diff --git a/cmd/protoc-gen-openapi/generator/generator.go b/cmd/protoc-gen-openapi/generator/generator.go
index 3e5e4c28..cc9d1c02 100644
--- a/cmd/protoc-gen-openapi/generator/generator.go
+++ b/cmd/protoc-gen-openapi/generator/generator.go
@@ -32,6 +32,7 @@ import (
 	any_pb "google.golang.org/protobuf/types/known/anypb"
 
 	wk "github.com/fern-api/protoc-gen-openapi/cmd/protoc-gen-openapi/generator/wellknown"
+	fernoptions "github.com/fern-api/protoc-gen-openapi/extensions/fern"
 	v3 "github.com/fern-api/protoc-gen-openapi/openapiv3"
 )
 
@@ -761,6 +762,13 @@ func (g *OpenAPIv3Generator) addPathsToDocumentV3(d *v3.Document, services []*pr
 					op, path2 := g.buildOperationV3(
 						d, operationID, service.GoName, comment, defaultHost, path, body, inputMessage, outputMessage)
 
+					extFernSummary := proto.GetExtension(method.Desc.Options(), fernoptions.E_Summary)
+					if extFernSummary != nil {
+						if summary, ok := extFernSummary.(string); ok && summary != "" {
+							op.Summary = summary
+						}
+					}
+
 					// Merge any `Operation` annotations with the current
 					extOperation := proto.GetExtension(method.Desc.Options(), v3.E_Operation)
 					if extOperation != nil {
@@ -1179,4 +1187,4 @@ func (g *OpenAPIv3Generator) addOneOfFieldsToSchema(d *v3.Document, oneofs []*pr
 			},
 		)
 	}
-}
\ No newline at end of file
+}
diff --git a/extensions/fern/options.pb.go b/extensions/fern/options.pb.go
new file mode 100644
index 00000000..9632b30e
--- /dev/null
+++ b/extensions/fern/options.pb.go
@@ -0,0 +1,85 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.10
+// 	protoc        v6.33.0
+// source: extensions/fern/options.proto
+
+package fern
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	descriptorpb "google.golang.org/protobuf/types/descriptorpb"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+var file_extensions_fern_options_proto_extTypes = []protoimpl.ExtensionInfo{
+	{
+		ExtendedType:  (*descriptorpb.MethodOptions)(nil),
+		ExtensionType: (*string)(nil),
+		Field:         51001,
+		Name:          "fern.summary",
+		Tag:           "bytes,51001,opt,name=summary",
+		Filename:      "extensions/fern/options.proto",
+	},
+}
+
+// Extension fields to descriptorpb.MethodOptions.
+var (
+	// Custom summary for the RPC method that will be used as the OpenAPI operation summary.
+	// This overrides any auto-generated summary.
+	//
+	// optional string summary = 51001;
+	E_Summary = &file_extensions_fern_options_proto_extTypes[0]
+)
+
+var File_extensions_fern_options_proto protoreflect.FileDescriptor
+
+const file_extensions_fern_options_proto_rawDesc = "" +
+	"\n" +
+	"\x1dextensions/fern/options.proto\x12\x04fern\x1a google/protobuf/descriptor.proto::\n" +
+	"\asummary\x12\x1e.google.protobuf.MethodOptions\x18\xb9\x8e\x03 \x01(\tR\asummaryB8Z6github.com/fern-api/protoc-gen-openapi/extensions/fernb\x06proto3"
+
+var file_extensions_fern_options_proto_goTypes = []any{
+	(*descriptorpb.MethodOptions)(nil), // 0: google.protobuf.MethodOptions
+}
+var file_extensions_fern_options_proto_depIdxs = []int32{
+	0, // 0: fern.summary:extendee -> google.protobuf.MethodOptions
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	0, // [0:1] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_extensions_fern_options_proto_init() }
+func file_extensions_fern_options_proto_init() {
+	if File_extensions_fern_options_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_extensions_fern_options_proto_rawDesc), len(file_extensions_fern_options_proto_rawDesc)),
+			NumEnums:      0,
+			NumMessages:   0,
+			NumExtensions: 1,
+			NumServices:   0,
+		},
+		GoTypes:           file_extensions_fern_options_proto_goTypes,
+		DependencyIndexes: file_extensions_fern_options_proto_depIdxs,
+		ExtensionInfos:    file_extensions_fern_options_proto_extTypes,
+	}.Build()
+	File_extensions_fern_options_proto = out.File
+	file_extensions_fern_options_proto_goTypes = nil
+	file_extensions_fern_options_proto_depIdxs = nil
+}
diff --git a/extensions/fern/options.proto b/extensions/fern/options.proto
new file mode 100644
index 00000000..400ab8f8
--- /dev/null
+++ b/extensions/fern/options.proto
@@ -0,0 +1,13 @@
+syntax = "proto3";
+
+package fern;
+
+import "google/protobuf/descriptor.proto";
+
+option go_package = "github.com/fern-api/protoc-gen-openapi/extensions/fern";
+
+extend google.protobuf.MethodOptions {
+  // Custom summary for the RPC method that will be used as the OpenAPI operation summary.
+  // This overrides any auto-generated summary.
+  string summary = 51001;
+}