Convert to modelcontextprotocol/go-sdk (#1428)

Move from `mark3labs/mcp-go` to `modelcontextprotocol/go-sdk`.

This is mostly focused on updating tool schema and tool handler signatures, along with any associated internal changes related to those changes.

---------

Co-authored-by: Copilot <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: omgitsads <[email protected]>
Co-authored-by: LuluBeatson <[email protected]>
Co-authored-by: Lulu <[email protected]>
Co-authored-by: SamMorrowDrums <[email protected]>
Co-authored-by: Sam Morrow <[email protected]>

Author: 5 people

.github/copilot-instructions.md

@@ -9,7 +9,7 @@ This is the **GitHub MCP Server**, a Model Context Protocol (MCP) server that co
 - **Type:** MCP server application with CLI interface
 - **Primary Package:** github-mcp-server (stdio MCP server - **this is the main focus**)
 - **Secondary Package:** mcpcurl (testing utility - don't break it, but not the priority)
-- **Framework:** Uses mark3labs/mcp-go for MCP protocol, google/go-github for GitHub API
+- **Framework:** Uses modelcontextprotocol/go-sdk for MCP protocol, google/go-github for GitHub API
 - **Size:** ~60MB repository, 70 Go files
 - **Library Usage:** This repository is also used as a library by the remote server. Functions that could be called by other repositories should be exported (capitalized), even if not required internally. Preserve existing export patterns.
 

README.md

@@ -719,8 +719,8 @@ The following sets of tools are available:
 
 - **issue_read** - Get issue details
   - `issue_number`: The number of the issue (number, required)
-  - `method`: The read operation to perform on a single issue. 
-Options are: 
+  - `method`: The read operation to perform on a single issue.
+Options are:
 1. get - Get details of a specific issue.
 2. get_comments - Get issue comments.
 3. get_sub_issues - Get sub-issues of the issue.
@@ -738,8 +738,8 @@ Options are:
   - `issue_number`: Issue number to update (number, optional)
   - `labels`: Labels to apply to this issue (string[], optional)
   - `method`: Write operation to perform on a single issue.
-Options are: 
-- 'create' - creates a new issue. 
+Options are:
+- 'create' - creates a new issue.
 - 'update' - updates an existing issue.
  (string, required)
   - `milestone`: Milestone number (number, optional)
@@ -819,7 +819,7 @@ Options are:
 <summary>Notifications</summary>
 
 - **dismiss_notification** - Dismiss notification
-  - `state`: The new state of the notification (read/done) (string, optional)
+  - `state`: The new state of the notification (read/done) (string, required)
   - `threadID`: The ID of the notification thread (string, required)
 
 - **get_notification_details** - Get notification details

cmd/github-mcp-server/generate_docs.go

@@ -15,7 +15,8 @@ import (
 	"github.com/github/github-mcp-server/pkg/toolsets"
 	"github.com/github/github-mcp-server/pkg/translations"
 	gogithub "github.com/google/go-github/v79/github"
-	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/mcp"
 	"github.com/shurcooL/githubv4"
 	"github.com/spf13/cobra"
 )
@@ -226,7 +227,16 @@ func generateToolDoc(tool mcp.Tool) string {
 	lines = append(lines, fmt.Sprintf("- **%s** - %s", tool.Name, tool.Annotations.Title))
 
 	// Parameters
-	schema := tool.InputSchema
+	if tool.InputSchema == nil {
+		lines = append(lines, "  - No parameters required")
+		return strings.Join(lines, "\n")
+	}
+	schema, ok := tool.InputSchema.(*jsonschema.Schema)
+	if !ok || schema == nil {
+		lines = append(lines, "  - No parameters required")
+		return strings.Join(lines, "\n")
+	}
+
 	if len(schema.Properties) > 0 {
 		// Get parameter names and sort them for deterministic order
 		var paramNames []string
@@ -243,30 +253,22 @@ func generateToolDoc(tool mcp.Tool) string {
 				requiredStr = "required"
 			}
 
-			// Get the type and description
-			typeStr := "unknown"
-			description := ""
-
-			if propMap, ok := prop.(map[string]interface{}); ok {
-				if typeVal, ok := propMap["type"].(string); ok {
-					if typeVal == "array" {
-						if items, ok := propMap["items"].(map[string]interface{}); ok {
-							if itemType, ok := items["type"].(string); ok {
-								typeStr = itemType + "[]"
-							}
-						} else {
-							typeStr = "array"
-						}
-					} else {
-						typeStr = typeVal
-					}
-				}
+			var typeStr, description string
 
-				if desc, ok := propMap["description"].(string); ok {
-					description = desc
+			// Get the type and description
+			switch prop.Type {
+			case "array":
+				if prop.Items != nil {
+					typeStr = prop.Items.Type + "[]"
+				} else {
+					typeStr = "array"
 				}
+			default:
+				typeStr = prop.Type
 			}
 
+			description = prop.Description
+
 			paramLine := fmt.Sprintf("  - `%s`: %s (%s, %s)", propName, description, typeStr, requiredStr)
 			lines = append(lines, paramLine)
 		}