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Anton Sauchyk
c25e2edb57
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>