jsonschema: experiment with a proxy package

Use a proxy package to limit the visibility of the jsonschema package
and guard against incompatible API changes.

DO NOT REVIEW: experiment
DO NOT SUBMIT

Author: findleyr

examples/server/elicitation/main.go

@@ -9,7 +9,7 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 

examples/server/everything/main.go

@@ -17,7 +17,7 @@ import (
 	"runtime"
 	"strings"
 
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 

examples/server/middleware/main.go

@@ -11,7 +11,7 @@ import (
 	"os"
 	"time"
 
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 

examples/server/toolschemas/main.go

@@ -13,7 +13,7 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 

jsonschema/jsonschema.go

@@ -0,0 +1,31 @@
+// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package jsonschema
+
+import (
+	"reflect"
+
+	"github.com/google/jsonschema-go/jsonschema"
+)
+
+func Ptr[T any](x T) *T {
+	return jsonschema.Ptr(x)
+}
+
+type ForOptions = jsonschema.ForOptions
+
+type Resolved = jsonschema.Resolved
+
+type ResolveOptions = jsonschema.ResolveOptions
+
+type Schema = jsonschema.Schema
+
+func For[T any](opts *ForOptions) (*Schema, error) {
+	return jsonschema.For[T](opts)
+}
+
+func ForType(t reflect.Type, opts *ForOptions) (*Schema, error) {
+	return jsonschema.ForType(t, opts)
+}

mcp/client.go

@@ -13,9 +13,9 @@ import (
 	"sync"
 	"time"
 
-	"github.com/google/jsonschema-go/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2"
 	"github.com/modelcontextprotocol/go-sdk/jsonrpc"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 )
 
 // A Client is an MCP client, which may be connected to an MCP server

mcp/client_example_test.go

@@ -9,7 +9,7 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 

mcp/client_list_test.go

@@ -12,7 +12,7 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 )
 

mcp/client_test.go

@@ -11,7 +11,7 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/google/jsonschema-go/jsonschema"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 )
 
 type Item struct {

mcp/conformance_test.go

@@ -24,9 +24,9 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/google/jsonschema-go/jsonschema"
 	"github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2"
 	"github.com/modelcontextprotocol/go-sdk/jsonrpc"
+	"github.com/modelcontextprotocol/go-sdk/jsonschema"
 	"golang.org/x/tools/txtar"
 )