Grpc Invoke MCP Server

@grulex

Basic information

About Grpc Invoke MCP Server

grpc-invoke-mcp is an MCP server for calling gRPC methods from AI agents like Claude Code, Codex, Cursor, and other MCP-compatible tools.

#grpc #tools#invoke

Grpc Invoke MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "grpc-invoke": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@grulex/grpc-invoke-mcp@latest"
      ]
    }
  }
}

Grpc Invoke MCP Server tools

Call a unary gRPC method using JSON input. Supports server reflection or local .proto files.

Describe gRPC services, methods, or message symbols using server reflection or local .proto files.

Overview

What is Grpc Invoke Mcp?

Grpc Invoke Mcp is an MCP server that lets AI agents (Claude Code, Codex, Cursor, etc.) inspect gRPC APIs and invoke unary RPCs. It supports either server reflection or local .proto files, enabling agents to explore services, understand schemas, and make real gRPC calls without writing one-off scripts.

How to use Grpc Invoke Mcp?

Install and run with npx -y @grulex/grpc-invoke-mcp@latest. Then add it as a stdio MCP server in your agent’s configuration file (e.g., .mcp.json for Claude Code, .codex/config.toml for Codex, or .cursor/mcp.json for Cursor). The package downloads a platform-specific binary during installation.

Key features of Grpc Invoke Mcp

Call gRPC methods from MCP-compatible agents
Describe services, methods, and message types
Use server reflection or local .proto files
Connect over TLS or plaintext HTTP/2
Send custom metadata headers
Pass JSON request bodies for unary RPCs

Use cases of Grpc Invoke Mcp

Let an agent explore and call internal microservices
Test request and response payloads during development
Send auth headers or other gRPC metadata
Inspect gRPC APIs from local, staging, or production endpoints
Automate gRPC integration testing in agent-driven workflows

Frequently asked questions

What tools does Grpc Invoke Mcp provide?

Two tools: `grpc_describe` for schema inspection and `grpc_call` for invoking unary RPCs.

How do I install Grpc Invoke Mcp?

Run `npx -y @grulex/grpc-invoke-mcp@latest`. A platform-specific binary is downloaded during installation. Node.js and npx must be in your PATH.

Does Grpc Invoke Mcp require gRPC reflection?

No. If the target server does not expose reflection, you can use local `.proto` files and import paths instead.

What platforms are supported?

macOS (Apple Silicon and Intel), Linux (x64 and ARM64), and Windows (x64 and ARM64).

What if the binary download fails during installation?

Your machine needs network access to GitHub Releases. Ensure internet connectivity and retry.

Comments

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