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agent_patch

runs/2026-02-28__13-38-10__gpt-5-1-codex-mini/flux-pr-1099/flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/agent-logs/agent.patch

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diff --git a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/pkg/astvalidation/operation_rule_valid_arguments.go b/app/pkg/astvalidation/operation_rule_valid_arguments.go
index f352260..086810b 100644
--- a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/pkg/astvalidation/operation_rule_valid_arguments.go
+++ b/app/pkg/astvalidation/operation_rule_valid_arguments.go
@@ -1,184 +1,7 @@
 package astvalidation
 
-import (
-	"bytes"
-	"fmt"
-
-	"github.com/wundergraph/graphql-go-tools/pkg/ast"
-	"github.com/wundergraph/graphql-go-tools/pkg/astvisitor"
-	"github.com/wundergraph/graphql-go-tools/pkg/operationreport"
-)
-
-// ValidArguments validates if arguments are valid: values and variables has compatible types
-// deep variables comparison is handled by Values
+// ValidArguments validates if arguments are valid: values and variables have compatible types.
+// This rule now reuses the Values rule to avoid duplicated logic.
 func ValidArguments() Rule {
-	return func(walker *astvisitor.Walker) {
-		visitor := validArgumentsVisitor{
-			Walker: walker,
-		}
-		walker.RegisterEnterDocumentVisitor(&visitor)
-		walker.RegisterEnterArgumentVisitor(&visitor)
-	}
-}
-
-type validArgumentsVisitor struct {
-	*astvisitor.Walker
-	operation, definition *ast.Document
-}
-
-func (v *validArgumentsVisitor) EnterDocument(operation, definition *ast.Document) {
-	v.operation = operation
-	v.definition = definition
-}
-
-func (v *validArgumentsVisitor) EnterArgument(ref int) {
-	definitionRef, exists := v.ArgumentInputValueDefinition(ref)
-
-	if !exists {
-		return
-	}
-
-	value := v.operation.ArgumentValue(ref)
-	v.validateIfValueSatisfiesInputFieldDefinition(value, definitionRef)
-}
-
-func (v *validArgumentsVisitor) validateIfValueSatisfiesInputFieldDefinition(value ast.Value, inputValueDefinitionRef int) {
-	var (
-		satisfied             bool
-		operationTypeRef      int
-		variableDefinitionRef int
-	)
-
-	switch value.Kind {
-	case ast.ValueKindVariable:
-		satisfied, operationTypeRef, variableDefinitionRef = v.variableValueSatisfiesInputValueDefinition(value.Ref, inputValueDefinitionRef)
-	case ast.ValueKindEnum,
-		ast.ValueKindNull,
-		ast.ValueKindBoolean,
-		ast.ValueKindInteger,
-		ast.ValueKindString,
-		ast.ValueKindFloat,
-		ast.ValueKindObject,
-		ast.ValueKindList:
-		// this types of values are covered by Values() / valuesVisitor
-		return
-	default:
-		v.StopWithInternalErr(fmt.Errorf("validateIfValueSatisfiesInputFieldDefinition: not implemented for value.Kind: %s", value.Kind))
-		return
-	}
-
-	if satisfied {
-		return
-	}
-
-	if operationTypeRef == ast.InvalidRef {
-		// variable is not defined on operation
-		return
-	}
-
-	printedValue, err := v.operation.PrintValueBytes(value, nil)
-	if v.HandleInternalErr(err) {
-		return
-	}
-
-	typeRef := v.definition.InputValueDefinitionType(inputValueDefinitionRef)
-	expectedTypeName, err := v.definition.PrintTypeBytes(typeRef, nil)
-	if v.HandleInternalErr(err) {
-		return
-	}
-
-	actualTypeName, err := v.operation.PrintTypeBytes(operationTypeRef, nil)
-	if v.HandleInternalErr(err) {
-		return
-	}
-
-	v.StopWithExternalErr(operationreport.ErrVariableTypeDoesntSatisfyInputValueDefinition(printedValue, actualTypeName, expectedTypeName, value.Position, v.operation.VariableDefinitions[variableDefinitionRef].VariableValue.Position))
-}
-
-func (v *validArgumentsVisitor) variableValueSatisfiesInputValueDefinition(variableValue, inputValueDefinition int) (satisfies bool, operationTypeRef int, variableDefRef int) {
-	variableDefinitionRef, exists := v.variableDefinition(variableValue)
-	if !exists {
-		return false, ast.InvalidRef, variableDefinitionRef
-	}
-
-	operationTypeRef = v.operation.VariableDefinitions[variableDefinitionRef].Type
-	definitionTypeRef := v.definition.InputValueDefinitions[inputValueDefinition].Type
-
-	hasDefaultValue := v.validDefaultValue(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue) ||
-		v.validDefaultValue(v.definition.InputValueDefinitions[inputValueDefinition].DefaultValue)
-
-	return v.operationTypeSatisfiesDefinitionType(operationTypeRef, definitionTypeRef, hasDefaultValue), operationTypeRef, variableDefinitionRef
-}
-
-func (v *validArgumentsVisitor) variableDefinition(variableValueRef int) (ref int, exists bool) {
-	variableName := v.operation.VariableValueNameBytes(variableValueRef)
-
-	if v.Ancestors[0].Kind == ast.NodeKindOperationDefinition {
-		return v.operation.VariableDefinitionByNameAndOperation(v.Ancestors[0].Ref, variableName)
-	}
-
-	for opDefRef := 0; opDefRef < len(v.operation.OperationDefinitions); opDefRef++ {
-		ref, exists = v.operation.VariableDefinitionByNameAndOperation(opDefRef, variableName)
-		if exists {
-			return
-		}
-	}
-
-	return ast.InvalidRef, false
-}
-
-func (v *validArgumentsVisitor) validDefaultValue(value ast.DefaultValue) bool {
-	return value.IsDefined && value.Value.Kind != ast.ValueKindNull
-}
-
-func (v *validArgumentsVisitor) operationTypeSatisfiesDefinitionType(operationTypeRef int, definitionTypeRef int, hasDefaultValue bool) bool {
-	opKind := v.operation.Types[operationTypeRef].TypeKind
-	defKind := v.definition.Types[definitionTypeRef].TypeKind
-
-	// A nullable op type is compatible with a non-null def type if the def has
-	// a default value. Strip the def non-null and continue comparing. This
-	// logic is only valid before any unnesting of types occurs, which is why
-	// it's outside the for loop below.
-	//
-	// Example:
-	// Op:  someField(arg: Boolean): String
-	// Def: someField(arg: Boolean! = false): String  #  Boolean! -> Boolean
-	if opKind != ast.TypeKindNonNull && defKind == ast.TypeKindNonNull && hasDefaultValue {
-		definitionTypeRef = v.definition.Types[definitionTypeRef].OfType
-	}
-
-	// Unnest the op and def arg types until a named type is reached,
-	// then compare.
-	for {
-		if operationTypeRef == -1 || definitionTypeRef == -1 {
-			return false
-		}
-		opKind = v.operation.Types[operationTypeRef].TypeKind
-		defKind = v.definition.Types[definitionTypeRef].TypeKind
-
-		// If the op arg type is stricter than the def arg type, that's okay.
-		// Strip the op non-null and continue comparing.
-		//
-		// Example:
-		// Op:  someField(arg: Boolean!): String  # Boolean! -> Boolean
-		// Def: someField(arg: Boolean): String
-		if opKind == ast.TypeKindNonNull && defKind != ast.TypeKindNonNull {
-			operationTypeRef = v.operation.Types[operationTypeRef].OfType
-			continue
-		}
-
-		if opKind != defKind {
-			return false
-		}
-		if opKind == ast.TypeKindNamed {
-			// defKind is also a named type because at this point both kinds
-			// are the same! Compare the names.
-
-			return bytes.Equal(v.operation.Input.ByteSlice(v.operation.Types[operationTypeRef].Name),
-				v.definition.Input.ByteSlice(v.definition.Types[definitionTypeRef].Name))
-		}
-		// Both types are non-null or list. Unnest and continue comparing.
-		operationTypeRef = v.operation.Types[operationTypeRef].OfType
-		definitionTypeRef = v.definition.Types[definitionTypeRef].OfType
-	}
+	return Values()
 }
diff --git a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/pkg/astvalidation/operation_rule_values.go b/app/pkg/astvalidation/operation_rule_values.go
index 3ae503a..9cb7b2a 100644
--- a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/pkg/astvalidation/operation_rule_values.go
+++ b/app/pkg/astvalidation/operation_rule_values.go
@@ -51,19 +51,15 @@ func (v *valuesVisitor) EnterArgument(ref int) {
 	value := v.operation.ArgumentValue(ref)
 	if value.Kind == ast.ValueKindVariable {
 		variableName := v.operation.VariableValueNameBytes(value.Ref)
-		variableDefinition, exists := v.operation.VariableDefinitionByNameAndOperation(v.Ancestors[0].Ref, variableName)
+		_, exists := v.operation.VariableDefinitionByNameAndOperation(v.Ancestors[0].Ref, variableName)
 		if !exists {
 			operationName := v.operation.OperationDefinitionNameBytes(v.Ancestors[0].Ref)
 			v.StopWithExternalErr(operationreport.ErrVariableNotDefinedOnOperation(variableName, operationName))
 			return
 		}
-		if !v.operation.VariableDefinitions[variableDefinition].DefaultValue.IsDefined {
-			return // variable has no default value, deep type check not required
-		}
-		value = v.operation.VariableDefinitions[variableDefinition].DefaultValue.Value
 	}
 
-	v.valueSatisfiesInputValueDefinitionType(value, v.definition.InputValueDefinitions[definition].Type)
+	v.valueSatisfiesInputValueDefinitionType(value, v.definition.InputValueDefinitions[definition].Type, definition)
 }
 
 func (v *valuesVisitor) valueSatisfiesOperationType(value ast.Value, operationTypeRef int) bool {
@@ -151,7 +147,10 @@ func (v *valuesVisitor) valueSatisfiesOperationListType(value ast.Value, operati
 	return valid
 }
 
-func (v *valuesVisitor) valueSatisfiesInputValueDefinitionType(value ast.Value, definitionTypeRef int) bool {
+func (v *valuesVisitor) valueSatisfiesInputValueDefinitionType(value ast.Value, definitionTypeRef int, inputValueDefinitionRef int) bool {
+	if value.Kind == ast.ValueKindVariable {
+		return v.variableValueSatisfiesInputValueDefinitionType(value, definitionTypeRef, inputValueDefinitionRef)
+	}
 	switch v.definition.Types[definitionTypeRef].TypeKind {
 	case ast.TypeKindNonNull:
 		return v.valuesSatisfiesNonNullType(value, definitionTypeRef)
@@ -166,29 +165,11 @@ func (v *valuesVisitor) valueSatisfiesInputValueDefinitionType(value ast.Value,
 }
 
 func (v *valuesVisitor) valuesSatisfiesNonNullType(value ast.Value, definitionTypeRef int) bool {
-	switch value.Kind {
-	case ast.ValueKindNull:
+	if value.Kind == ast.ValueKindNull {
 		v.handleUnexpectedNullError(value, definitionTypeRef)
 		return false
-	case ast.ValueKindVariable:
-		variableDefinitionRef, variableTypeRef, _, ok := v.operationVariableType(value.Ref)
-		if !ok {
-			v.handleTypeError(value, definitionTypeRef)
-			return false
-		}
-
-		if v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) {
-			return v.valueSatisfiesInputValueDefinitionType(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue.Value, definitionTypeRef)
-		}
-
-		importedDefinitionType := v.importer.ImportType(definitionTypeRef, v.definition, v.operation)
-		if !v.operation.TypesAreEqualDeep(importedDefinitionType, variableTypeRef) {
-			v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-			return false
-		}
-		return true
 	}
-	return v.valueSatisfiesInputValueDefinitionType(value, v.definition.Types[definitionTypeRef].OfType)
+	return v.valueSatisfiesInputValueDefinitionType(value, v.definition.Types[definitionTypeRef].OfType, ast.InvalidRef)
 }
 
 func (v *valuesVisitor) valuesSatisfiesNamedType(value ast.Value, definitionTypeRef int) bool {
@@ -209,37 +190,12 @@ func (v *valuesVisitor) valuesSatisfiesNamedType(value ast.Value, definitionType
 
 func (v *valuesVisitor) valueSatisfiesListType(value ast.Value, definitionTypeRef int, listItemType int) bool {
 
-	if value.Kind == ast.ValueKindVariable {
-		variableDefinitionRef, actualType, _, ok := v.operationVariableType(value.Ref)
-		if !ok {
-			v.handleTypeError(value, definitionTypeRef)
-			return false
-		}
-
-		if v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) {
-			return v.valueSatisfiesInputValueDefinitionType(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue.Value, definitionTypeRef)
-		}
-
-		expectedType := v.importer.ImportType(listItemType, v.definition, v.operation)
-		if v.operation.Types[actualType].TypeKind == ast.TypeKindNonNull {
-			actualType = v.operation.Types[actualType].OfType
-		}
-		if v.operation.Types[actualType].TypeKind == ast.TypeKindList {
-			actualType = v.operation.Types[actualType].OfType
-		}
-		if !v.operation.TypesAreEqualDeep(expectedType, actualType) {
-			v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-			return false
-		}
-		return true
-	}
-
 	if value.Kind == ast.ValueKindNull {
 		return true
 	}
 
 	if value.Kind != ast.ValueKindList {
-		return v.valueSatisfiesInputValueDefinitionType(value, listItemType)
+		return v.valueSatisfiesInputValueDefinitionType(value, listItemType, ast.InvalidRef)
 	}
 
 	if v.definition.Types[listItemType].TypeKind == ast.TypeKindNonNull {
@@ -254,7 +210,7 @@ func (v *valuesVisitor) valueSatisfiesListType(value ast.Value, definitionTypeRe
 
 	for _, i := range v.operation.ListValues[value.Ref].Refs {
 		listValue := v.operation.Value(i)
-		if !v.valueSatisfiesInputValueDefinitionType(listValue, listItemType) {
+		if !v.valueSatisfiesInputValueDefinitionType(listValue, listItemType, ast.InvalidRef) {
 			valid = false
 		}
 	}
@@ -262,6 +218,66 @@ func (v *valuesVisitor) valueSatisfiesListType(value ast.Value, definitionTypeRe
 	return valid
 }
 
+func (v *valuesVisitor) variableValueSatisfiesInputValueDefinitionType(value ast.Value, definitionTypeRef int, inputValueDefinitionRef int) bool {
+	variableDefinitionRef, variableTypeRef, _, ok := v.operationVariableType(value.Ref)
+	if !ok {
+		v.handleTypeError(value, definitionTypeRef)
+		return false
+	}
+
+	expectedType := v.importer.ImportType(definitionTypeRef, v.definition, v.operation)
+	hasDefaultValue := v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) ||
+		v.inputValueDefinitionHasValidDefaultValue(inputValueDefinitionRef)
+
+	if !v.operationTypeSatisfiesDefinitionType(variableTypeRef, expectedType, hasDefaultValue) {
+		v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
+		return false
+	}
+
+	return true
+}
+
+func (v *valuesVisitor) operationTypeSatisfiesDefinitionType(operationTypeRef int, definitionTypeRef int, hasDefaultValue bool) bool {
+	opKind := v.operation.Types[operationTypeRef].TypeKind
+	defKind := v.operation.Types[definitionTypeRef].TypeKind
+
+	if opKind != ast.TypeKindNonNull && defKind == ast.TypeKindNonNull && hasDefaultValue {
+		definitionTypeRef = v.operation.Types[definitionTypeRef].OfType
+	}
+
+	for {
+		if operationTypeRef == ast.InvalidRef || definitionTypeRef == ast.InvalidRef {
+			return false
+		}
+		opKind = v.operation.Types[operationTypeRef].TypeKind
+		defKind = v.operation.Types[definitionTypeRef].TypeKind
+
+		if opKind == ast.TypeKindNonNull && defKind != ast.TypeKindNonNull {
+			operationTypeRef = v.operation.Types[operationTypeRef].OfType
+			continue
+		}
+
+		if opKind != defKind {
+			return false
+		}
+		if opKind == ast.TypeKindNamed {
+			return bytes.Equal(v.operation.Input.ByteSlice(v.operation.Types[operationTypeRef].Name),
+				v.operation.Input.ByteSlice(v.operation.Types[definitionTypeRef].Name))
+		}
+
+		operationTypeRef = v.operation.Types[operationTypeRef].OfType
+		definitionTypeRef = v.operation.Types[definitionTypeRef].OfType
+	}
+}
+
+func (v *valuesVisitor) inputValueDefinitionHasValidDefaultValue(ref int) bool {
+	if ref == ast.InvalidRef {
+		return false
+	}
+	defaultValue := v.definition.InputValueDefinitions[ref].DefaultValue
+	return defaultValue.IsDefined && defaultValue.Value.Kind != ast.ValueKindNull
+}
+
 func (v *valuesVisitor) valueSatisfiesTypeDefinitionNode(value ast.Value, definitionTypeRef int, node ast.Node) bool {
 	switch node.Kind {
 	case ast.NodeKindEnumTypeDefinition:
@@ -275,11 +291,6 @@ func (v *valuesVisitor) valueSatisfiesTypeDefinitionNode(value ast.Value, defini
 }
 
 func (v *valuesVisitor) valueSatisfiesEnum(value ast.Value, definitionTypeRef int, node ast.Node) bool {
-	if value.Kind == ast.ValueKindVariable {
-		expectedTypeName := node.NameBytes(v.definition)
-		return v.variableValueHasMatchingTypeName(value, definitionTypeRef, expectedTypeName)
-	}
-
 	if value.Kind != ast.ValueKindEnum {
 		v.handleUnexpectedEnumValueError(value, definitionTypeRef)
 		return false
@@ -297,10 +308,6 @@ func (v *valuesVisitor) valueSatisfiesEnum(value ast.Value, definitionTypeRef in
 func (v *valuesVisitor) valueSatisfiesScalar(value ast.Value, definitionTypeRef int, scalar int) bool {
 	scalarName := v.definition.ScalarTypeDefinitionNameBytes(scalar)
 
-	if value.Kind == ast.ValueKindVariable {
-		return v.variableValueHasMatchingTypeName(value, definitionTypeRef, scalarName)
-	}
-
 	switch {
 	case bytes.Equal(scalarName, literal.ID):
 		return v.valueSatisfiesScalarID(value, definitionTypeRef)
@@ -408,11 +415,6 @@ func (v *valuesVisitor) valueSatisfiesScalarString(value ast.Value, definitionTy
 }
 
 func (v *valuesVisitor) valueSatisfiesInputObjectTypeDefinition(value ast.Value, definitionTypeRef int, inputObjectTypeDefinition int) bool {
-	if value.Kind == ast.ValueKindVariable {
-		expectedTypeName := v.definition.InputObjectTypeDefinitionNameBytes(inputObjectTypeDefinition)
-		return v.variableValueHasMatchingTypeName(value, definitionTypeRef, expectedTypeName)
-	}
-
 	if value.Kind != ast.ValueKindObject {
 		v.handleNotObjectTypeError(value, definitionTypeRef)
 		return false
@@ -500,7 +502,7 @@ func (v *valuesVisitor) objectValueSatisfiesInputValueDefinition(objectValue ast
 	for _, i := range v.operation.ObjectValues[objectValue.Ref].Refs {
 		if bytes.Equal(name, v.operation.ObjectFieldNameBytes(i)) {
 			value := v.operation.ObjectFieldValue(i)
-			return v.valueSatisfiesInputValueDefinitionType(value, definitionTypeRef)
+			return v.valueSatisfiesInputValueDefinitionType(value, definitionTypeRef, inputValueDefinition)
 		}
 	}
 
@@ -513,25 +515,6 @@ func (v *valuesVisitor) objectValueSatisfiesInputValueDefinition(objectValue ast
 	return true
 }
 
-func (v *valuesVisitor) variableValueHasMatchingTypeName(value ast.Value, definitionTypeRef int, expectedTypeName []byte) bool {
-	variableDefinitionRef, _, actualTypeName, ok := v.operationVariableType(value.Ref)
-	if !ok {
-		v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-		return false
-	}
-
-	if v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) {
-		return v.valueSatisfiesInputValueDefinitionType(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue.Value, definitionTypeRef)
-	}
-
-	if !bytes.Equal(actualTypeName, expectedTypeName) {
-		v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-		return false
-	}
-
-	return true
-}
-
 func (v *valuesVisitor) handleTypeError(value ast.Value, definitionTypeRef int) {
 	printedValue, printedType, ok := v.printValueAndUnderlyingType(value, definitionTypeRef)
 	if !ok {
@@ -588,11 +571,16 @@ func (v *valuesVisitor) handleVariableHasIncompatibleTypeError(value ast.Value,
 		return
 	}
 
-	variableDefinitionRef, _, actualTypeName, ok := v.operationVariableType(value.Ref)
+	variableDefinitionRef, variableTypeRef, _, ok := v.operationVariableType(value.Ref)
 	if !ok {
 		return
 	}
 
+	actualTypeName, err := v.operation.PrintTypeBytes(variableTypeRef, nil)
+	if v.HandleInternalErr(err) {
+		return
+	}
+
 	v.Report.AddExternalError(operationreport.ErrVariableTypeDoesntSatisfyInputValueDefinition(
 		printedValue,
 		actualTypeName,
diff --git a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/pkg/astvalidation/operation_validation.go b/app/pkg/astvalidation/operation_validation.go
index 0057127..6293024 100644
--- a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/pkg/astvalidation/operation_validation.go
+++ b/app/pkg/astvalidation/operation_validation.go
@@ -23,7 +23,6 @@ func DefaultOperationValidator() *OperationValidator {
 	validator.RegisterRule(FieldSelections())
 	validator.RegisterRule(FieldSelectionMerging())
 	validator.RegisterRule(KnownArguments())
-	validator.RegisterRule(ValidArguments())
 	validator.RegisterRule(Values())
 	validator.RegisterRule(ArgumentUniqueness())
 	validator.RegisterRule(RequiredArguments())
diff --git a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/v2/pkg/astvalidation/operation_rule_valid_arguments.go b/app/v2/pkg/astvalidation/operation_rule_valid_arguments.go
index 0608211..086810b 100644
--- a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/v2/pkg/astvalidation/operation_rule_valid_arguments.go
+++ b/app/v2/pkg/astvalidation/operation_rule_valid_arguments.go
@@ -1,184 +1,7 @@
 package astvalidation
 
-import (
-	"bytes"
-	"fmt"
-
-	"github.com/wundergraph/graphql-go-tools/v2/pkg/ast"
-	"github.com/wundergraph/graphql-go-tools/v2/pkg/astvisitor"
-	"github.com/wundergraph/graphql-go-tools/v2/pkg/operationreport"
-)
-
-// ValidArguments validates if arguments are valid: values and variables has compatible types
-// deep variables comparison is handled by Values
+// ValidArguments validates if arguments are valid: values and variables have compatible types.
+// This rule now reuses the Values rule to avoid duplicated logic.
 func ValidArguments() Rule {
-	return func(walker *astvisitor.Walker) {
-		visitor := validArgumentsVisitor{
-			Walker: walker,
-		}
-		walker.RegisterEnterDocumentVisitor(&visitor)
-		walker.RegisterEnterArgumentVisitor(&visitor)
-	}
-}
-
-type validArgumentsVisitor struct {
-	*astvisitor.Walker
-	operation, definition *ast.Document
-}
-
-func (v *validArgumentsVisitor) EnterDocument(operation, definition *ast.Document) {
-	v.operation = operation
-	v.definition = definition
-}
-
-func (v *validArgumentsVisitor) EnterArgument(ref int) {
-	definitionRef, exists := v.ArgumentInputValueDefinition(ref)
-
-	if !exists {
-		return
-	}
-
-	value := v.operation.ArgumentValue(ref)
-	v.validateIfValueSatisfiesInputFieldDefinition(value, definitionRef)
-}
-
-func (v *validArgumentsVisitor) validateIfValueSatisfiesInputFieldDefinition(value ast.Value, inputValueDefinitionRef int) {
-	var (
-		satisfied             bool
-		operationTypeRef      int
-		variableDefinitionRef int
-	)
-
-	switch value.Kind {
-	case ast.ValueKindVariable:
-		satisfied, operationTypeRef, variableDefinitionRef = v.variableValueSatisfiesInputValueDefinition(value.Ref, inputValueDefinitionRef)
-	case ast.ValueKindEnum,
-		ast.ValueKindNull,
-		ast.ValueKindBoolean,
-		ast.ValueKindInteger,
-		ast.ValueKindString,
-		ast.ValueKindFloat,
-		ast.ValueKindObject,
-		ast.ValueKindList:
-		// this types of values are covered by Values() / valuesVisitor
-		return
-	default:
-		v.StopWithInternalErr(fmt.Errorf("validateIfValueSatisfiesInputFieldDefinition: not implemented for value.Kind: %s", value.Kind))
-		return
-	}
-
-	if satisfied {
-		return
-	}
-
-	if operationTypeRef == ast.InvalidRef {
-		// variable is not defined
-		return
-	}
-
-	printedValue, err := v.operation.PrintValueBytes(value, nil)
-	if v.HandleInternalErr(err) {
-		return
-	}
-
-	typeRef := v.definition.InputValueDefinitionType(inputValueDefinitionRef)
-	expectedTypeName, err := v.definition.PrintTypeBytes(typeRef, nil)
-	if v.HandleInternalErr(err) {
-		return
-	}
-
-	actualTypeName, err := v.operation.PrintTypeBytes(operationTypeRef, nil)
-	if v.HandleInternalErr(err) {
-		return
-	}
-
-	v.StopWithExternalErr(operationreport.ErrVariableTypeDoesntSatisfyInputValueDefinition(printedValue, actualTypeName, expectedTypeName, value.Position, v.operation.VariableDefinitions[variableDefinitionRef].VariableValue.Position))
-}
-
-func (v *validArgumentsVisitor) variableValueSatisfiesInputValueDefinition(variableValue, inputValueDefinition int) (satisfies bool, operationTypeRef int, variableDefRef int) {
-	variableDefinitionRef, exists := v.variableDefinition(variableValue)
-	if !exists {
-		return false, ast.InvalidRef, variableDefinitionRef
-	}
-
-	operationTypeRef = v.operation.VariableDefinitions[variableDefinitionRef].Type
-	definitionTypeRef := v.definition.InputValueDefinitions[inputValueDefinition].Type
-
-	hasDefaultValue := v.validDefaultValue(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue) ||
-		v.validDefaultValue(v.definition.InputValueDefinitions[inputValueDefinition].DefaultValue)
-
-	return v.operationTypeSatisfiesDefinitionType(operationTypeRef, definitionTypeRef, hasDefaultValue), operationTypeRef, variableDefinitionRef
-}
-
-func (v *validArgumentsVisitor) variableDefinition(variableValueRef int) (ref int, exists bool) {
-	variableName := v.operation.VariableValueNameBytes(variableValueRef)
-
-	if v.Ancestors[0].Kind == ast.NodeKindOperationDefinition {
-		return v.operation.VariableDefinitionByNameAndOperation(v.Ancestors[0].Ref, variableName)
-	}
-
-	for opDefRef := 0; opDefRef < len(v.operation.OperationDefinitions); opDefRef++ {
-		ref, exists = v.operation.VariableDefinitionByNameAndOperation(opDefRef, variableName)
-		if exists {
-			return
-		}
-	}
-
-	return ast.InvalidRef, false
-}
-
-func (v *validArgumentsVisitor) validDefaultValue(value ast.DefaultValue) bool {
-	return value.IsDefined && value.Value.Kind != ast.ValueKindNull
-}
-
-func (v *validArgumentsVisitor) operationTypeSatisfiesDefinitionType(operationTypeRef int, definitionTypeRef int, hasDefaultValue bool) bool {
-	opKind := v.operation.Types[operationTypeRef].TypeKind
-	defKind := v.definition.Types[definitionTypeRef].TypeKind
-
-	// A nullable op type is compatible with a non-null def type if the def has
-	// a default value. Strip the def non-null and continue comparing. This
-	// logic is only valid before any unnesting of types occurs, which is why
-	// it's outside the for loop below.
-	//
-	// Example:
-	// Op:  someField(arg: Boolean): String
-	// Def: someField(arg: Boolean! = false): String  #  Boolean! -> Boolean
-	if opKind != ast.TypeKindNonNull && defKind == ast.TypeKindNonNull && hasDefaultValue {
-		definitionTypeRef = v.definition.Types[definitionTypeRef].OfType
-	}
-
-	// Unnest the op and def arg types until a named type is reached,
-	// then compare.
-	for {
-		if operationTypeRef == -1 || definitionTypeRef == -1 {
-			return false
-		}
-		opKind = v.operation.Types[operationTypeRef].TypeKind
-		defKind = v.definition.Types[definitionTypeRef].TypeKind
-
-		// If the op arg type is stricter than the def arg type, that's okay.
-		// Strip the op non-null and continue comparing.
-		//
-		// Example:
-		// Op:  someField(arg: Boolean!): String  # Boolean! -> Boolean
-		// Def: someField(arg: Boolean): String
-		if opKind == ast.TypeKindNonNull && defKind != ast.TypeKindNonNull {
-			operationTypeRef = v.operation.Types[operationTypeRef].OfType
-			continue
-		}
-
-		if opKind != defKind {
-			return false
-		}
-		if opKind == ast.TypeKindNamed {
-			// defKind is also a named type because at this point both kinds
-			// are the same! Compare the names.
-
-			return bytes.Equal(v.operation.Input.ByteSlice(v.operation.Types[operationTypeRef].Name),
-				v.definition.Input.ByteSlice(v.definition.Types[definitionTypeRef].Name))
-		}
-		// Both types are non-null or list. Unnest and continue comparing.
-		operationTypeRef = v.operation.Types[operationTypeRef].OfType
-		definitionTypeRef = v.definition.Types[definitionTypeRef].OfType
-	}
+	return Values()
 }
diff --git a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/v2/pkg/astvalidation/operation_rule_values.go b/app/v2/pkg/astvalidation/operation_rule_values.go
index 3b6d7b5..2b91c15 100644
--- a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/v2/pkg/astvalidation/operation_rule_values.go
+++ b/app/v2/pkg/astvalidation/operation_rule_values.go
@@ -53,19 +53,15 @@ func (v *valuesVisitor) EnterArgument(ref int) {
 	value := v.operation.ArgumentValue(ref)
 	if value.Kind == ast.ValueKindVariable {
 		variableName := v.operation.VariableValueNameBytes(value.Ref)
-		variableDefinition, exists := v.operation.VariableDefinitionByNameAndOperation(v.Ancestors[0].Ref, variableName)
+		_, exists := v.operation.VariableDefinitionByNameAndOperation(v.Ancestors[0].Ref, variableName)
 		if !exists {
 			operationName := v.operation.OperationDefinitionNameBytes(v.Ancestors[0].Ref)
 			v.StopWithExternalErr(operationreport.ErrVariableNotDefinedOnOperation(variableName, operationName))
 			return
 		}
-		if !v.operation.VariableDefinitions[variableDefinition].DefaultValue.IsDefined {
-			return // variable has no default value, deep type check not required
-		}
-		value = v.operation.VariableDefinitions[variableDefinition].DefaultValue.Value
 	}
 
-	v.valueSatisfiesInputValueDefinitionType(value, v.definition.InputValueDefinitions[definition].Type)
+	v.valueSatisfiesInputValueDefinitionType(value, v.definition.InputValueDefinitions[definition].Type, definition)
 }
 
 func (v *valuesVisitor) valueSatisfiesOperationType(value ast.Value, operationTypeRef int) bool {
@@ -153,7 +149,10 @@ func (v *valuesVisitor) valueSatisfiesOperationListType(value ast.Value, operati
 	return valid
 }
 
-func (v *valuesVisitor) valueSatisfiesInputValueDefinitionType(value ast.Value, definitionTypeRef int) bool {
+func (v *valuesVisitor) valueSatisfiesInputValueDefinitionType(value ast.Value, definitionTypeRef int, inputValueDefinitionRef int) bool {
+	if value.Kind == ast.ValueKindVariable {
+		return v.variableValueSatisfiesInputValueDefinitionType(value, definitionTypeRef, inputValueDefinitionRef)
+	}
 	switch v.definition.Types[definitionTypeRef].TypeKind {
 	case ast.TypeKindNonNull:
 		return v.valuesSatisfiesNonNullType(value, definitionTypeRef)
@@ -168,29 +167,11 @@ func (v *valuesVisitor) valueSatisfiesInputValueDefinitionType(value ast.Value,
 }
 
 func (v *valuesVisitor) valuesSatisfiesNonNullType(value ast.Value, definitionTypeRef int) bool {
-	switch value.Kind {
-	case ast.ValueKindNull:
+	if value.Kind == ast.ValueKindNull {
 		v.handleUnexpectedNullError(value, definitionTypeRef)
 		return false
-	case ast.ValueKindVariable:
-		variableDefinitionRef, variableTypeRef, _, ok := v.operationVariableType(value.Ref)
-		if !ok {
-			v.handleTypeError(value, definitionTypeRef)
-			return false
-		}
-
-		if v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) {
-			return v.valueSatisfiesInputValueDefinitionType(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue.Value, definitionTypeRef)
-		}
-
-		importedDefinitionType := v.importer.ImportType(definitionTypeRef, v.definition, v.operation)
-		if !v.operation.TypesAreEqualDeep(importedDefinitionType, variableTypeRef) {
-			v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-			return false
-		}
-		return true
 	}
-	return v.valueSatisfiesInputValueDefinitionType(value, v.definition.Types[definitionTypeRef].OfType)
+	return v.valueSatisfiesInputValueDefinitionType(value, v.definition.Types[definitionTypeRef].OfType, ast.InvalidRef)
 }
 
 func (v *valuesVisitor) valuesSatisfiesNamedType(value ast.Value, definitionTypeRef int) bool {
@@ -211,33 +192,12 @@ func (v *valuesVisitor) valuesSatisfiesNamedType(value ast.Value, definitionType
 
 func (v *valuesVisitor) valueSatisfiesListType(value ast.Value, definitionTypeRef int, listItemType int) bool {
 
-	if value.Kind == ast.ValueKindVariable {
-		variableDefinitionRef, actualType, _, ok := v.operationVariableType(value.Ref)
-		if !ok {
-			v.handleTypeError(value, definitionTypeRef)
-			return false
-		}
-
-		if v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) {
-			return v.valueSatisfiesInputValueDefinitionType(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue.Value, definitionTypeRef)
-		}
-
-		expectedType := v.importer.ImportType(listItemType, v.definition, v.operation)
-		actualType = v.operation.ResolveUnderlyingType(actualType)
-
-		if !v.operation.TypesAreEqualDeep(expectedType, actualType) {
-			v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-			return false
-		}
-		return true
-	}
-
 	if value.Kind == ast.ValueKindNull {
 		return true
 	}
 
 	if value.Kind != ast.ValueKindList {
-		return v.valueSatisfiesInputValueDefinitionType(value, listItemType)
+		return v.valueSatisfiesInputValueDefinitionType(value, listItemType, ast.InvalidRef)
 	}
 
 	if v.definition.Types[listItemType].TypeKind == ast.TypeKindNonNull {
@@ -252,7 +212,7 @@ func (v *valuesVisitor) valueSatisfiesListType(value ast.Value, definitionTypeRe
 
 	for _, i := range v.operation.ListValues[value.Ref].Refs {
 		listValue := v.operation.Value(i)
-		if !v.valueSatisfiesInputValueDefinitionType(listValue, listItemType) {
+		if !v.valueSatisfiesInputValueDefinitionType(listValue, listItemType, ast.InvalidRef) {
 			valid = false
 		}
 	}
@@ -260,6 +220,66 @@ func (v *valuesVisitor) valueSatisfiesListType(value ast.Value, definitionTypeRe
 	return valid
 }
 
+func (v *valuesVisitor) variableValueSatisfiesInputValueDefinitionType(value ast.Value, definitionTypeRef int, inputValueDefinitionRef int) bool {
+	variableDefinitionRef, variableTypeRef, _, ok := v.operationVariableType(value.Ref)
+	if !ok {
+		v.handleTypeError(value, definitionTypeRef)
+		return false
+	}
+
+	expectedType := v.importer.ImportType(definitionTypeRef, v.definition, v.operation)
+	hasDefaultValue := v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) ||
+		v.inputValueDefinitionHasValidDefaultValue(inputValueDefinitionRef)
+
+	if !v.operationTypeSatisfiesDefinitionType(variableTypeRef, expectedType, hasDefaultValue) {
+		v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
+		return false
+	}
+
+	return true
+}
+
+func (v *valuesVisitor) operationTypeSatisfiesDefinitionType(operationTypeRef int, definitionTypeRef int, hasDefaultValue bool) bool {
+	opKind := v.operation.Types[operationTypeRef].TypeKind
+	defKind := v.operation.Types[definitionTypeRef].TypeKind
+
+	if opKind != ast.TypeKindNonNull && defKind == ast.TypeKindNonNull && hasDefaultValue {
+		definitionTypeRef = v.operation.Types[definitionTypeRef].OfType
+	}
+
+	for {
+		if operationTypeRef == ast.InvalidRef || definitionTypeRef == ast.InvalidRef {
+			return false
+		}
+		opKind = v.operation.Types[operationTypeRef].TypeKind
+		defKind = v.operation.Types[definitionTypeRef].TypeKind
+
+		if opKind == ast.TypeKindNonNull && defKind != ast.TypeKindNonNull {
+			operationTypeRef = v.operation.Types[operationTypeRef].OfType
+			continue
+		}
+
+		if opKind != defKind {
+			return false
+		}
+		if opKind == ast.TypeKindNamed {
+			return bytes.Equal(v.operation.Input.ByteSlice(v.operation.Types[operationTypeRef].Name),
+				v.operation.Input.ByteSlice(v.operation.Types[definitionTypeRef].Name))
+		}
+
+		operationTypeRef = v.operation.Types[operationTypeRef].OfType
+		definitionTypeRef = v.operation.Types[definitionTypeRef].OfType
+	}
+}
+
+func (v *valuesVisitor) inputValueDefinitionHasValidDefaultValue(ref int) bool {
+	if ref == ast.InvalidRef {
+		return false
+	}
+	defaultValue := v.definition.InputValueDefinitions[ref].DefaultValue
+	return defaultValue.IsDefined && defaultValue.Value.Kind != ast.ValueKindNull
+}
+
 func (v *valuesVisitor) valueSatisfiesTypeDefinitionNode(value ast.Value, definitionTypeRef int, node ast.Node) bool {
 	switch node.Kind {
 	case ast.NodeKindEnumTypeDefinition:
@@ -273,11 +293,6 @@ func (v *valuesVisitor) valueSatisfiesTypeDefinitionNode(value ast.Value, defini
 }
 
 func (v *valuesVisitor) valueSatisfiesEnum(value ast.Value, definitionTypeRef int, node ast.Node) bool {
-	if value.Kind == ast.ValueKindVariable {
-		expectedTypeName := node.NameBytes(v.definition)
-		return v.variableValueHasMatchingTypeName(value, definitionTypeRef, expectedTypeName)
-	}
-
 	if value.Kind != ast.ValueKindEnum {
 		v.handleUnexpectedEnumValueError(value, definitionTypeRef)
 		return false
@@ -296,10 +311,6 @@ func (v *valuesVisitor) valueSatisfiesEnum(value ast.Value, definitionTypeRef in
 func (v *valuesVisitor) valueSatisfiesScalar(value ast.Value, definitionTypeRef int, scalar int) bool {
 	scalarName := v.definition.ScalarTypeDefinitionNameBytes(scalar)
 
-	if value.Kind == ast.ValueKindVariable {
-		return v.variableValueHasMatchingTypeName(value, definitionTypeRef, scalarName)
-	}
-
 	switch {
 	case bytes.Equal(scalarName, literal.ID):
 		return v.valueSatisfiesScalarID(value, definitionTypeRef)
@@ -407,11 +418,6 @@ func (v *valuesVisitor) valueSatisfiesScalarString(value ast.Value, definitionTy
 }
 
 func (v *valuesVisitor) valueSatisfiesInputObjectTypeDefinition(value ast.Value, definitionTypeRef int, inputObjectTypeDefinition int) bool {
-	if value.Kind == ast.ValueKindVariable {
-		expectedTypeName := v.definition.InputObjectTypeDefinitionNameBytes(inputObjectTypeDefinition)
-		return v.variableValueHasMatchingTypeName(value, definitionTypeRef, expectedTypeName)
-	}
-
 	if value.Kind != ast.ValueKindObject {
 		v.handleNotObjectTypeError(value, definitionTypeRef)
 		return false
@@ -499,7 +505,7 @@ func (v *valuesVisitor) objectValueSatisfiesInputValueDefinition(objectValue ast
 	for _, i := range v.operation.ObjectValues[objectValue.Ref].Refs {
 		if bytes.Equal(name, v.operation.ObjectFieldNameBytes(i)) {
 			value := v.operation.ObjectFieldValue(i)
-			return v.valueSatisfiesInputValueDefinitionType(value, definitionTypeRef)
+			return v.valueSatisfiesInputValueDefinitionType(value, definitionTypeRef, inputValueDefinition)
 		}
 	}
 
@@ -512,25 +518,6 @@ func (v *valuesVisitor) objectValueSatisfiesInputValueDefinition(objectValue ast
 	return true
 }
 
-func (v *valuesVisitor) variableValueHasMatchingTypeName(value ast.Value, definitionTypeRef int, expectedTypeName []byte) bool {
-	variableDefinitionRef, _, actualTypeName, ok := v.operationVariableType(value.Ref)
-	if !ok {
-		v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-		return false
-	}
-
-	if v.operation.VariableDefinitionHasDefaultValue(variableDefinitionRef) {
-		return v.valueSatisfiesInputValueDefinitionType(v.operation.VariableDefinitions[variableDefinitionRef].DefaultValue.Value, definitionTypeRef)
-	}
-
-	if !bytes.Equal(actualTypeName, expectedTypeName) {
-		v.handleVariableHasIncompatibleTypeError(value, definitionTypeRef)
-		return false
-	}
-
-	return true
-}
-
 func (v *valuesVisitor) handleTypeError(value ast.Value, definitionTypeRef int) {
 	printedValue, printedType, ok := v.printValueAndUnderlyingType(value, definitionTypeRef)
 	if !ok {
@@ -587,11 +574,16 @@ func (v *valuesVisitor) handleVariableHasIncompatibleTypeError(value ast.Value,
 		return
 	}
 
-	variableDefinitionRef, _, actualTypeName, ok := v.operationVariableType(value.Ref)
+	variableDefinitionRef, variableTypeRef, _, ok := v.operationVariableType(value.Ref)
 	if !ok {
 		return
 	}
 
+	actualTypeName, err := v.operation.PrintTypeBytes(variableTypeRef, nil)
+	if v.HandleInternalErr(err) {
+		return
+	}
+
 	v.Report.AddExternalError(operationreport.ErrVariableTypeDoesntSatisfyInputValueDefinition(
 		printedValue,
 		actualTypeName,
diff --git a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/v2/pkg/astvalidation/operation_validation.go b/app/v2/pkg/astvalidation/operation_validation.go
index fa1546c..b33c80b 100644
--- a/tmp/agent-patch-flux-pr-1099.1-of-1.2026-02-28__13-38-10__gpt-5-1-codex-mini/app/v2/pkg/astvalidation/operation_validation.go
+++ b/app/v2/pkg/astvalidation/operation_validation.go
@@ -39,7 +39,6 @@ func DefaultOperationValidator(options ...Option) *OperationValidator {
 	validator.RegisterRule(FieldSelections(opts))
 	validator.RegisterRule(FieldSelectionMerging())
 	validator.RegisterRule(KnownArguments())
-	validator.RegisterRule(ValidArguments())
 	validator.RegisterRule(Values())
 	validator.RegisterRule(ArgumentUniqueness())
 	validator.RegisterRule(RequiredArguments())