Omnibook Python SDK

Official Python client for the Omnibook prediction market exchange. Sign up, create an API key, install this package, and trade.

pip install omnibook

from omnibook import Client

client = Client(api_key="<alphanumeric-api-key>", api_secret="<64-char-hex-secret>")

status = client.get_exchange_status()
rounds = client.get_rounds(limit=5)
order = client.place_order(
    client_order_id="42",
    market_id=66,
    side="buy",
    outcome="yes",
    type="limit",
    tick=47,
    qty=10,
    tif="gtc",
    post_only=True,
)

Prerequisites

  1. Sign in at omnibook.xyz.
  2. Deposit USDC (bot keys cannot withdraw).
  3. Create a key under Settings → API keys. Copy the API key and secret (the secret is shown once).

Docs: docs.omnibook.xyz/sdk/python

Environments

Env REST WebSocket
Production (default) https://api.omnibook.xyz wss://api.omnibook.xyz/v1/ws
Local http://127.0.0.1:9104 ws://127.0.0.1:9105/v1/ws 
client = Client(
    api_key="...",
    api_secret="...",
    base_url="http://127.0.0.1:9104",
    ws_url="ws://127.0.0.1:9105/v1/ws",
)

Sync and async

from omnibook import Client, AsyncClient

# Sync
with Client(api_key=..., api_secret=...) as client:
    print(client.get_balance())

# Async
async with AsyncClient(api_key=..., api_secret=...) as client:
    print(await client.get_balance())

WebSocket

from omnibook import Client

with Client(api_key=..., api_secret=...) as client:
    with client.websocket() as ws:
        ws.subscribe(channels=["rounds", "oracle", "user"])
        replies = ws.subscribe(channels=["orderbook_delta", "trades"], market_ids=[66])
        sid = replies[0]["sid"]
        # Re-emit snapshots without changing the market set / sid seq:
        ws.update_subscription(sid=sid, action="get_snapshot", market_ids=[66])
        for msg in ws:
            print(msg)

Auth note

Every request is HMAC-SHA256 signed. Settings hands you a 64-character hex secret (32 raw bytes). Pass that string (or a legacy base64 secret) to api_secret — the SDK hex-/base64-decodes it to the raw HMAC key for you.

Tests

pip install -e ".[dev]"
pytest                     # unit tests (mocked)
OMNIBOOK_RUN_INTEGRATION=1 \
  OMNIBOOK_API_KEY=... \
  OMNIBOOK_API_SECRET=... \
  pytest -m integration    # live venue

License

MIT

Project links

Data verified by PyPI on Jul 31, 2026
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Key dates

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1 maintainer

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Credits

Author: Raeth AI

GitHub Statistics

Data verified by PyPI on Jul 31, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
View SPDX License List

Requires

Python >=3.10

Provides Extra

dev

Tags

exchange omnibook prediction-markets sdk trading

Classifiers

Report project as malware

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