* 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.
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
* feat(core): add RPC rate limiting, retry logic, and 429 handling
Addresses #44 — users on free-tier RPC endpoints hit HTTP 429 errors
during buy transactions due to no rate limiting or retry handling.
- Add TokenBucketRateLimiter (new file: src/core/rpc_rate_limiter.py)
- Gate all RPC methods through rate limiter (both post_rpc and solana-py calls)
- Rewrite post_rpc() with retry loop, exponential backoff, jitter, and
specific 429 detection with Retry-After header support
- Replace per-call aiohttp session with shared persistent session
- Wire node.max_rps from YAML bot config through to SolanaClient
- Fix cleanup manager and learning example to use SolanaClient abstraction
instead of bypassing it via get_client()
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(core): address CodeRabbitAI review feedback on rate limiting PR
Validate max_rps > 0 in TokenBucketRateLimiter to prevent ZeroDivisionError
and infinite loops with fractional values. Add asyncio.Lock to _get_session
to fix race condition, handle non-numeric Retry-After headers gracefully,
replace dead json.JSONDecodeError with aiohttp.ContentTypeError, and combine
burn+close into a single transaction in cleanup example.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* docs: document RPC rate limiting feature in README
- Add section on built-in RPC rate limiting with token bucket algorithm
- Document configurable max RPS and automatic retry logic
- Update roadmap to mark "Configurable RPS" as completed
- Clarify benefits of rate limiting for provider compliance
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
* fix: use math.ceil for burst_size to handle fractional max_rps
- Replace int(max_rps) with math.ceil(max_rps) in burst_size calculation
- Prevents infinite loop when max_rps < 1.0 (e.g., 0.5 RPS would result in burst_size=0)
- Ensures burst_size is always at least 1 for valid fractional rates
- Addresses CodeRabbit feedback on rpc_rate_limiter.py:27
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
* fix(core): validate burst_size and fix table pipe consistency
Address remaining CodeRabbitAI review feedback: add burst_size
validation guard, fix TRY003 lint (use msg variable for ValueError),
break long line under 88 chars, and fix MD055 table pipe style in README.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(core): separate 429 retry budget from error retries in post_rpc
429 responses no longer count against max_retries — they use a dedicated
max_429_retries counter (default 10) so free-tier users hitting rate
limits won't exhaust retries prematurely. Also refresh the aiohttp
session inside the retry loop to avoid stale references after network
failures, and fix cleanup log message accuracy.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Anton Sauchyk <antonsauchyk@gmail.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
Anton Sauchyk