatch or network error
Try running 'zig fetch --save git+https://github.com/ziglana/gRPC-zig#main' again — transient network issues can cause failures. If the hash in build.zig.zon is stale, delete it and re-run zig fetch to regenerate.
Compilation fails with 'module not found: grpc-server'
Ensure your build.zig correctly calls 'b.dependency("grpc_zig", ...)' with the exact name matching the key in build.zig.zon, and that both addImport calls are present before the exe is added to the install step.
Integration tests fail with connection refused
The integration tests require a running server. Check the integration_test directory for a run_tests.sh script: 'cd integration_test && ./run_tests.sh'. Ensure no other process is binding to the test port (default 50051).
Frequently Asked Questions about gRPC Zig
What is gRPC Zig?
gRPC Zig is a Model Context Protocol (MCP) server that blazigly fast grpc/mcp client & server implementation in zig It connects AI assistants to external tools and data sources through a standardized interface.
How do I install gRPC Zig?
Follow the installation instructions on the gRPC Zig GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with gRPC Zig?
gRPC Zig works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is gRPC Zig free to use?
Yes, gRPC Zig is open source and available under the Unlicense license. You can use it freely in both personal and commercial projects.
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Set Up gRPC Zig in Your Editor
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Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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