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Write Model Context Protocol servers in few lines of go code. Docs at https://mcpgolang.com . Created by https://metoro.io
| Date | Stars |
|---|---|
| 2026-07-31 | 1226 |
| 2026-08-01 | 1226 |
| 2026-08-06 | 1226 |
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<img src="./resources/mcp-golang-logo.webp" height="300" alt="Statusphere logo">
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[](https://pkg.go.dev/github.com/metoro-io/mcp-golang)
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# mcp-golang
mcp-golang is an unofficial implementation of the [Model Context Protocol](https://modelcontextprotocol.io/) in Go.
Write MCP servers and clients in golang with a few lines of code.
Docs at [https://mcpgolang.com](https://mcpgolang.com)
## Highlights
- 🛡️**Type safety** - Define your tool arguments as native go structs, have mcp-golang handle the rest. Automatic schema generation, deserialization, error handling etc.
- 🚛 **Custom transports** - Use the built-in transports (stdio for full feature support, HTTP for stateless communication) or write your own.
- ⚡ **Low boilerplate** - mcp-golang generates all the MCP endpoints for you apart from your tools, prompts and resources.
- 🧩 **Modular** - The library is split into three components: transport, protocol and server/client. Use them all or take what you need.
- 🔄 **Bi-directional** - Full support for both server and client implementations through stdio transport.
## Example Usage
Install with `go get github.com/metoro-io/mcp-golang`
### Server Example
```go
package main
import (
"fmt"
"github.com/metoro-io/mcp-golang"
"github.com/metoro-io/mcp-golang/transport/stdio"
)
// Tool arguments are just structs, annotated with jsonschema tags
// More at https://mcpgolang.com/tools#schema-generation
type Content struct {
Title string `json:"title" jsonschema:"required,description=The title to submit"`
Description *string `json:"description" jsonschema:"description=The description to submit"`
}
type MyFunctionsArguments struct {
Submitter string `json:"submitter" jsonschema:"required,description=The name of the thing calling this tool (openai, google, claude, etc)"`
Content Content `json:"content" jsonschema:"required,description=The content of the message"`
}
func main() {
done := make(chan struct{})
server := mcp_golang.NewServer(stdio.NewStdioServerTransport())
err := server.RegisterTool("hello", "Say hello to a person", func(arguments MyFunctionsArguments) (*mcp_golang.ToolResponse, error) {
return mcp_golang.NewToolResponse(mcp_golang.NewTextContent(fmt.Sprintf("Hello, %server!", arguments.Submitter))), nil
})
if err != nil {
panic(err)
}
err = server.RegisterPrompt("promt_test", "This is a test prompt", func(arguments Content) (*mcp_golang.PromptResponse, error) {
return mcp_golang.NewPromptResponse("description", mcp_golang.NewPromptMessage(mcp_golang.NewTextContent(fmt.Sprintf("Hello, %server!", arguments.Title)), mcp_golang.RoleUser)), nil
})
if err != nil {
panic(err)
}
err = server.RegisterResource("test://resource", "resource_test", "This is a test resource", "application/json", func() (*mcp_golang.ResourceResponse, error) {
return mcp_golang.NewResourceResponse(mcp_golang.NewTextEmbeddedResource("test://resource", "This is a test resource", "application/json")), nil
})
err = server.Serve()
if err != nil {
panic(err)
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Alexander Matyushentsev · @akuity · United States
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Would you bet a product on this? Bounded 0–100 and slow moving.
matched fp:98318dec06ca3363, desc:model context protocol