marblepyth

Python client for pulling Pyth Network price feeds into Marble Blockchain services — the DEX, wallet, and any contract that needs a real-time price reference instead of trusting a single exchange.

Pyth already backs the project's existing Solana bridge, so this reuses that same trust source rather than adding a new price oracle to audit.

What it does

• Subscribes to Pyth price feed accounts over Hermes (Pyth's off-chain price service) for the pairs Marble cares about (SOL/USD, MRBL/USD once listed, and whatever the DEX adds).
• Normalizes each update into a plain PriceUpdate (price, confidence interval, exponent, publish time) so callers don't touch raw Pyth account layouts.
• Exposes a small polling and streaming API so marble_dex_app.py and the wallet can ask for "latest price" or subscribe to a feed.

Install

pip install -r requirements.txt

Usage

from marblepyth import PythFeed

feed = PythFeed(["Crypto.SOL/USD"])
price = feed.latest("Crypto.SOL/USD")
print(price.price, "+/-", price.confidence)

Status

Early — the client wraps Pyth's Hermes REST/SSE endpoints today; a direct on-chain read path (for contracts that can't make HTTP calls) is planned once the Marble Blockchain VM supports it.