sol-parser-sdk-python 0.5.15

<h1>⚡ Sol Parser SDK - Python</h1>
<h3><em>High-performance Solana DEX event parser for Python</em></h3>

High-performance Python library for parsing Solana DEX events in real-time via Yellowstone gRPC

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📦 SDK Versions and Related SDKs

Parser SDK language versions and related Rust SDKs:

v0.5.14 — Pump route direction and instruction names

Route intents now expose is_buy and ix_name, following existing trade field names and official IDL instruction names. RapidBuy reports a buy intent and buy_exact_quote_in_v2; BuyPumpDelta reports only a buy intent. Multi-hop direction and unknown methods remain null. Read currencies from hops[].base_mint / quote_mint. These hints do not confirm execution, and filters do not convert intents into trades.

Older JSON without the fields remains readable as unknown. Rust struct literals must supply the new fields; Go uses pointers and Node.js/Python use null/None for unknown values. Streamer now forwards DexEvent::PumpRouteIntentEvent with protocol and event filtering.

v0.5.13 — Pump routes and offline replay

Adds native Pump route-intent parsing for official multi-hop instructions and the exact RapidBuy/BuyPumpDelta wrapper layouts captured in reported transactions. Adds locally cached ALT resolution and rejects unresolved account identities by default, with explicit best-effort compatibility APIs where supported. Route intents expose instruction constraints and hop identities; confirmed execution amounts require execution metadata.

Includes the latest complete implementation, signed transaction fixtures, native offline-bank regression examples and reproducible local hot-path benchmarks. Unknown wrapper layouts are not inferred from embedded bytes. Local tests do not measure production network latency.

v0.5.12 — Pump depth-2 compatibility

Adds signed Pump depth-2 create-event replay coverage, including ALT-loaded accounts and executed logs. Existing event layouts and public parsing interfaces remain unchanged.

Validation includes official Pump SDK 4.1.0 instruction comparisons, signed local LiteSVM simulations and SDK regressions. Local simulation state/config is synthetic; no funded transactions were broadcast and production latency was not measured.

v0.5.11 — Signed transaction and hot-path hardening

Hardens signed transaction sanitization, loaded-address boundaries, ordered stream filtering and parser lifecycle. Aligns CLMM and DEX instruction/event layouts, nested CPI route attribution and liquidity/reward accounting. Adds independently signed wire fixtures, ALT failure cases and offline bank regressions.

Validation includes local CPU benchmarks and offline signed-bank scenarios. Measured hot paths use cached inputs without RPC. Benchmarks do not establish production network or transaction-landing latency. No funded mainnet transactions were broadcast.

What This SDK Is For

This is the Python implementation of the FnZero Solana DEX parser SDK for asyncio services, research scripts, indexers, copy-trading systems, sniper pipelines, and backend jobs that need normalized real-time DEX events.

Release notes

v0.5.10

• Matches PumpFun create/create_v2 accounts by the actual instruction discriminator and event mint, including CPI calls; ambiguous matches are left unspecified.
• Stops inferring quote mint/vault/token-program fields from arbitrary remaining create_v2 accounts and preserves authoritative decoded fields.
• Restores historical CreateEvent decoding and verifies successful and failed transactions using saved mainnet fixtures.
• Suppresses rolled-back DEX events from failed transactions and preserves failure status through RPC/gRPC adapters.

v0.5.9

• Adds native gRPC lifecycle and block metadata support, instruction-level route analysis and StonkFun registry/snapshot examples.
• Improves exact metadata serialization, account matching and wire transaction bounds validation.
• Includes native alignment evidence and simulation route fixtures. These language releases do not yet implement the new CPMM creator-fee collection event API.

v0.5.8

• Syncs with Rust sol-parser-sdk 0.7.3, including the current PumpFun, PumpSwap, and Pump Fees protocol definitions.
• Adds Meteora DAMM v2 events: UpdateDelegatePermission, WithdrawDeadLiquidityReward, CreateConfig, CreateDynamicConfig.
• Fixes DAMM v2 EvtSwap2 full 180-byte layout, three swap modes, transfer fees, reserves, and compounding-fee layout activation slot 406048752.
• Routes unified EvtLiquidityChange by change_type to AddLiquidity / RemoveLiquidity.
• Adds DLMM mint/user-token/min_amount_out context, PumpFun pre/post token & SOL balances, and LaunchLab quote/global/platform account fields.
• Adds current PumpFun/PumpSwap creator-fee and holder-reward fields across instruction, log, account, gRPC, and JSON event paths.
• Rejects truncated known PumpSwap trade and CreatePool tails while retaining complete historical layouts.

v0.5.6

• Adds Meteora DBC log parsing with program-context routing and filter parity.
• Adds Raydium CLMM/CPMM and Orca account parsers and exports.
• Fixes default no-filter RPC/Yellowstone instruction parsing so it no longer behaves like an empty include-only filter.
• Merges RPC ALT loaded writable/readonly keys into the full instruction account table.
• Skips ShredStream/RPC instruction parsing early for account-only or empty include-only filters.

v0.5.5

• Aligns ShredStream parsing with Rust/Node.js/Go for low-latency static-account paths.
• Uses default pubkey placeholders for V0 ALT-loaded instruction accounts instead of dropping the instruction.
• Adds discriminator fallback when the ShredStream outer program id is ALT-loaded.
• Fixes Pump.fun ShredStream create/create_v2 fallback to use instruction-order accounts.
• Improves Pump.fun v2 short-account parsing, event-type filtering, and multi-protocol routing parity.

How to use

1. Install

From PyPI

pip install sol-parser-sdk-python==0.5.15

From source

git clone https://github.com/0xfnzero/sol-parser-sdk-python
cd sol-parser-sdk-python
pip install -e .
pip install grpcio grpcio-tools protobuf base58 python-dotenv

2. Environment (Yellowstone gRPC examples)

At the package root (next to pyproject.toml):

cp .env.example .env
# Set GRPC_URL (or GRPC_ENDPOINT) and GRPC_AUTH_TOKEN or GRPC_TOKEN

Run examples from that directory so .env is picked up (same idea as the Node.js package).

CLI overrides: --grpc-url / -g, --grpc-token / --token (also --grpc-url=https://host:443). Rust-compatible names: GRPC_AUTH_TOKEN (same as sol-parser-sdk examples), GRPC_ENDPOINT (alias for URL). Legacy env: GEYSER_ENDPOINT / GEYSER_API_TOKEN. Precedence: CLI > GRPC_URL / GRPC_ENDPOINT > GEYSER_* > defaults; token: CLI > GRPC_AUTH_TOKEN > GRPC_TOKEN > GEYSER_API_TOKEN. Explicit shell export wins over .env; python-dotenv does not overwrite existing variables.

Helpers: sol_parser.env_config (parse_grpc_credentials, require_grpc_env, parse_shredstream_url, …), re-exported from sol_parser.

3. Smoke test

python examples/pumpfun_quick_test.py

Requires GRPC_URL (or GRPC_ENDPOINT) and (for most providers) GRPC_AUTH_TOKEN or GRPC_TOKEN in .env or the environment. You can pass credentials on the command line instead; see step 2.

4. Minimal gRPC subscribe + parse

import asyncio
import os

import base58

from sol_parser import parse_logs_only
from sol_parser.grpc_client import YellowstoneGrpc
from sol_parser.grpc_types import Protocol, SubscribeCallbacks, transaction_filter_for_protocols

async def main():
    endpoint = (
        os.environ.get("GRPC_URL", "").strip()
        or os.environ.get("GRPC_ENDPOINT", "").strip()
        or os.environ.get("GEYSER_ENDPOINT", "solana-yellowstone-grpc.publicnode.com:443")
    )
    token = (
        os.environ.get("GRPC_AUTH_TOKEN", "").strip()
        or os.environ.get("GRPC_TOKEN", "").strip()
        or os.environ.get("GEYSER_API_TOKEN", "")
    )

    client = YellowstoneGrpc(endpoint)
    if token:
        client.set_x_token(token)
    await client.connect()

    filter_ = transaction_filter_for_protocols([Protocol.PUMP_FUN, Protocol.PUMP_SWAP])
    filter_.vote = False
    filter_.failed = False

    def on_update(update):
        if update.transaction is None or update.transaction.transaction is None:
            return
        tx_info = update.transaction.transaction
        slot = update.transaction.slot
        logs = tx_info.log_messages
        if not logs:
            return
        sb = bytes(tx_info.signature) if tx_info.signature else b""
        sig = base58.b58encode(sb).decode("ascii") if len(sb) == 64 else ""
        events = parse_logs_only(
            logs, sig, slot, None, subscribe_tx_info=tx_info
        )  # tx_info from gRPC update — fills accounts from instruction keys
        for ev in events:
            print(ev)

    sub = await client.subscribe_transactions(
        filter_,
        SubscribeCallbacks(on_update=on_update, on_error=print, on_end=lambda: None),
    )
    print("subscribed", sub.id)

    try:
        await asyncio.Event().wait()
    except KeyboardInterrupt:
        pass
    await client.disconnect()

asyncio.run(main())

Lighter path: parse_logs_only(logs, …) only needs log messages from the update (no full wire transaction).

5. ShredStream (HTTP — not Yellowstone gRPC)

Python includes a native ShredStream client (ShredStreamClient, ShredStreamConfig) plus the same env/CLI helpers as Node (parse_shredstream_url: SHREDSTREAM_URL / SHRED_URL, --url / -u / --endpoint=). Install the optional extra with pip install 'sol-parser-sdk-python[shredstream]'. ShredStream uses its own endpoint, not GRPC_URL.

The Python ShredStream hot path uses strict static-account parsing by default. Supply loaded addresses or a slot-aware prewarmed-cache resolver for V0 ALT instructions; unresolved instructions are skipped. Legacy placeholders require the explicit parse_shred_transaction_best_effort API. Recognized wrapper/official routes emit PumpRouteIntent; raw shreds cannot reconstruct arbitrary CPI. Inner CPI/log-only events still require the Yellowstone/RPC paths.

Examples

From the package root after pip install -e .. Run with python examples/<file>.py. Scripts are written to mirror the output layout and env names of sol-parser-sdk/examples (Rust); streaming uses subscribe_transactions + parse_logs_only with the same program IDs as TransactionFilter::for_protocols in Rust.

Env: gRPC examples need GRPC_URL or GRPC_ENDPOINT, plus GRPC_AUTH_TOKEN or GRPC_TOKEN (or legacy GEYSER_*). See .env.example.

Protocols

PumpFun, PumpSwap, Raydium AMM V4 / CLMM / CPMM, Orca Whirlpool, Meteora DAMM V2 / DLMM, Raydium LaunchLab (see sol_parser/).

Useful exports

• parse_logs_only — log-based DEX events from gRPC log messages.
• format_dex_event_json / dex_event_to_jsonable — pretty-print DexEvent as indented JSON (one field per line); repr(ev) is the default dataclass single-line form, not JSON.
• YellowstoneGrpc — async Yellowstone gRPC client (connect, subscribe_transactions, disconnect).
• now_micros — microsecond clock (same role as Rust sol_parser_sdk::core::now_micros).
• transaction_filter_for_protocols / program_ids_for_protocols / account_filter_for_protocols — same program IDs as Rust Protocol + for_protocols in grpc/filter.rs.
• parse_grpc_credentials / require_grpc_env — load .env + env + CLI (aligned with sol-parser-sdk-nodejs grpc_env).

Advanced

Custom gRPC endpoint

import os

from sol_parser.grpc_client import YellowstoneGrpc

endpoint = os.environ.get("GRPC_URL") or os.environ.get("GRPC_ENDPOINT") or os.environ.get(
    "GEYSER_ENDPOINT", "solana-yellowstone-grpc.publicnode.com:443"
)
token = (
    os.environ.get("GRPC_AUTH_TOKEN")
    or os.environ.get("GRPC_TOKEN")
    or os.environ.get("GEYSER_API_TOKEN", "")
)
client = YellowstoneGrpc(endpoint)
if token:
    client.set_x_token(token)

Create + buy detection

parse_logs_only can detect create-and-buy patterns from program logs; see the PumpFun examples.

Project structure

sol-parser-sdk-python/
├── sol_parser/
│   ├── grpc_client.py          # YellowstoneGrpc (async connect / subscribe)
│   ├── env_config.py           # GRPC_URL, .env, CLI helpers (Node parity)
│   ├── clock.py                # now_micros()
│   ├── grpc_types.py           # TransactionFilter, SubscribeCallbacks, for_protocols helpers, …
│   ├── parser.py               # parse_logs_only, …
│   ├── geyser_pb2.py           # Generated proto (Yellowstone)
│   └── …
├── examples/
│   ├── pumpfun_trade_filter.py
│   ├── pumpfun_quick_test.py
│   └── …
├── .env.example
└── pyproject.toml

Development

pip install -e ".[dev]"
pytest tests/

License

MIT — https://github.com/0xfnzero/sol-parser-sdk-python

Contact

• Repository: https://github.com/0xfnzero/sol-parser-sdk-python
• Website: https://fnzero.dev/
• Telegram: https://t.me/fnzero_group
• Discord: https://discord.gg/vuazbGkqQE

API compatibility

Full cross-language API parity is still in progress. See the API migration guide for public behavior and support boundaries, and the examples directory for usage.

实时 parser → trade 接入使用 Yellowstone gRPC；见 gRPC 缓存接入与三语言示例。此路径不使用 WebSocket，报价和构建热路径不调用 RPC。

Shared PumpFun create/create_v2 mainnet fixtures, replay instructions and verification limits are documented in the validation guide.

Offline Pump ShredStream regressions

Pump route intents, strict cached ALT resolution and native signed replay/SBF simulation examples are documented in examples/offline_bank/README.md. Run the language-native examples and tests from this repository; no other-language test driver or RPC endpoint is needed. Unresolved instructions now skip by default; use the explicit best-effort API only for legacy behavior. Route intents must not be treated as confirmed fills.

Native offline CPU benchmark: python -m examples.hot_path_benchmark. examples/hot_path_benchmark.json fixes warmup and measured iterations for six signed wrapped-CPI/ALT transactions. Reported percentiles are per six-transaction batch; fixture decoding and I/O occur before timing. Parsing performs no RPC. Public wire-decoder dictionaries and resolver callbacks retain base58 strings; the internal ShredStream path avoids an instruction-data base58 round trip.