pumpfun-bonkfun-bot_github/CLAUDE.md

Agent guide

Solana trading bot for pump.fun and letsbonk.fun. Snipes newly created tokens and exits on a configured strategy. See README.md for setup and configuration; this file covers what an agent needs that the code doesn't make obvious.

AGENTS.md is a symlink to this file, so Claude Code, Codex, Cursor, and Windsurf all read the same guide.

Ground rules

• Never run a bot with real funds to test a change. Use learning-examples/, or the simulation scripts below, which move no funds.
• Never touch .env or print its contents. SOLANA_PRIVATE_KEY is a live key.
• Don't commit anything from logs/.
• Test with a learning example before touching src/.

Layout

src/            bot source — this dir is the import root (see below)
learning-examples/   standalone scripts; each runs on its own, no bot config
bots/           one YAML per bot instance
idl/            vendored Anchor IDLs
logs/           {bot_name}_{timestamp}.log

Imports are rooted at src/, not at the repo. uv pip install -e . puts src/ itself on sys.path, so it is from core.client import SolanaClient and from utils.logger import get_logger — not from src.core.... Learning examples are deliberately self-contained: they import siblings like pump_v2 and tx_status as top-level modules and mostly don't import from src at all. Don't "fix" an example by rewiring it to import the bot.

Dependency layers, low to high — don't introduce an upward import:

utils → interfaces → core → platforms → trading / monitoring → bot_runner

Platform differences are resolved through interfaces/core.py abstractions (AddressProvider, curve manager, event parser, instruction builder) and a registry in platforms/__init__.py. Listeners and the trader are platform-agnostic (Universal*); anything platform-shaped belongs under platforms/<name>/.

Naming inside learning-examples/

• Directories are kebab-case (bonding-curve-progress, listen-new-tokens, copy-trading). A single-token product name stays one word (pumpswap).
• Files are snake_case, verb first — fetch_price.py, decode_from_*.py, extract_blocksubscribe_transactions.py, verify_*.py, simulate_*.py. Exceptions are the shared helper modules pump_v2.py and tx_status.py, which are libraries rather than runnable scripts.
• RPC and service names are lowercased into one token, never camelCase: blocksubscribe, logsubscribe, programsubscribe, getaccountinfo, gettransaction, pumpportal. So decode_from_gettransaction.py, not decode_from_getTransaction.py.
• Fixtures are raw_<what>_from_<method>.json next to the script that reads them, under the same rules.
• live_* marks a script that spends real funds; simulate_* and verify_* never do.

Commands

uv sync                      # install runtime deps + the dev group (ruff)
uv pip install -e .          # editable install (required for the imports above)
pump_bot                     # run all enabled bots
uv run src/bot_runner.py     # same, without the console script

Lint and format the files you touched, not the whole tree:

uv run ruff check --fix <paths> && uv run ruff format <paths>

A bare uv run ruff check reports ~2400 pre-existing errors across the repo. That is the known baseline, not something your change caused — don't try to fix it wholesale, and don't read it as a failing build. Just don't add new ones in the files you edit.

Ruff config lives in pyproject.toml: line length 88, double quotes, target py311, E501 ignored. Selected rule families include ANN (type annotations), S (security), BLE/TRY (exceptions), C90/PL (complexity), ERA (no commented-out code). Type-hint public functions, Google-style docstrings, and get_logger(__name__) for logging.

Python 3.11+ (requires-python = ">=3.11", matching ruff's target). Runtime deps are declared in [project.dependencies]; ruff and grpcio-tools live in [dependency-groups] dev, which uv sync installs by default. grpcio-tools is protoc — needed only to regenerate the geyser_pb2 stubs in src/geyser/generated/ from src/geyser/proto/, never at runtime. That is the only copy: the geyser examples reach it by putting the repo root on sys.path and importing src.geyser.generated. Don't add a second copy under learning-examples/ — the last one drifted out of sync with the protos.

Verifying pump.fun v2 trade instructions

# Offline: cross-check buy_v2/sell_v2 account layouts, PDA/ATA derivations,
# instruction encoding and quote-asset config against idl/pump_fun_idl.json
uv run learning-examples/verify_v2_account_layout.py

# Mainnet, no funds moved: simulate buy_v2/sell_v2 for one coin, report CU
uv run learning-examples/simulate_v2_trades.py <MINT>

# Mainnet, no funds moved: run the bot's whole buy path against a fresh coin
uv run learning-examples/simulate_bot_buy_path.py
uv run learning-examples/simulate_bot_buy_path.py --no-extreme-fast

Run all three after any pump.fun program upgrade. The simulations report unitsConsumed; use it to retune get_buy_compute_unit_limit / get_sell_compute_unit_limit in platforms/pumpfun/instruction_builder.py.

Verifying transaction-status handling

# Offline: stub checks plus a scan that every example verifies meta.err
uv run learning-examples/verify_tx_status_checks.py

# Adds a mainnet replay of the reverted signatures from issue #175
uv run learning-examples/verify_tx_status_checks.py --live

confirm_transaction answers "did this land in a block?", never "did it succeed". A landed transaction can have reverted, and RPC reports that only in meta.err. Reporting success without reading it is issue #175: buys reverting with BuybackFeeRecipientMissing (6062) printed as confirmed buys.

• Examples use learning-examples/tx_status.py — confirm_and_assert in place of a bare confirm_transaction, or assert_transaction_succeeded after one. The verifier above fails the build if a new example skips it.
• The bot uses SolanaClient.confirm_transaction, which folds meta.err into its return value. Read the boolean — discarding it is the same bug.
• _get_transaction_result must send maxSupportedTransactionVersion: 0 or the RPC rejects every versioned (v0) transaction with -32015, and a good trade reads back as unconfirmed.
• build_and_send_transaction returns a solders Signature, not a str. A Signature is not JSON serializable and does not support slicing; a str is rejected by solana-py's confirm_transaction. Normalize at the boundary.
• post_rpc must catch asyncio.TimeoutError alongside aiohttp.ClientError. aiohttp raises the former when the request timeout fires and it is not a ClientError, so leaving it out lets every RPC timeout escape unretried — and str() on it is empty, so the caller logs a blank reason. A slow getAccountInfo is enough to take down a whole listener run this way.

Listener and decoder pitfalls

Each of these was a live bug in learning-examples/, all of them invisible offline and only visible after a couple of minutes against mainnet.

• A while True: recv() loop must break out on websockets.ConnectionClosed. Catching it in a broad except Exception that only logs makes the next recv() raise immediately, forever: compare_listeners.py produced 13,090,862 error lines / 888 MB in 150 s and never reached its own 30-second report. The outer reconnect handler with its sleep is unreachable in that shape. A narrow except TimeoutError or except json.JSONDecodeError is fine to swallow — those are per-message, not per-connection.
• Resolve v0 lookup-table accounts before indexing them. An instruction's account indices can point past message.account_keys into the address lookup table, which geyser reports in meta.loaded_writable_addresses then loaded_readonly_addresses (that order). Ignoring them crashed the geyser example with IndexError after ~11 coins in 150 s; resolving them removed the crash and brought its detection count level with the WebSocket listeners (35 coins each over the same window).
• Identify an instruction by its 8-byte discriminator, never by account count. Several pump.fun instructions share a count, so counting mislabels them and then prints every account under the wrong name — a real 19-account create_v2 was reported as claim_cashback. Note buy_exact_sol_in is also 18 accounts on chain, same as legacy buy.
• Walk meta.innerInstructions, not just message.instructions. Most trades reach the program as a CPI from a router or aggregator: in 40 consecutive pump.fun transactions there was 1 top-level pump instruction against 8 inner ones. Anchor's event-CPI prefix (e445a52e51cb9a1d) accounts for a good share of the inner instructions; the event's own discriminator follows it.
• getProgramAccounts over the whole pump program is rejected by current providers: "Too many accounts requested (10000001 pubkeys) … use getProgramAccountsV2 with pagination". It still works against pump-amm, which is small enough. bonding-curve-progress/get_graduating_tokens.py is knowingly broken on this and needs the V2 pagination rewrite.
• SetLoadedAccountsDataSizeLimit must stay generous: 16 MB, not 512 KB. Verified by simulation on a Token-2022 mint with extensions — 512 KB and 4 MB both fail MaxLoadedAccountsDataSizeExceeded with unitsConsumed=0 (never executed), while 16 MB reaches the buy instruction and is still 4x under the 64 MB default. solders has no builder for it; encode struct.pack("<BI", 4, n) against the compute-budget program.

Pump.fun protocol notes (gotchas)

The IDLs under idl/ are vendored verbatim from github.com/pump-fun/pump-public-docs (idl/pump.json → pump_fun_idl.json, pump_amm.json → pump_swap_idl.json, pump_fees.json). Refresh them from upstream rather than hand-editing.

Quote assets and the v2 trade instructions (current path)

• pump.fun supports quote assets other than SOL. BondingCurve.quote_mint is Pubkey::default() (all zeros) for SOL-paired coins; USDC (EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v) is whitelisted in Global. Legacy buy/sell cannot trade non-SOL-paired coins at all.
• The bot uses buy_v2 (27 accounts) and sell_v2 (26 accounts). Every account is mandatory and the order is identical for every coin — SOL or USDC paired, mayhem or not, cashback or not. sell_v2 is buy_v2 minus global_volume_accumulator. Layouts live in _BUY_V2_ACCOUNTS / _SELL_V2_ACCOUNTS in platforms/pumpfun/instruction_builder.py and are machine-checked against the IDL by learning-examples/verify_v2_account_layout.py.
• v2 args carry no track_volume OptionBool (24-byte data: discriminator + two u64). Volume tracking is unconditional now that user_volume_accumulator is mandatory. max_sol_cost/min_sol_output are in the quote mint's raw units — lamports for SOL, 1e-6 for USDC.
• Even for SOL-paired coins you must pass wrapped SOL as quote_mint, not Pubkey::default(). Transfers still happen in native SOL, and the associated_quote_* accounts are only seed-constrained — do not create the user's WSOL ATA, it would burn ~0.002 SOL of rent for nothing.
• Fee recipients: 24 total, in three sets of 8 (NORMAL_FEE_RECIPIENTS, RESERVED_FEE_RECIPIENTS for mayhem coins, BUYBACK_FEE_RECIPIENTS). Every v2 buy/sell needs a fee_recipient and a buyback_fee_recipient. The set is randomized per tx, per pump.fun's guidance on spreading program throughput.
• sharing_config (PDA ["sharing-config", base_mint]) lives under the pump fees program, not the pump program. Easy to derive against the wrong program.

BondingCurve account layout

• The account is 151 bytes: 8-byte discriminator, then virtual_token_reserves, virtual_quote_reserves, real_token_reserves, real_quote_reserves, token_total_supply (u64 each), complete (1B, offset 48), creator (32B, offset 49), is_mayhem_mode (offset 81), is_cashback_coin (offset 82), quote_mint (32B, offset 83), then 36 reserved zero bytes. The documented struct is 115 bytes; the extra 36 are padding.
• The SOL-named fields were renamed: virtual_sol_reserves → virtual_quote_reserves, real_sol_reserves → real_quote_reserves. The curve manager still exposes the old names as aliases, so pre-existing callers keep working for SOL-paired coins — but anything doing arithmetic must scale by the quote mint's decimals (quote_units_per_token), not a hardcoded 1e9.
• PumpSwap Pool gained a trailing virtual_quote_reserves: i128 (16 bytes, offset 245). Pool fields end at 261; live accounts are 301 bytes with trailing padding. Quote against effective reserves: pool_quote_token_account.amount + virtual_quote_reserves. Upstream's release note claims it is 0 on all pools — that is out of date. Verified on mainnet: pool 6Bv1JM1deBPe… carries 17.584505433 SOL of virtual reserves against a 148.455 SOL vault, so quoting off the raw vault balance under-prices by ~10.6%. It is i128, not u64 — reading 8 bytes happens to work only while the high half is zero.
• pump-amm has no buy_v2/sell_v2. The AMM instruction names are unchanged; only the pool layout and quoting moved.

Coin creation

• The IDL instruction is create_v2 (snake_case). Args: name (str), symbol (str), uri (str), creator (pubkey), is_mayhem_mode (bool), is_cashback_enabled (OptionBool 1B). OptionBool is a struct wrapping a single bool — serialized as 1 byte, not 2.
• is_cashback_enabled can be absent from the wire entirely. Two mainnet create_v2 instructions carry 0001 and 00 after creator: one sends both trailing args, the other omits the last. A decoder that reads a fixed number of trailing bytes raises IndexError on roughly half of all coins. Decode trailing args defensively and report a missing one as unset.
• create_v2 accounts 1-16 are in the IDL; accounts 17-19 are optional remaining accounts (quote_mint, associated_quote_bonding_curve, quote_token_program). All three or none. This is the only way to read a new coin's quote asset from the instruction rather than the event. In practice they are appended for SOL-paired coins too, carrying wrapped SOL — a live SOL-paired create_v2 was observed with 19 accounts and account 17 = WSOL — so do not treat a 19-account create_v2 as proof of a non-SOL quote asset. Read quote_mint off the curve instead.
• The associated bonding curve is an ordinary ATA, so its address depends on which token program owns the mint: Token2022 for create_v2 coins, SPL Token for legacy create. Deriving with the wrong program returns a valid-looking address that does not exist on chain. Verified: curve 3jJ83ND… derives to Cd4iC3Jn… under Token2022 (matches chain) and AhNzZsBp… under SPL Token.
• extreme_fast_mode skips the curve-state price fetch but still refreshes mayhem/cashback/creator/quote_mint from chain, because the wrong quote mint means spending the wrong balance entirely. Event parsers also populate quote_mint from CreateEvent (which gained quote_mint and virtual_quote_reserves as trailing fields).

Legacy instructions (fallback only)

Retained behind PumpFunInstructionBuilder(..., use_legacy_instructions=True). The IDL under-reports these: buy is 18 accounts on-chain (IDL lists 16) and sell is 16 non-cashback / 17 cashback (IDL lists 14). The extras are bonding-curve-v2 (PDA ["bonding-curve-v2", mint]) followed by a buyback fee recipient (mutable); the cashback sell path also inserts user_volume_accumulator before bonding-curve-v2. On the PumpSwap side the legacy path needs pool-v2 (PDA ["pool-v2", base_mint] under pump-amm) — without it pump-amm throws AnchorError 6023 (Overflow) after the transfers complete, a misleading code for a missing account. Prefer v2 — it is the interface pump.fun maintains.

Config notes

• Bot YAML supports ${VAR} interpolation from the file named by env_file. Actual variable names are SOLANA_NODE_RPC_ENDPOINT, SOLANA_NODE_WSS_ENDPOINT, SOLANA_PRIVATE_KEY, GEYSER_*.
• config_loader.py validates the platform/listener pairing before startup: pump.fun supports logs, blocks, geyser, pumpportal; letsbonk.fun supports blocks, geyser, pumpportal — not logs. Adding a listener means updating PLATFORM_LISTENER_COMPATIBILITY there too.
• Bots with separate_process: true run in their own process. One log file per bot instance.