update amm virtual quotes reserves

README.md

@@ -100,7 +100,8 @@ Each `Swap` describes one protocol-level swap, liquidity, migration, or pool ope
 | `BaseMintDecimals` / `QuoteMintDecimals` | Decimals used to interpret raw token amounts. |
 | `User` | User or effective owner account for the action. If the parsed user is not on-curve, the parser may fall back to the transaction signer. |
 | `BaseAmount` / `QuoteAmount` | Actual parsed base-side and quote-side amounts, stored as `decimal.Decimal`. |
-| `BaseReserve` / `QuoteReserve` | Pool reserves when the protocol event or accounts expose them. |
+| `BaseReserve` / `QuoteReserve` | Pool reserves when the protocol event or accounts expose them. For Pump AMM buy/sell events, `QuoteReserve` is the post-trade effective quote reserve. |
+| `RealQuoteReserve` / `VirtualQuoteReserve` | Quote-reserve components. Pump AMM buy/sell events expose the post-trade real reserve and the signed virtual reserve separately. |
 | `UserBaseBalance` / `UserQuoteBalance` | User token balances after the transaction when available from token balance metadata. |
 | `AfterSOLBalance` | User or signer SOL balance after the transaction. |
 | `EntryContract` | Known router / entry contract account when detected. |
@@ -179,6 +180,7 @@ Parsed transaction binary:
 - `EncodeTxsBinary` / `DecodeTxsBinary` for a batch of parsed `Tx`.
 - `DecodeTxsBinaryReader` for streaming `PTXS` reads.
 - `MergeTxsBinaryBytes` and `MergeTxsBinarySourcesToWriter` for merging `PTXS` batches.
+- Schema v5 persists `RealQuoteReserve` and signed `VirtualQuoteReserve`; v3/v4 inputs remain readable and default these components to legacy `QuoteReserve` and zero.
 
 Raw transaction binary:
 

parser.go

@@ -268,10 +268,12 @@ func (tx *Tx) Parser() error {
 		lastReserve := make(map[solana.PublicKey]reserveSnapshot, len(tx.Swaps))
 		for _, swap := range tx.Swaps {
 			lastReserve[pairKey(swap)] = reserveSnapshot{
-				baseMint:     swap.BaseMint,
+				baseMint:            swap.BaseMint,
-				quoteMint:    swap.QuoteMint,
+				quoteMint:           swap.QuoteMint,
-				baseReserve:  swap.BaseReserve,
+				baseReserve:         swap.BaseReserve,
-				quoteReserve: swap.QuoteReserve,
+				quoteReserve:        swap.QuoteReserve,
+				realQuoteReserve:    swap.RealQuoteReserve,
+				virtualQuoteReserve: swap.VirtualQuoteReserve,
 			}
 		}
 
@@ -281,6 +283,8 @@ func (tx *Tx) Parser() error {
 				if tx.Swaps[i].BaseMint == v.baseMint && tx.Swaps[i].QuoteMint == v.quoteMint {
 					tx.Swaps[i].BaseReserve = v.baseReserve
 					tx.Swaps[i].QuoteReserve = v.quoteReserve
+					tx.Swaps[i].RealQuoteReserve = v.realQuoteReserve
+					tx.Swaps[i].VirtualQuoteReserve = v.virtualQuoteReserve
 				} else if tx.Swaps[i].BaseMint == v.quoteMint && tx.Swaps[i].QuoteMint == v.baseMint {
 					tx.Swaps[i].BaseReserve = v.quoteReserve
 					tx.Swaps[i].QuoteReserve = v.baseReserve
@@ -297,10 +301,12 @@ func (tx *Tx) Parser() error {
 }
 
 type reserveSnapshot struct {
-	baseMint     solana.PublicKey
+	baseMint            solana.PublicKey
-	quoteMint    solana.PublicKey
+	quoteMint           solana.PublicKey
-	baseReserve  decimal.Decimal
+	baseReserve         decimal.Decimal
-	quoteReserve decimal.Decimal
+	quoteReserve        decimal.Decimal
+	realQuoteReserve    decimal.Decimal
+	virtualQuoteReserve decimal.Decimal
 }
 
 func cloneSwapPrograms(src map[solana.PublicKey]swapParser) map[solana.PublicKey]swapParser {

pumpamm.go

@@ -9,7 +9,7 @@ import (
 	"github.com/shopspring/decimal"
 )
 
-type ammBuyEvent struct {
+type ammBuyEventPrefix struct {
 	TimeStamp              int64
 	BaseAmountOut          uint64
 	MaxQuoteAmountIn       uint64
@@ -45,6 +45,38 @@ type ammBuyEvent struct {
 	Cashback                         uint64
 }
 
+type ammBuyEvent struct {
+	ammBuyEventPrefix
+	BuybackFeeBasisPoints uint64
+	BuybackFee            uint64
+	VirtualQuoteReserves  agbinary.Int128
+	CanBoost              bool
+	BaseSupply            uint64
+}
+
+type ammTradeEventBuybackSuffix struct {
+	BuybackFeeBasisPoints uint64
+	BuybackFee            uint64
+}
+
+type ammTradeEventVirtualSuffix struct {
+	VirtualQuoteReserves agbinary.Int128
+	CanBoost             bool
+	BaseSupply           uint64
+}
+
+func decodeAmmBuyEvent(data []byte) (ammBuyEvent, error) {
+	var event ammBuyEvent
+	decoder := agbinary.NewBorshDecoder(data)
+	if err := decoder.Decode(&event.ammBuyEventPrefix); err != nil {
+		return ammBuyEvent{}, err
+	}
+	if err := decodeAmmTradeEventSuffix(decoder, &event.BuybackFeeBasisPoints, &event.BuybackFee, &event.VirtualQuoteReserves, &event.CanBoost, &event.BaseSupply); err != nil {
+		return ammBuyEvent{}, err
+	}
+	return event, nil
+}
+
 type ammCreatePoolEvent struct {
 	TimeStamp         int64
 	Index             uint16
@@ -90,7 +122,7 @@ type ammDepositEvent struct {
 	UserPoolTokenAccount  solana.PublicKey
 }
 
-type ammSellEvent struct {
+type ammSellEventPrefix struct {
 	Timestamp                  int64
 	BaseAmountIn               uint64
 	MinQuoteAmountOut          uint64
@@ -119,6 +151,86 @@ type ammSellEvent struct {
 	Cashback                         uint64
 }
 
+type ammSellEvent struct {
+	ammSellEventPrefix
+	BuybackFeeBasisPoints uint64
+	BuybackFee            uint64
+	VirtualQuoteReserves  agbinary.Int128
+	CanBoost              bool
+	BaseSupply            uint64
+}
+
+func decodeAmmSellEvent(data []byte) (ammSellEvent, error) {
+	var event ammSellEvent
+	decoder := agbinary.NewBorshDecoder(data)
+	if err := decoder.Decode(&event.ammSellEventPrefix); err != nil {
+		return ammSellEvent{}, err
+	}
+	if err := decodeAmmTradeEventSuffix(decoder, &event.BuybackFeeBasisPoints, &event.BuybackFee, &event.VirtualQuoteReserves, &event.CanBoost, &event.BaseSupply); err != nil {
+		return ammSellEvent{}, err
+	}
+	return event, nil
+}
+
+func decodeAmmTradeEventSuffix(
+	decoder *agbinary.Decoder,
+	buybackFeeBasisPoints *uint64,
+	buybackFee *uint64,
+	virtualQuoteReserves *agbinary.Int128,
+	canBoost *bool,
+	baseSupply *uint64,
+) error {
+	remaining := decoder.Remaining()
+	if remaining == 0 {
+		return nil
+	}
+	if remaining < 16 {
+		return fmt.Errorf("pump amm trade event buyback suffix truncated: %d bytes", remaining)
+	}
+
+	var buyback ammTradeEventBuybackSuffix
+	if err := decoder.Decode(&buyback); err != nil {
+		return err
+	}
+	*buybackFeeBasisPoints = buyback.BuybackFeeBasisPoints
+	*buybackFee = buyback.BuybackFee
+
+	remaining = decoder.Remaining()
+	if remaining == 0 {
+		return nil
+	}
+	if remaining < 25 {
+		return fmt.Errorf("pump amm trade event virtual reserve suffix truncated: %d bytes", remaining)
+	}
+
+	var virtual ammTradeEventVirtualSuffix
+	if err := decoder.Decode(&virtual); err != nil {
+		return err
+	}
+	*virtualQuoteReserves = virtual.VirtualQuoteReserves
+	*canBoost = virtual.CanBoost
+	*baseSupply = virtual.BaseSupply
+	return nil
+}
+
+func pumpAmmVirtualQuoteReserve(value agbinary.Int128) decimal.Decimal {
+	return decimal.NewFromBigInt(value.BigInt(), 0)
+}
+
+func pumpAmmBuyPostQuoteReserves(event ammBuyEvent) (real, effective decimal.Decimal) {
+	// The event reserve is the pre-trade real vault balance. Keep the
+	// parser's existing LP-fee treatment by applying QuoteAmountIn here.
+	real = decimal.NewFromUint64(event.PoolQuoteTokenReserve).Add(decimal.NewFromUint64(event.QuoteAmountIn))
+	return real, real.Add(pumpAmmVirtualQuoteReserve(event.VirtualQuoteReserves))
+}
+
+func pumpAmmSellPostQuoteReserves(event ammSellEvent) (real, effective decimal.Decimal) {
+	// The event reserve is the pre-trade real vault balance. Keep the
+	// parser's existing LP-fee treatment by applying QuoteAmountOut here.
+	real = decimal.NewFromUint64(event.PoolQuoteTokenReserves).Sub(decimal.NewFromUint64(event.QuoteAmountOut))
+	return real, real.Add(pumpAmmVirtualQuoteReserve(event.VirtualQuoteReserves))
+}
+
 type ammWithdrawEvent struct {
 	Timestamp              int64
 	LpTokenAmountIn        uint64
@@ -249,6 +361,7 @@ func ammCreatePoolParser(tx *Tx, instruction Instruction, innerInstructions Inne
 			QuoteAmount:       decimal.NewFromUint64(createEvent.QuoteAmountIn),
 			BaseReserve:       decimal.NewFromUint64(createEvent.PoolBaseAmount),
 			QuoteReserve:      decimal.NewFromUint64(createEvent.PoolQuoteAmount),
+			RealQuoteReserve:  decimal.NewFromUint64(createEvent.PoolQuoteAmount),
 			UserBaseBalance:   decimal.Decimal{},
 			UserQuoteBalance:  decimal.Decimal{},
 			EntryContract:     entryContract,
@@ -395,6 +508,7 @@ func failedTxAmmBuyParser(tx *Tx, instruction Instruction, innerInstructions Inn
 		QuoteAmount:       decimal.NewFromUint64(quoteAmount),
 		BaseReserve:       baseReserve,
 		QuoteReserve:      quoteReserve,
+		RealQuoteReserve:  quoteReserve,
 		Mayhem:            isMayhemPump(result.accountList[instruction.Accounts[9]]),
 		UserBaseBalance:   userBase,
 		UserQuoteBalance:  userQuote,
@@ -518,6 +632,7 @@ func failedTxAmmSellParser(tx *Tx, instruction Instruction, innerInstructions In
 		QuoteAmount:       decimal.NewFromUint64(quoteAmount),
 		BaseReserve:       baseReserve,
 		QuoteReserve:      quoteReserve,
+		RealQuoteReserve:  quoteReserve,
 		Mayhem:            isMayhemPump(result.accountList[instruction.Accounts[9]]),
 		UserBaseBalance:   userBase,
 		UserQuoteBalance:  userQuote,
@@ -557,7 +672,7 @@ func ammBuyParser(tx *Tx, instruction Instruction, innerInstructions InnerInstru
 		if innerInstr.ProgramIDIndex == instruction.ProgramIDIndex &&
 			bytes.Equal(innerInstr.Data[:8], pumpAmmEventDiscriminator[:]) &&
 			bytes.Equal(innerInstr.Data[8:16], pumpAmmBuyEventDiscriminator[:]) {
-			err = agbinary.NewBorshDecoder(innerInstr.Data[16:]).Decode(&event)
+			event, err = decodeAmmBuyEvent(innerInstr.Data[16:])
 			if offset[1] == 0 {
 				offset[0] += 1
 			} else {
@@ -632,27 +747,30 @@ func ammBuyParser(tx *Tx, instruction Instruction, innerInstructions InnerInstru
 	if event.IxName == "buy" {
 		quoteAmount = decimal.NewFromUint64(event.QuoteAmountIn)
 	}
+	realQuoteReserve, effectiveQuoteReserve := pumpAmmBuyPostQuoteReserves(event)
 	swap := Swap{
-		Program:           SolProgramPumpAMM,
+		Program:             SolProgramPumpAMM,
-		Event:             "buy",
+		Event:               "buy",
-		Pool:              event.Pool,
+		Pool:                event.Pool,
-		BaseMint:          baseMint,
+		BaseMint:            baseMint,
-		QuoteMint:         quoteMint,
+		QuoteMint:           quoteMint,
-		BaseTokenProgram:  baseTokenProgram,
+		BaseTokenProgram:    baseTokenProgram,
-		QuoteTokenProgram: quoteTokenProgram,
+		QuoteTokenProgram:   quoteTokenProgram,
-		Creator:           event.CoinCreator,
+		Creator:             event.CoinCreator,
-		BaseMintDecimals:  baseMintDecimals,
+		BaseMintDecimals:    baseMintDecimals,
-		QuoteMintDecimals: quoteMintDecimals,
+		QuoteMintDecimals:   quoteMintDecimals,
-		User:              eventUser,
+		User:                eventUser,
-		BaseAmount:        decimal.NewFromUint64(event.BaseAmountOut),
+		BaseAmount:          decimal.NewFromUint64(event.BaseAmountOut),
-		QuoteAmount:       quoteAmount,
+		QuoteAmount:         quoteAmount,
-		BaseReserve:       decimal.NewFromUint64(event.PoolBaseTokenReserve - event.BaseAmountOut),
+		BaseReserve:         decimal.NewFromUint64(event.PoolBaseTokenReserve - event.BaseAmountOut),
-		QuoteReserve:      decimal.NewFromUint64(event.PoolQuoteTokenReserve + event.QuoteAmountIn),
+		QuoteReserve:        effectiveQuoteReserve,
-		Mayhem:            isMayhemPump(result.accountList[instruction.Accounts[9]]),
+		RealQuoteReserve:    realQuoteReserve,
-		Cashback:          isCashbackCoin,
+		VirtualQuoteReserve: pumpAmmVirtualQuoteReserve(event.VirtualQuoteReserves),
-		UserBaseBalance:   userBase,
+		Mayhem:              isMayhemPump(result.accountList[instruction.Accounts[9]]),
-		UserQuoteBalance:  userQuote,
+		Cashback:            isCashbackCoin,
-		EntryContract:     entryContract,
+		UserBaseBalance:     userBase,
+		UserQuoteBalance:    userQuote,
+		EntryContract:       entryContract,
 	}
 	if bytes.Equal(instruction.Data[:8], pumpAmmBuyV2Discriminator[:]) {
 		swap.SetSwapAmountInfo(
@@ -699,7 +817,7 @@ func ammSellParser(tx *Tx, instruction Instruction, innerInstructions InnerInstr
 		if innerInstr.ProgramIDIndex == instruction.ProgramIDIndex &&
 			bytes.Equal(innerInstr.Data[:8], pumpAmmEventDiscriminator[:]) &&
 			bytes.Equal(innerInstr.Data[8:16], pumpAmmSellEventDiscriminator[:]) {
-			err = agbinary.NewBorshDecoder(innerInstr.Data[16:]).Decode(&event)
+			event, err = decodeAmmSellEvent(innerInstr.Data[16:])
 			if offset[1] == 0 {
 				offset[0] += 1
 			} else {
@@ -770,27 +888,30 @@ func ammSellParser(tx *Tx, instruction Instruction, innerInstructions InnerInstr
 		userQuote = userQuote.Add(decimal.NewFromUint64(userBalance))
 	}
 	isCashbackCoin := event.CashbackFeeBasisPoints > 0 || event.Cashback > 0
+	realQuoteReserve, effectiveQuoteReserve := pumpAmmSellPostQuoteReserves(event)
 	swap := Swap{
-		Program:           SolProgramPumpAMM,
+		Program:             SolProgramPumpAMM,
-		Event:             "sell",
+		Event:               "sell",
-		Pool:              event.Pool,
+		Pool:                event.Pool,
-		BaseMint:          baseMint,
+		BaseMint:            baseMint,
-		QuoteMint:         quoteMint,
+		QuoteMint:           quoteMint,
-		BaseTokenProgram:  baseTokenProgram,
+		BaseTokenProgram:    baseTokenProgram,
-		QuoteTokenProgram: quoteTokenProgram,
+		QuoteTokenProgram:   quoteTokenProgram,
-		Creator:           event.CoinCreator,
+		Creator:             event.CoinCreator,
-		BaseMintDecimals:  baseMintDecimals,
+		BaseMintDecimals:    baseMintDecimals,
-		QuoteMintDecimals: quoteMintDecimals,
+		QuoteMintDecimals:   quoteMintDecimals,
-		User:              eventUser,
+		User:                eventUser,
-		BaseAmount:        decimal.NewFromUint64(event.BaseAmountIn),
+		BaseAmount:          decimal.NewFromUint64(event.BaseAmountIn),
-		QuoteAmount:       decimal.NewFromUint64(event.UserQuoteAmountOut),
+		QuoteAmount:         decimal.NewFromUint64(event.UserQuoteAmountOut),
-		BaseReserve:       decimal.NewFromUint64(event.PoolBaseTokenReserves + event.BaseAmountIn),
+		BaseReserve:         decimal.NewFromUint64(event.PoolBaseTokenReserves + event.BaseAmountIn),
-		QuoteReserve:      decimal.NewFromUint64(event.PoolQuoteTokenReserves - event.QuoteAmountOut),
+		QuoteReserve:        effectiveQuoteReserve,
-		Mayhem:            isMayhemPump(result.accountList[instruction.Accounts[9]]),
+		RealQuoteReserve:    realQuoteReserve,
-		Cashback:          isCashbackCoin,
+		VirtualQuoteReserve: pumpAmmVirtualQuoteReserve(event.VirtualQuoteReserves),
-		UserBaseBalance:   userBase,
+		Mayhem:              isMayhemPump(result.accountList[instruction.Accounts[9]]),
-		UserQuoteBalance:  userQuote,
+		Cashback:            isCashbackCoin,
-		EntryContract:     entryContract,
+		UserBaseBalance:     userBase,
+		UserQuoteBalance:    userQuote,
+		EntryContract:       entryContract,
 	}
 	swap.SetSwapAmountInfo(
 		SwapModeExactIn,
@@ -893,6 +1014,7 @@ func depositParse(tx *Tx, instruction Instruction, innerInstructions InnerInstru
 			QuoteAmount:       decimal.NewFromUint64(event.QuoteAmountIn),
 			BaseReserve:       decimal.NewFromUint64(event.PoolBaseTokenReserves + event.BaseAmountIn),
 			QuoteReserve:      decimal.NewFromUint64(event.PoolQuoteTokenReserves + event.QuoteAmountIn),
+			RealQuoteReserve:  decimal.NewFromUint64(event.PoolQuoteTokenReserves + event.QuoteAmountIn),
 			//Mayhem:            false,
 			UserBaseBalance:  decimal.NewFromUint64(event.UserBaseTokenReserves - event.BaseAmountIn),
 			UserQuoteBalance: decimal.NewFromUint64(event.UserQuoteTokenReserves - event.QuoteAmountIn),
@@ -994,6 +1116,7 @@ func withdrawParse(tx *Tx, instruction Instruction, innerInstructions InnerInstr
 			QuoteAmount:       decimal.NewFromUint64(event.QuoteAmountOut),
 			BaseReserve:       decimal.NewFromUint64(event.PoolBaseTokenReserves - event.BaseAmountOut),
 			QuoteReserve:      decimal.NewFromUint64(event.PoolQuoteTokenReserves - event.QuoteAmountOut),
+			RealQuoteReserve:  decimal.NewFromUint64(event.PoolQuoteTokenReserves - event.QuoteAmountOut),
 			//Mayhem:            false,
 			UserBaseBalance:  decimal.NewFromUint64(event.UserBaseTokenReserves + event.BaseAmountOut),
 			UserQuoteBalance: decimal.NewFromUint64(event.UserQuoteTokenReserves + event.QuoteAmountOut),

pumpamm_test.go

@@ -1,11 +1,13 @@
 package pump_parser
 
 import (
+	"bytes"
 	"encoding/base64"
 	"fmt"
 
 	agbinary "github.com/gagliardetto/binary"
 	"github.com/gagliardetto/solana-go"
+	"github.com/mr-tron/base58"
 
 	"testing"
 )
@@ -40,3 +42,128 @@ func TestAmmBuyEvent(t *testing.T) {
 	fmt.Println(pumpAmmBuyEventDiscriminator)
 	fmt.Println(pumpGetFeesDiscriminator)
 }
+
+func TestDecodeAmmBuyEventSuffixCompatibility(t *testing.T) {
+	prefix := ammBuyEventPrefix{TimeStamp: 123, PoolQuoteTokenReserve: 456}
+
+	legacy, err := decodeAmmBuyEvent(encodeAmmEventParts(t, prefix))
+	if err != nil {
+		t.Fatalf("decodeAmmBuyEvent(legacy) error = %v", err)
+	}
+	if legacy.TimeStamp != prefix.TimeStamp || legacy.PoolQuoteTokenReserve != prefix.PoolQuoteTokenReserve {
+		t.Fatalf("legacy prefix mismatch: %+v", legacy.ammBuyEventPrefix)
+	}
+	if legacy.BuybackFeeBasisPoints != 0 || legacy.BuybackFee != 0 || legacy.CanBoost || legacy.BaseSupply != 0 || !pumpAmmVirtualQuoteReserve(legacy.VirtualQuoteReserves).IsZero() {
+		t.Fatalf("legacy suffix is not zero-valued: %+v", legacy)
+	}
+
+	buyback := ammTradeEventBuybackSuffix{BuybackFeeBasisPoints: 1000, BuybackFee: 77}
+	withBuyback, err := decodeAmmBuyEvent(encodeAmmEventParts(t, prefix, buyback))
+	if err != nil {
+		t.Fatalf("decodeAmmBuyEvent(buyback) error = %v", err)
+	}
+	if withBuyback.BuybackFeeBasisPoints != buyback.BuybackFeeBasisPoints || withBuyback.BuybackFee != buyback.BuybackFee {
+		t.Fatalf("buyback suffix mismatch: %+v", withBuyback)
+	}
+	if withBuyback.CanBoost || withBuyback.BaseSupply != 0 || !pumpAmmVirtualQuoteReserve(withBuyback.VirtualQuoteReserves).IsZero() {
+		t.Fatalf("pre-virtual suffix has unexpected virtual fields: %+v", withBuyback)
+	}
+
+	negativeVirtual := agbinary.Int128(agbinary.Uint128{Lo: ^uint64(122), Hi: ^uint64(0)})
+	virtual := ammTradeEventVirtualSuffix{
+		VirtualQuoteReserves: negativeVirtual,
+		CanBoost:             true,
+		BaseSupply:           1_000_000,
+	}
+	current, err := decodeAmmBuyEvent(encodeAmmEventParts(t, prefix, buyback, virtual))
+	if err != nil {
+		t.Fatalf("decodeAmmBuyEvent(current) error = %v", err)
+	}
+	if got := pumpAmmVirtualQuoteReserve(current.VirtualQuoteReserves).String(); got != "-123" {
+		t.Fatalf("VirtualQuoteReserves = %s, want -123", got)
+	}
+	if !current.CanBoost || current.BaseSupply != virtual.BaseSupply {
+		t.Fatalf("current suffix mismatch: %+v", current)
+	}
+}
+
+func TestDecodeAmmSellEventSuffixCompatibility(t *testing.T) {
+	prefix := ammSellEventPrefix{Timestamp: 321, PoolQuoteTokenReserves: 654, QuoteAmountOut: 54}
+	buyback := ammTradeEventBuybackSuffix{BuybackFeeBasisPoints: 900, BuybackFee: 88}
+	virtual := ammTradeEventVirtualSuffix{
+		VirtualQuoteReserves: agbinary.Int128(agbinary.Uint128{Lo: 987}),
+		CanBoost:             true,
+		BaseSupply:           2_000_000,
+	}
+
+	event, err := decodeAmmSellEvent(encodeAmmEventParts(t, prefix, buyback, virtual))
+	if err != nil {
+		t.Fatalf("decodeAmmSellEvent() error = %v", err)
+	}
+	if event.Timestamp != prefix.Timestamp || event.BuybackFee != buyback.BuybackFee || !event.CanBoost || event.BaseSupply != virtual.BaseSupply {
+		t.Fatalf("decoded sell event mismatch: %+v", event)
+	}
+	if got := pumpAmmVirtualQuoteReserve(event.VirtualQuoteReserves).String(); got != "987" {
+		t.Fatalf("VirtualQuoteReserves = %s, want 987", got)
+	}
+	real, effective := pumpAmmSellPostQuoteReserves(event)
+	if real.String() != "600" || effective.String() != "1587" {
+		t.Fatalf("post reserves = real %s effective %s", real, effective)
+	}
+}
+
+func TestDecodeAmmTradeEventRejectsTruncatedSuffix(t *testing.T) {
+	prefix := encodeAmmEventParts(t, ammBuyEventPrefix{})
+	for _, suffixLength := range []int{1, 15, 17, 40} {
+		data := append(append([]byte(nil), prefix...), make([]byte, suffixLength)...)
+		if _, err := decodeAmmBuyEvent(data); err == nil {
+			t.Fatalf("decodeAmmBuyEvent() error = nil for %d-byte suffix", suffixLength)
+		}
+	}
+}
+
+func TestDecodeAmmBuyEventDevnetVirtualReserve(t *testing.T) {
+	const eventDataBase58 = "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"
+	data, err := base58.Decode(eventDataBase58)
+	if err != nil {
+		t.Fatalf("base58.Decode() error = %v", err)
+	}
+	if len(data) < 16 || !bytes.Equal(data[:8], pumpAmmEventDiscriminator[:]) || !bytes.Equal(data[8:16], pumpAmmBuyEventDiscriminator[:]) {
+		t.Fatalf("unexpected event discriminator: len=%d", len(data))
+	}
+
+	event, err := decodeAmmBuyEvent(data[16:])
+	if err != nil {
+		t.Fatalf("decodeAmmBuyEvent(devnet) error = %v", err)
+	}
+	if event.TimeStamp != 1784271481 || event.PoolQuoteTokenReserve != 2_213_159_021 || event.QuoteAmountIn != 100_000_000 || event.QuoteAmountInWithLpFee != 98_785_184 {
+		t.Fatalf("devnet buy event core fields mismatch: %+v", event)
+	}
+	if event.BuybackFeeBasisPoints != 1000 || event.BuybackFee != 91_851 {
+		t.Fatalf("devnet buyback fields mismatch: bps=%d fee=%d", event.BuybackFeeBasisPoints, event.BuybackFee)
+	}
+	if got := pumpAmmVirtualQuoteReserve(event.VirtualQuoteReserves).String(); got != "583150126" {
+		t.Fatalf("VirtualQuoteReserves = %s, want 583150126", got)
+	}
+	if !event.CanBoost || event.BaseSupply != 1_000_000_000_000_000 {
+		t.Fatalf("devnet boost metadata mismatch: can_boost=%t base_supply=%d", event.CanBoost, event.BaseSupply)
+	}
+
+	real, effective := pumpAmmBuyPostQuoteReserves(event)
+	if real.String() != "2313159021" || effective.String() != "2896309147" {
+		t.Fatalf("post reserves = real %s effective %s", real, effective)
+	}
+}
+
+func encodeAmmEventParts(t *testing.T, parts ...any) []byte {
+	t.Helper()
+
+	var buf bytes.Buffer
+	encoder := agbinary.NewBorshEncoder(&buf)
+	for _, part := range parts {
+		if err := encoder.Encode(part); err != nil {
+			t.Fatalf("borsh encode %T: %v", part, err)
+		}
+	}
+	return buf.Bytes()
+}

tx.go

@@ -43,10 +43,12 @@ type Swap struct {
 	ActualLimitAmountSide SwapAmountSide
 	SlippageBps           decimal.Decimal
 
-	BaseReserve  decimal.Decimal
+	BaseReserve         decimal.Decimal
-	QuoteReserve decimal.Decimal
+	QuoteReserve        decimal.Decimal
-	Mayhem       bool
+	RealQuoteReserve    decimal.Decimal
-	Cashback     bool
+	VirtualQuoteReserve decimal.Decimal
+	Mayhem              bool
+	Cashback            bool
 
 	UserBaseBalance  decimal.Decimal
 	UserQuoteBalance decimal.Decimal

tx_binary.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"iter"
 	"math"
+	"math/big"
 	"sort"
 	"strconv"
 
@@ -18,7 +19,9 @@ import (
 
 const (
 	txBinarySchemaVersionV3      uint16 = 3
-	txBinarySchemaVersionCurrent uint16 = 4
+	txBinarySchemaVersionV4      uint16 = 4
+	txBinarySchemaVersionV5      uint16 = 5
+	txBinarySchemaVersionCurrent        = txBinarySchemaVersionV5
 	txBinaryEnumVersionV1        uint16 = 1
 
 	txBinarySOLScale     int32 = 9
@@ -102,6 +105,9 @@ type SwapBinary struct {
 	LpMint uint32
 
 	AfterSOLBalance float64
+
+	RealQuoteReserve    uint64
+	VirtualQuoteReserve [16]byte
 }
 
 type TxsBinary struct {
@@ -659,7 +665,7 @@ func (tx *TxBinary) ToTx() (*Tx, error) {
 	if len(tx.Swaps) > 0 {
 		out.Swaps = make([]Swap, 0, len(tx.Swaps))
 		for i, swap := range tx.Swaps {
-			decodedSwap, err := swap.toSwap(tx.AddressTable, i)
+			decodedSwap, err := swap.toSwap(tx.AddressTable, i, tx.SchemaVersion)
 			if err != nil {
 				return nil, err
 			}
@@ -797,6 +803,12 @@ func newSwapBinary(swap Swap, index int, addressIndex *txBinaryAddressIndex) (Sw
 	if out.QuoteReserve, err = txBinaryDecimalToFloat64Raw(swap.QuoteReserve, fmt.Sprintf("swap[%d].quote_reserve", index)); err != nil {
 		return SwapBinary{}, err
 	}
+	if out.RealQuoteReserve, err = txBinaryDecimalToUint64(swap.RealQuoteReserve, fmt.Sprintf("swap[%d].real_quote_reserve", index)); err != nil {
+		return SwapBinary{}, err
+	}
+	if out.VirtualQuoteReserve, err = txBinaryDecimalToInt128(swap.VirtualQuoteReserve, fmt.Sprintf("swap[%d].virtual_quote_reserve", index)); err != nil {
+		return SwapBinary{}, err
+	}
 	if out.UserBaseBalance, err = txBinaryDecimalToUint64(swap.UserBaseBalance, fmt.Sprintf("swap[%d].user_base_balance", index)); err != nil {
 		return SwapBinary{}, err
 	}
@@ -810,7 +822,7 @@ func newSwapBinary(swap Swap, index int, addressIndex *txBinaryAddressIndex) (Sw
 	return out, nil
 }
 
-func (swap SwapBinary) toSwap(addressTable []solana.PublicKey, index int) (Swap, error) {
+func (swap SwapBinary) toSwap(addressTable []solana.PublicKey, index int, schemaVersion uint16) (Swap, error) {
 	pool, err := txBinaryAddressAt(addressTable, swap.Pool, fmt.Sprintf("swap[%d].pool", index))
 	if err != nil {
 		return Swap{}, err
@@ -864,6 +876,20 @@ func (swap SwapBinary) toSwap(addressTable []solana.PublicKey, index int) (Swap,
 		return Swap{}, err
 	}
 
+	quoteReserve := txBinaryFloat64ToDecimalRaw(swap.QuoteReserve)
+	realQuoteReserve := quoteReserve
+	virtualQuoteReserve := decimal.Zero
+	if schemaVersion >= txBinarySchemaVersionV5 {
+		realQuoteReserve = decimal.NewFromUint64(swap.RealQuoteReserve)
+		virtualQuoteReserve = txBinaryInt128ToDecimal(swap.VirtualQuoteReserve)
+		// A v3/v4 batch upgraded by the streaming merger has no component
+		// bytes to carry forward. Preserve its legacy meaning after the
+		// merged output is written as v5.
+		if realQuoteReserve.IsZero() && virtualQuoteReserve.IsZero() && !quoteReserve.IsZero() {
+			realQuoteReserve = quoteReserve
+		}
+	}
+
 	return Swap{
 		Program:               swap.Program,
 		Event:                 swap.Event,
@@ -893,7 +919,9 @@ func (swap SwapBinary) toSwap(addressTable []solana.PublicKey, index int) (Swap,
 		ActualLimitAmountSide: swap.ActualLimitAmountSide,
 		SlippageBps:           decimal.NewFromUint64(swap.SlippageBps),
 		BaseReserve:           txBinaryFloat64ToDecimalRaw(swap.BaseReserve),
-		QuoteReserve:          txBinaryFloat64ToDecimalRaw(swap.QuoteReserve),
+		QuoteReserve:          quoteReserve,
+		RealQuoteReserve:      realQuoteReserve,
+		VirtualQuoteReserve:   virtualQuoteReserve,
 		Mayhem:                swap.Mayhem,
 		Cashback:              swap.Cashback,
 		UserBaseBalance:       decimal.NewFromUint64(swap.UserBaseBalance),
@@ -1071,6 +1099,44 @@ func txBinaryDecimalToUint64(value decimal.Decimal, field string) (uint64, error
 	return bigInt.Uint64(), nil
 }
 
+func txBinaryDecimalToInt128(value decimal.Decimal, field string) ([16]byte, error) {
+	var out [16]byte
+	if !value.Equal(value.Truncate(0)) {
+		return out, fmt.Errorf("%s must be an integer, got %s", field, value.String())
+	}
+
+	integer := value.BigInt()
+	limit := new(big.Int).Lsh(big.NewInt(1), 127)
+	minimum := new(big.Int).Neg(new(big.Int).Set(limit))
+	maximum := new(big.Int).Sub(new(big.Int).Set(limit), big.NewInt(1))
+	if integer.Cmp(minimum) < 0 || integer.Cmp(maximum) > 0 {
+		return out, fmt.Errorf("%s overflows int128: %s", field, value.String())
+	}
+
+	unsigned := new(big.Int).Set(integer)
+	if unsigned.Sign() < 0 {
+		unsigned.Add(unsigned, new(big.Int).Lsh(big.NewInt(1), 128))
+	}
+	var bigEndian [16]byte
+	unsigned.FillBytes(bigEndian[:])
+	for i := range out {
+		out[i] = bigEndian[len(bigEndian)-1-i]
+	}
+	return out, nil
+}
+
+func txBinaryInt128ToDecimal(raw [16]byte) decimal.Decimal {
+	var bigEndian [16]byte
+	for i := range raw {
+		bigEndian[i] = raw[len(raw)-1-i]
+	}
+	integer := new(big.Int).SetBytes(bigEndian[:])
+	if raw[len(raw)-1]&0x80 != 0 {
+		integer.Sub(integer, new(big.Int).Lsh(big.NewInt(1), 128))
+	}
+	return decimal.NewFromBigInt(integer, 0)
+}
+
 func txBinaryScaledDecimalToUint64(value decimal.Decimal, scale int32, field string) (uint64, error) {
 	return txBinaryDecimalToUint64(value.Shift(scale), field)
 }
@@ -1179,7 +1245,7 @@ func (enc *txBinaryEncoder) writeTxBinaryBody(tx *TxBinary, enumTable *txBinaryE
 	enc.writeUint32(tx.Signer)
 	enc.writeUint64(tx.Block)
 	enc.writeUint64(tx.BlockIndex)
-	if tx.SchemaVersion >= txBinarySchemaVersionCurrent {
+	if tx.SchemaVersion >= txBinarySchemaVersionV4 {
 		enc.writeUint64(uint64(tx.BlockAt))
 	}
 	enc.writeBool(tx.TxHash != nil)
@@ -1198,7 +1264,7 @@ func (enc *txBinaryEncoder) writeTxBinaryBody(tx *TxBinary, enumTable *txBinaryE
 	if err := enc.writeMevAgentEntries(tx.MevAgent, enumTable); err != nil {
 		return err
 	}
-	if err := enc.writeSwaps(tx.Swaps, enumTable); err != nil {
+	if err := enc.writeSwaps(tx.Swaps, enumTable, tx.SchemaVersion); err != nil {
 		return err
 	}
 	return nil
@@ -1230,7 +1296,7 @@ func (enc *txBinaryEncoder) writeMevAgentEntries(entries []MevAgentBinary, enumT
 	return nil
 }
 
-func (enc *txBinaryEncoder) writeSwaps(swaps []SwapBinary, enumTable *txBinaryEnumTable) error {
+func (enc *txBinaryEncoder) writeSwaps(swaps []SwapBinary, enumTable *txBinaryEnumTable, schemaVersion uint16) error {
 	enc.writeUint32(uint32(len(swaps)))
 	for i, swap := range swaps {
 		programID, err := enumTable.programs.id(swap.Program)
@@ -1280,6 +1346,10 @@ func (enc *txBinaryEncoder) writeSwaps(swaps []SwapBinary, enumTable *txBinaryEn
 		enc.writeUint32(swap.MigrateTopProgram)
 		enc.writeUint32(swap.LpMint)
 		enc.writeFloat64(swap.AfterSOLBalance)
+		if schemaVersion >= txBinarySchemaVersionV5 {
+			enc.writeUint64(swap.RealQuoteReserve)
+			enc.writeBytes(swap.VirtualQuoteReserve[:])
+		}
 	}
 	return nil
 }
@@ -1395,7 +1465,7 @@ func (dec *txBinaryDecoder) readMevAgentEntries(enumTable *txBinaryEnumTable) ([
 }
 
 func (dec *txBinaryDecoder) readSwaps(enumTable *txBinaryEnumTable, _ []solana.PublicKey) ([]SwapBinary, error) {
-	return txBinaryReadSwaps(dec, enumTable)
+	return txBinaryReadSwaps(dec, enumTable, txBinarySchemaVersionCurrent)
 }
 
 func (dec *txBinaryDecoder) readTxBinaryBody(tx *TxBinary, enumTable *txBinaryEnumTable, addressTable []solana.PublicKey) error {
@@ -1651,7 +1721,7 @@ func txBinaryReadMevAgentEntries(dec txBinaryBodyReader, enumTable *txBinaryEnum
 	return out, nil
 }
 
-func txBinaryReadSwaps(dec txBinaryBodyReader, enumTable *txBinaryEnumTable) ([]SwapBinary, error) {
+func txBinaryReadSwaps(dec txBinaryBodyReader, enumTable *txBinaryEnumTable, schemaVersion uint16) ([]SwapBinary, error) {
 	count, err := dec.readUint32()
 	if err != nil {
 		return nil, err
@@ -1798,6 +1868,16 @@ func txBinaryReadSwaps(dec txBinaryBodyReader, enumTable *txBinaryEnumTable) ([]
 		if swap.AfterSOLBalance, err = dec.readFloat64(); err != nil {
 			return nil, err
 		}
+		if schemaVersion >= txBinarySchemaVersionV5 {
+			if swap.RealQuoteReserve, err = dec.readUint64(); err != nil {
+				return nil, err
+			}
+			rawVirtualQuoteReserve, err := dec.readN(len(swap.VirtualQuoteReserve))
+			if err != nil {
+				return nil, err
+			}
+			copy(swap.VirtualQuoteReserve[:], rawVirtualQuoteReserve)
+		}
 		out = append(out, swap)
 	}
 	return out, nil
@@ -1815,7 +1895,7 @@ func txBinaryReadTxBody(dec txBinaryBodyReader, tx *TxBinary, enumTable *txBinar
 	if tx.BlockIndex, err = dec.readUint64(); err != nil {
 		return err
 	}
-	if tx.SchemaVersion >= txBinarySchemaVersionCurrent {
+	if tx.SchemaVersion >= txBinarySchemaVersionV4 {
 		blockAt, err := dec.readUint64()
 		if err != nil {
 			return err
@@ -1863,7 +1943,7 @@ func txBinaryReadTxBody(dec txBinaryBodyReader, tx *TxBinary, enumTable *txBinar
 	if tx.MevAgent, err = txBinaryReadMevAgentEntries(dec, enumTable); err != nil {
 		return err
 	}
-	if tx.Swaps, err = txBinaryReadSwaps(dec, enumTable); err != nil {
+	if tx.Swaps, err = txBinaryReadSwaps(dec, enumTable, tx.SchemaVersion); err != nil {
 		return err
 	}
 	return nil

tx_binary_test.go

@@ -82,6 +82,8 @@ func TestTxBinaryRoundTrip(t *testing.T) {
 				SlippageBps:           decimal.RequireFromString("833.3333"),
 				BaseReserve:           decimal.NewFromInt(5555),
 				QuoteReserve:          decimal.NewFromInt(9999),
+				RealQuoteReserve:      decimal.NewFromInt(10122),
+				VirtualQuoteReserve:   decimal.NewFromInt(-123),
 				Mayhem:                true,
 				Cashback:              false,
 				UserBaseBalance:       decimal.NewFromInt(777),
@@ -202,6 +204,12 @@ func TestTxBinaryRoundTrip(t *testing.T) {
 	if !swap.QuoteReserve.Equal(original.Swaps[0].QuoteReserve) {
 		t.Fatalf("swap.QuoteReserve = %s, want %s", swap.QuoteReserve, original.Swaps[0].QuoteReserve)
 	}
+	if !swap.RealQuoteReserve.Equal(original.Swaps[0].RealQuoteReserve) {
+		t.Fatalf("swap.RealQuoteReserve = %s, want %s", swap.RealQuoteReserve, original.Swaps[0].RealQuoteReserve)
+	}
+	if !swap.VirtualQuoteReserve.Equal(original.Swaps[0].VirtualQuoteReserve) {
+		t.Fatalf("swap.VirtualQuoteReserve = %s, want %s", swap.VirtualQuoteReserve, original.Swaps[0].VirtualQuoteReserve)
+	}
 	if !swap.UserBaseBalance.Equal(original.Swaps[0].UserBaseBalance) {
 		t.Fatalf("swap.UserBaseBalance = %s, want %s", swap.UserBaseBalance, original.Swaps[0].UserBaseBalance)
 	}
@@ -1017,6 +1025,89 @@ func TestTxBinaryDecodeSchemaV3LeavesBlockAtZero(t *testing.T) {
 	}
 }
 
+func TestTxBinaryDecodeSchemaV4DefaultsQuoteReserveComponents(t *testing.T) {
+	original := &Tx{
+		Signer:     mustPubKey("So11111111111111111111111111111111111111112"),
+		Block:      42,
+		BlockIndex: 2,
+		BlockAt:    1710000042,
+		Swaps: []Swap{
+			{
+				Program:             SolProgramPumpAMM,
+				Event:               TxEventBuy,
+				QuoteReserve:        decimal.NewFromInt(123456789),
+				RealQuoteReserve:    decimal.NewFromInt(123000000),
+				VirtualQuoteReserve: decimal.NewFromInt(456789),
+			},
+		},
+	}
+
+	binaryTx, err := NewTxBinary(original)
+	if err != nil {
+		t.Fatalf("NewTxBinary() error = %v", err)
+	}
+	binaryTx.SchemaVersion = txBinarySchemaVersionV4
+	encoded, err := binaryTx.MarshalBinary()
+	if err != nil {
+		t.Fatalf("MarshalBinary(v4) error = %v", err)
+	}
+	decoded, err := DecodeTxBinary(encoded)
+	if err != nil {
+		t.Fatalf("DecodeTxBinary(v4) error = %v", err)
+	}
+	if decoded.BlockAt != original.BlockAt {
+		t.Fatalf("BlockAt = %d, want %d", decoded.BlockAt, original.BlockAt)
+	}
+	if len(decoded.Swaps) != 1 {
+		t.Fatalf("Swaps len = %d, want 1", len(decoded.Swaps))
+	}
+	swap := decoded.Swaps[0]
+	if !swap.QuoteReserve.Equal(original.Swaps[0].QuoteReserve) {
+		t.Fatalf("QuoteReserve = %s, want %s", swap.QuoteReserve, original.Swaps[0].QuoteReserve)
+	}
+	if !swap.RealQuoteReserve.Equal(swap.QuoteReserve) {
+		t.Fatalf("RealQuoteReserve = %s, want legacy QuoteReserve %s", swap.RealQuoteReserve, swap.QuoteReserve)
+	}
+	if !swap.VirtualQuoteReserve.IsZero() {
+		t.Fatalf("VirtualQuoteReserve = %s, want 0", swap.VirtualQuoteReserve)
+	}
+}
+
+func TestTxBinarySignedInt128RoundTrip(t *testing.T) {
+	values := []string{
+		"-170141183460469231731687303715884105728",
+		"-123",
+		"-1",
+		"0",
+		"1",
+		"123",
+		"170141183460469231731687303715884105727",
+	}
+	for _, value := range values {
+		t.Run(value, func(t *testing.T) {
+			want := decimal.RequireFromString(value)
+			raw, err := txBinaryDecimalToInt128(want, "value")
+			if err != nil {
+				t.Fatalf("txBinaryDecimalToInt128() error = %v", err)
+			}
+			if got := txBinaryInt128ToDecimal(raw); !got.Equal(want) {
+				t.Fatalf("round trip = %s, want %s", got, want)
+			}
+		})
+	}
+
+	invalid := []string{
+		"-170141183460469231731687303715884105729",
+		"170141183460469231731687303715884105728",
+		"1.5",
+	}
+	for _, value := range invalid {
+		if _, err := txBinaryDecimalToInt128(decimal.RequireFromString(value), "value"); err == nil {
+			t.Fatalf("txBinaryDecimalToInt128(%s) error = nil", value)
+		}
+	}
+}
+
 func TestMergeTxsBinaryBytesUpgradesSchemaV3AndPreservesV4BlockAt(t *testing.T) {
 	legacyTx := Tx{
 		Signer:     mustPubKey("So11111111111111111111111111111111111111112"),
@@ -1029,11 +1120,18 @@ func TestMergeTxsBinaryBytesUpgradesSchemaV3AndPreservesV4BlockAt(t *testing.T)
 		Block:      52,
 		BlockIndex: 2,
 		BlockAt:    1710000052,
+		Swaps: []Swap{
+			{
+				Program:      SolProgramPumpAMM,
+				Event:        TxEventBuy,
+				QuoteReserve: decimal.NewFromInt(222),
+			},
+		},
 	}
 
 	merged, err := MergeTxsBinaryBytes([][]byte{
 		mustEncodeTxsBinaryV3(t, []Tx{legacyTx}),
-		mustEncodeTxsBinary(t, []Tx{currentTx}),
+		mustEncodeTxsBinaryV4(t, []Tx{currentTx}),
 	})
 	if err != nil {
 		t.Fatalf("MergeTxsBinaryBytes(v3,v4) error = %v", err)
@@ -1060,6 +1158,9 @@ func TestMergeTxsBinaryBytesUpgradesSchemaV3AndPreservesV4BlockAt(t *testing.T)
 	if decoded[1].BlockAt != currentTx.BlockAt {
 		t.Fatalf("current BlockAt = %d, want %d", decoded[1].BlockAt, currentTx.BlockAt)
 	}
+	if len(decoded[1].Swaps) != 1 || !decoded[1].Swaps[0].RealQuoteReserve.Equal(currentTx.Swaps[0].QuoteReserve) || !decoded[1].Swaps[0].VirtualQuoteReserve.IsZero() {
+		t.Fatalf("v4 quote reserve components were not preserved: %+v", decoded[1].Swaps)
+	}
 }
 
 func mustPubKey(value string) solana.PublicKey {
@@ -1109,6 +1210,24 @@ func mustEncodeTxsBinaryV3(t *testing.T, txs []Tx) []byte {
 	return encoded
 }
 
+func mustEncodeTxsBinaryV4(t *testing.T, txs []Tx) []byte {
+	t.Helper()
+
+	binaryTxs, err := NewTxsBinary(txs)
+	if err != nil {
+		t.Fatalf("NewTxsBinary() error = %v", err)
+	}
+	binaryTxs.SchemaVersion = txBinarySchemaVersionV4
+	for i := range binaryTxs.Txs {
+		binaryTxs.Txs[i].SchemaVersion = txBinarySchemaVersionV4
+	}
+	encoded, err := binaryTxs.MarshalBinary()
+	if err != nil {
+		t.Fatalf("MarshalBinary(v4) error = %v", err)
+	}
+	return encoded
+}
+
 func mustTxBinary(t *testing.T, data []byte) *TxsBinary {
 	t.Helper()