diff --git a/chain/consts.go b/chain/consts.go
index 816ef9f307..4dba91a246 100644
--- a/chain/consts.go
+++ b/chain/consts.go
@@ -6,8 +6,6 @@ package chain
 import (
 	"time"
 
-	"github.com/ava-labs/avalanchego/utils/units"
-
 	"github.com/ava-labs/hypersdk/keys"
 )
 
diff --git a/chain/transaction.go b/chain/transaction.go
index a281b75d4c..c6ff3b4488 100644
--- a/chain/transaction.go
+++ b/chain/transaction.go
@@ -308,7 +308,7 @@ func (t *Transaction) Execute(
 		// are set when this function is defined. If any of them are
 		// modified later, they will not be used here.
 		ts.Rollback(ctx, actionStart)
-		return &Result{false, utils.ErrBytes(rerr), maxUnits, maxFee, nil}, nil
+		return &Result{false, utils.ErrBytes(rerr), maxUnits, maxFee}, nil
 	}
 	success, actionCUs, output, err := t.Action.Execute(ctx, r, ts, timestamp, t.Auth.Actor(), t.id)
 	if err != nil {
diff --git a/codec/type_parser.go b/codec/type_parser.go
index 0614c7b151..74f975cfec 100644
--- a/codec/type_parser.go
+++ b/codec/type_parser.go
@@ -7,42 +7,42 @@ import (
 	"github.com/ava-labs/hypersdk/consts"
 )
 
-type decoder[T any, X any, Y any] struct {
-	f func(*Packer, X) (T, error)
+type decoder[T any, Y any] struct {
+	f func(*Packer) (T, error)
 	y Y
 }
 
 // The number of types is limited to 255.
-type TypeParser[T any, X any, Y any] struct {
+type TypeParser[T any, Y any] struct {
 	typeToIndex    map[string]uint8
-	indexToDecoder map[uint8]*decoder[T, X, Y]
+	indexToDecoder map[uint8]*decoder[T, Y]
 }
 
 // NewTypeParser returns an instance of a Typeparser with generic type [T].
-func NewTypeParser[T any, X any, Y bool]() *TypeParser[T, X, Y] {
-	return &TypeParser[T, X, Y]{
+func NewTypeParser[T any, Y bool]() *TypeParser[T, Y] {
+	return &TypeParser[T, Y]{
 		typeToIndex:    map[string]uint8{},
-		indexToDecoder: map[uint8]*decoder[T, X, Y]{},
+		indexToDecoder: map[uint8]*decoder[T, Y]{},
 	}
 }
 
 // Register registers a new type into TypeParser [p]. Registers the type by using
 // the string representation of [o], and sets the decoder of that index to [f].
 // Returns an error if [o] has already been registered or the TypeParser is full.
-func (p *TypeParser[T, X, Y]) Register(id uint8, f func(*Packer, X) (T, error), y Y) error {
+func (p *TypeParser[T, Y]) Register(id uint8, f func(*Packer) (T, error), y Y) error {
 	if len(p.indexToDecoder) == int(consts.MaxUint8)+1 {
 		return ErrTooManyItems
 	}
 	if _, ok := p.indexToDecoder[id]; ok {
 		return ErrDuplicateItem
 	}
-	p.indexToDecoder[id] = &decoder[T, X, Y]{f, y}
+	p.indexToDecoder[id] = &decoder[T, Y]{f, y}
 	return nil
 }
 
 // LookupIndex returns the decoder function and success of lookup of [index]
 // from Typeparser [p].
-func (p *TypeParser[T, X, Y]) LookupIndex(index uint8) (func(*Packer, X) (T, error), Y, bool) {
+func (p *TypeParser[T, Y]) LookupIndex(index uint8) (func(*Packer) (T, error), Y, bool) {
 	d, ok := p.indexToDecoder[index]
 	if ok {
 		return d.f, d.y, true
diff --git a/codec/type_parser_test.go b/codec/type_parser_test.go
index 76f6b04ad7..1cbb71b4fa 100644
--- a/codec/type_parser_test.go
+++ b/codec/type_parser_test.go
@@ -34,7 +34,7 @@ func (*Blah3) Bark() string { return "blah3" }
 func (*Blah3) GetTypeID() uint8 { return 2 }
 
 func TestTypeParser(t *testing.T) {
-	tp := NewTypeParser[Blah, any, bool]()
+	tp := NewTypeParser[Blah, bool]()
 
 	t.Run("empty parser", func(t *testing.T) {
 		require := require.New(t)
@@ -54,14 +54,14 @@ func TestTypeParser(t *testing.T) {
 		require.NoError(
 			tp.Register(
 				blah1.GetTypeID(),
-				func(*Packer, any) (Blah, error) { return nil, errBlah1 },
+				func(*Packer) (Blah, error) { return nil, errBlah1 },
 				true,
 			),
 		)
 		require.NoError(
 			tp.Register(
 				blah2.GetTypeID(),
-				func(*Packer, any) (Blah, error) { return nil, errBlah2 },
+				func(*Packer) (Blah, error) { return nil, errBlah2 },
 				false,
 			),
 		)
@@ -69,14 +69,14 @@ func TestTypeParser(t *testing.T) {
 		f, b, ok := tp.LookupIndex(blah1.GetTypeID())
 		require.True(ok)
 		require.True(b)
-		res, err := f(nil, nil)
+		res, err := f(nil)
 		require.Nil(res)
 		require.ErrorIs(err, errBlah1)
 
 		f, b, ok = tp.LookupIndex(blah2.GetTypeID())
 		require.True(ok)
 		require.False(b)
-		res, err = f(nil, nil)
+		res, err = f(nil)
 		require.Nil(res)
 		require.ErrorIs(err, errBlah2)
 	})
diff --git a/examples/tokenvm/actions/burn_asset.go b/examples/tokenvm/actions/burn_asset.go
index 8eb18e6bab..bffc8290fb 100644
--- a/examples/tokenvm/actions/burn_asset.go
+++ b/examples/tokenvm/actions/burn_asset.go
@@ -52,26 +52,26 @@ func (b *BurnAsset) Execute(
 	_ bool,
 ) (bool, uint64, []byte, error) {
 	if b.Value == 0 {
-		return false, BurnComputeUnits, OutputValueZero, nil, nil
+		return false, BurnComputeUnits, OutputValueZero, nil
 	}
 	if err := storage.SubBalance(ctx, mu, actor, b.Asset, b.Value); err != nil {
-		return false, BurnComputeUnits, utils.ErrBytes(err), nil, nil
+		return false, BurnComputeUnits, utils.ErrBytes(err), nil
 	}
 	exists, symbol, decimals, metadata, supply, owner, err := storage.GetAsset(ctx, mu, b.Asset)
 	if err != nil {
-		return false, BurnComputeUnits, utils.ErrBytes(err), nil, nil
+		return false, BurnComputeUnits, utils.ErrBytes(err), nil
 	}
 	if !exists {
-		return false, BurnComputeUnits, OutputAssetMissing, nil, nil
+		return false, BurnComputeUnits, OutputAssetMissing, nil
 	}
 	newSupply, err := smath.Sub(supply, b.Value)
 	if err != nil {
-		return false, BurnComputeUnits, utils.ErrBytes(err), nil, nil
+		return false, BurnComputeUnits, utils.ErrBytes(err), nil
 	}
 	if err := storage.SetAsset(ctx, mu, b.Asset, symbol, decimals, metadata, newSupply, owner); err != nil {
-		return false, BurnComputeUnits, utils.ErrBytes(err), nil, nil
+		return false, BurnComputeUnits, utils.ErrBytes(err), nil
 	}
-	return true, BurnComputeUnits, nil, nil, nil
+	return true, BurnComputeUnits, nil, nil
 }
 
 func (*BurnAsset) MaxComputeUnits(chain.Rules) uint64 {