feat(examples): add 18-account buy / 16-17-account sell for 2026-04-28 upgrade
pump.fun program upgrade scheduled for 2026-04-28 16:00 UTC adds one new
mutable account (one of 8 fee recipients) at the end of buy/sell ixs,
after bonding-curve-v2. The new format is already accepted on mainnet
ahead of the cutover, so applying now keeps scripts working on both
sides of the upgrade.
Doc: github.com/pump-fun/pump-public-docs/blob/main/docs/BREAKING_FEE_RECIPIENT.md
Per file:
manual_buy.py — 18-account buy. Also fixes a pre-existing
listener crash on Address-Lookup-Table create
txs (skips them) and adds bool/OptionBool
handling to decode_create_instruction so
create_v2 doesn't raise on its trailing args.
manual_buy_cu_optimized.py — 18-account buy. Bumps the CU-optimization
account-data limit to 16MB (tested) — older
values trigger MaxLoadedAccountsDataSizeExceeded
on Token-2022/cashback coins. Same listener
ALT-skip and decoder bool fixes.
manual_buy_geyser.py — 18-account buy. Re-enables price calculation
and mayhem-mode-aware fee_recipient detection
(was scaffolded out for testing).
manual_sell.py — 16-account non-cashback / 17-account cashback
sell. Reads is_cashback_coin from BC byte 82
and inserts user_volume_accumulator before
bonding-curve-v2 when needed. TOKEN_MINT now
accepts argv[1] override.
Live-verified on mainnet:
buy manual_buy.py 3AVnLC3sdBD598cs3... + 3bWU9bB8U9aemA2BFhS2...
buy manual_buy_cu_optimized 2PfH5rHw62o3KkQ3N4z8...
sell manual_sell.py 3E7dyPBPBRe95BtPQXmb... + 5L4wWSzPV36m6XqXAswB...
All four show the expected 18 (buy) / 16 (sell non-cashback) account count
with one of the 8 BREAKING_FEE_RECIPIENTS as the trailing mutable account.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Anton Sauchyk
co-authored by
Claude Opus 4.7
Claude Opus 4.7
parent
9b4841890c
commit
c25e2edb57
@@ -1,6 +1,8 @@
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import asyncio
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import os
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import random
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import struct
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import sys
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import base58
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from construct import Flag, Int64ul, Struct
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@@ -18,7 +20,7 @@ from spl.token.instructions import get_associated_token_address
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# Here and later all the discriminators are precalculated. See learning-examples/calculate_discriminator.py
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EXPECTED_DISCRIMINATOR = struct.pack("<Q", 6966180631402821399)
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TOKEN_DECIMALS = 6
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TOKEN_MINT = Pubkey.from_string("...") # Replace with actual token mint address
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TOKEN_MINT = Pubkey.from_string(sys.argv[1] if len(sys.argv) > 1 else "...") # Pass mint as argv[1] or hardcode here
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# Global constants
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PUMP_PROGRAM = Pubkey.from_string("6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P")
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@@ -42,6 +44,20 @@ UNIT_BUDGET = 100_000
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RPC_ENDPOINT = os.environ.get("SOLANA_NODE_RPC_ENDPOINT")
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# 8 breaking-upgrade fee recipients (pump.fun program upgrade 2026-04-28).
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# One must be appended (mutable) AFTER bonding-curve-v2 on every buy/sell.
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# Doc: github.com/pump-fun/pump-public-docs/blob/main/docs/BREAKING_FEE_RECIPIENT.md
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BREAKING_FEE_RECIPIENTS = [
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Pubkey.from_string("5YxQFdt3Tr9zJLvkFccqXVUwhdTWJQc1fFg2YPbxvxeD"),
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Pubkey.from_string("9M4giFFMxmFGXtc3feFzRai56WbBqehoSeRE5GK7gf7"),
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Pubkey.from_string("GXPFM2caqTtQYC2cJ5yJRi9VDkpsYZXzYdwYpGnLmtDL"),
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Pubkey.from_string("3BpXnfJaUTiwXnJNe7Ej1rcbzqTTQUvLShZaWazebsVR"),
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Pubkey.from_string("5cjcW9wExnJJiqgLjq7DEG75Pm6JBgE1hNv4B2vHXUW6"),
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Pubkey.from_string("EHAAiTxcdDwQ3U4bU6YcMsQGaekdzLS3B5SmYo46kJtL"),
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Pubkey.from_string("5eHhjP8JaYkz83CWwvGU2uMUXefd3AazWGx4gpcuEEYD"),
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Pubkey.from_string("A7hAgCzFw14fejgCp387JUJRMNyz4j89JKnhtKU8piqW"),
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]
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class BondingCurveState:
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"""Bonding curve state parser with progressive field parsing.
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@@ -95,9 +111,16 @@ class BondingCurveState:
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# Parse mayhem mode flag if bytes remaining (added in V3)
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if len(data) >= offset + 1:
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self.is_mayhem_mode = bool(data[offset])
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offset += 1
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else:
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self.is_mayhem_mode = False
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# Parse cashback flag if bytes remaining (added in V4 — late-Feb 2026 cashback upgrade)
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if len(data) >= offset + 1:
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self.is_cashback_coin = bool(data[offset])
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else:
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self.is_cashback_coin = False
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async def get_pump_curve_state(
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conn: AsyncClient, curve_address: Pubkey
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@@ -155,6 +178,14 @@ def _find_bonding_curve_v2(mint: Pubkey) -> Pubkey:
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return derived_address
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def _find_user_volume_accumulator(user: Pubkey) -> Pubkey:
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derived_address, _ = Pubkey.find_program_address(
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[b"user_volume_accumulator", bytes(user)],
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PUMP_PROGRAM,
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)
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return derived_address
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async def get_fee_recipient(
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client: AsyncClient, curve_state: BondingCurveState
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) -> Pubkey:
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@@ -320,13 +351,31 @@ async def sell_token(
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is_signer=False,
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is_writable=False,
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),
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# Remaining account: bonding_curve_v2 (readonly, required for all coins)
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]
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# For cashback coins, insert user_volume_accumulator before bonding-curve-v2 (17 accounts total).
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if curve_state.is_cashback_coin:
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accounts.append(
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AccountMeta(
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pubkey=_find_user_volume_accumulator(payer.pubkey()),
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is_signer=False,
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is_writable=True,
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)
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)
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accounts.extend([
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# bonding_curve_v2 (readonly, required for all coins)
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AccountMeta(
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pubkey=_find_bonding_curve_v2(mint),
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is_signer=False,
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is_writable=False,
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),
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]
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# Breaking-upgrade fee recipient (mutable) — required from 2026-04-28.
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# 16 accounts non-cashback / 17 accounts cashback.
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AccountMeta(
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pubkey=random.choice(BREAKING_FEE_RECIPIENTS),
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is_signer=False,
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is_writable=True,
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),
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])
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discriminator = struct.pack("<Q", 12502976635542562355)
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# Encode OptionBool for track_volume: [1, 1] = Some(true)
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