* fix(examples): add bonding_curve_v2 remaining account to learning examples
Add the required bonding_curve_v2 PDA as a remaining account to buy/sell
instructions in manual_buy, manual_sell, mint_and_buy, and mint_and_buy_v2
learning examples, matching the pump.fun program upgrade.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(examples): add bonding_curve_v2 to manual_buy_geyser and manual_buy_cu_optimized
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Update all 3 pump.fun IDL files (pump_fun, pump_swap, pump_fees) with
new cashback rewards and fee-sharing features. Fix IDL parser to handle
tuple struct types (OptionBool). Add bonding_curve_v2 remaining account
to all buy/sell instructions as required by the pump.fun program upgrade.
Key changes:
- Fix IDL parser crash on tuple struct fields (string vs dict)
- Add bonding_curve_v2 PDA derivation and append as remaining account
- Add is_cashback_coin field to TokenInfo and BondingCurve decoding
- Propagate is_cashback_enabled from CreateEvent/create_v2 to TokenInfo
- Conditionally include user_volume_accumulator for cashback sell txs
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
* fix(core): disable account_data_size limit and add meta.err checking
The 12.5MB setLoadedAccountsDataSizeLimit was causing all buy transactions
to fail with MaxLoadedAccountsDataSizeExceeded since pump.fun migrated to
Token-2022. Transactions landed on-chain (fees paid) but inner instructions
were rejected — the bot paid gas for nothing.
Changes:
- Disable account_data_size in all bot configs (Token-2022 needs >12.5MB)
- Add meta.err check in get_buy_transaction_details() for clear error
reporting when transactions fail on-chain
- Include tx signature in platform_aware.py error messages for debugging
Tested: full buy→sell→cleanup cycle works on pump_fun with geyser listener.
* fix(core): check meta.err in confirm_transaction to detect failed txs
Solana transactions can be "confirmed" (included in a block) but still
fail execution if inner program instructions are rejected. Previously,
confirm_transaction only checked that the tx landed on-chain, causing
silent failures in buy, sell, and cleanup operations.
Now fetches the transaction result after confirmation and checks
meta.err, returning False when the transaction failed. This fixes
the ATA cleanup issue where sells were silently failing with
Custom: 6003 errors, leaving non-zero token balances.
* fix(core): treat failed tx fetch as unconfirmed in confirm_transaction
When _get_transaction_result returns None (RPC failure, timeout, etc.),
the function was falling through to return True — silently treating an
unknown state as success. Now returns False with a warning log.
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Fixeschainstacklabs/pumpfun-bonkfun-bot#152
Changes:
- Make uvloop optional with platform-specific markers (Unix only)
- Add winloop as Windows alternative for performance optimization
- Update code to gracefully fall back to standard asyncio when event loop
libraries are unavailable
- Both bot_runner.py and universal_trader.py now detect platform and use
appropriate event loop implementation
This resolves the blocking installation issue for Windows users while
maintaining performance benefits on all platforms. Windows users can now
install and run the bot with winloop for improved performance, or use
standard asyncio as fallback.
Related: https://github.com/smypmsa/gh-triage-reports/blob/main/issues/chainstacklabs-pumpfun-bonkfun-bot/issue-152-2026-02-08.md
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
* feat(trading): enhance sell execution with token amount and price parameters to reduce RPC delays
* feat(trading): add method to fetch actual token balance after transaction to improve accuracy
* feat(trading): update account data size limit and enhance price calculations
* feat(core): support multiple initialize instruction variants in LetsBonkEventParser
* feat(core): add creator and platform fee vault derivation methods and update account handling in buy/sell instructions
* feat(letsbonk): add global_config and platform_config to TokenInfo and update address provider logic
