go get github.com/BrunoKrugel/echo-mcp

package main

import (
    "net/http"
    server "github.com/BrunoKrugel/echo-mcp"
    "github.com/labstack/echo/v4"
)

func main() {
    e := echo.New()

    // Existing API routes
    e.GET("/ping", func(c echo.Context) error {
        return c.JSON(http.StatusOK, map[string]string{"message": "pong"})
    })

    // Add MCP support
    mcp := server.New(e)
    mcp.Mount("/mcp")

    e.Start(":8080")
}

// @Summary Get user by ID
// @Description Retrieve detailed user information
// @Tags users
// @Param id path int true "User ID" minimum(1)
// @Success 200 {object} User
// @Router /users/{id} [get]
func GetUser(c echo.Context) error {
    // Your handler code
}

func main() {
    e := echo.New()
    e.GET("/users/:id", GetUser)

    // Enable automatic swagger schema generation
    mcp := server.NewWithConfig(e, &server.Config{
        BaseURL:              "http://localhost:8080",
        EnableSwaggerSchemas: true,
    })
    mcp.Mount("/mcp")

    e.Start(":8080")
}

import (
    "github.com/swaggest/openapi-go/openapi3"
    server "github.com/BrunoKrugel/echo-mcp"
)

func main() {
    e := echo.New()

    // ... define your routes ...

    // Generate OpenAPI schema
    reflector := openapi3.Reflector{}
    reflector.SpecEns().WithOpenapi("3.0.3")
    reflector.SpecEns().Info.WithTitle("My API").WithVersion("1.0.0")

    // Add operations to reflector
    // ...

    // Export to YAML (or JSON)
    schema, _ := reflector.Spec.MarshalYAML()

    // Pass raw schema to MCP server
    // ... you can also embed the schema from an exiting openapi.yaml file
    mcp := server.NewWithConfig(e, &server.Config{
        OpenAPISchema: string(schema),
    })
    mcp.Mount("/mcp")

    e.Start(":8080")
}

mcp := server.New(e)

// Include only specific endpoints
mcp.RegisterEndpoints([]string{
    "/api/v1/users/:id",
    "/api/v1/orders",
})

// Or exclude internal endpoints
mcp.ExcludeEndpoints([]string{
    "/health",      // Exclude health checks
})

type CreateUserRequest struct {
    Name  string `json:"name" jsonschema:"required,description=User full name"`
    Email string `json:"email" jsonschema:"required,description=User email address"`
    Age   int    `json:"age,omitempty" jsonschema:"minimum=0,maximum=150"`
}

type UserQuery struct {
    Page   int    `form:"page,default=1" jsonschema:"minimum=1"`
    Limit  int    `form:"limit,default=10" jsonschema:"maximum=100"`
    Active bool   `form:"active" jsonschema:"description=Filter by active status"`
}

mcp := server.New(e, &server.Config{BaseURL: "http://localhost:8080"})

// Register schemas for specific routes
mcp.RegisterSchema("POST", "/users", nil, CreateUserRequest{})
mcp.RegisterSchema("GET", "/users", UserQuery{}, nil)

// Option 1: Using raw OpenAPI schema (swaggest/openapi-go, etc.)
schema, _ := reflector.Spec.MarshalYAML()
mcp := server.New(e, &server.Config{
    OpenAPISchema: string(schema), // Use raw schema
})

// Option 2: Using Swaggo
mcp := server.New(e, &server.Config{
    EnableSwaggerSchemas: true, // Load from swaggo docs
})

// Option 3: Manual schemas for fine-grained control
mcp.RegisterSchema("POST", "/users", nil, CreateUserRequest{})

// Option 4: Automatic inference (fallback)
// No configuration needed - routes will use basic path/body inference

{
  "mcpServers": {
    "echo-api": {
      "type": "http",
      "url": "http://localhost:8080/mcp",
      "timeout": 120
    },
  }
}

npx @modelcontextprotocol/inspector http://localhost:8080/mcp