Chapaty Environments

This dataset repository hosts the pre-compiled financial environments for Chapaty, a Rust library for reinforcement learning in financial markets.

Inspired by OpenAI Gymnasium, these datasets provide standardized, easily reproducible simulation states for training and backtesting agents.

What are these files?

The datasets here are serialized using .postcard (a highly efficient binary format for Rust). They contain environment configurations based on the version of the crate you are using.

Versioning

This repository uses branches to align with Chapaty crate releases (e.g., v1.1.0). When you use Chapaty in Rust, the library automatically binds to the correct branch matching your crate version, ensuring your agents are always evaluated on consistent data.

Usage in Rust

Fast Track: Use the Chapaty Starter Template to instantly bootstrap a new project. It includes pre-configured AI prompts for backtesting with a LLM of your choice, built-in dashboard setups with Quantstats, and best-practice strategy examples.

You do not need to download these files manually. Use the Chapaty crate to load them directly into your async Rust application:

use anyhow::{Context, Result};
use chapaty::prelude::*;

#[tokio::main]
async fn main() -> Result<()> {
    // Select a preset (e.g., Daily BTC/USDT with SMA 20 & 50)
    let preset = EnvPreset::BinanceBtcUsdt1dSma20Sma50;
    
    // Configure I/O to fetch seamlessly from Hugging Face
    let file_stem = preset.to_string();
    let loc = StorageLocation::HuggingFace { version: None };
    let cfg = IoConfig::new(loc).with_file_stem(&file_stem);

    // Load the environment (downloads and caches locally on first run)
    let mut env = chapaty::load(preset, &cfg)
        .await
        .context("Failed to load trading environment")?;
        
    println!("Successfully loaded environment for {}!", preset);
    
    Ok(())
}

Available Presets

Presets encode exact data source IDs to reproduce identical environments. Current presets include:

• binance_btc_usdt1d: BTC/USDT Daily Spot
• ninja_trader_cme6eh6_1m_5m_us_emp_high: EUR/USD 1m/5m Futures with US Employment News
• binance_btc_usdt1h_1m_volume_profile1d_100_usdt: BTC/USDT Multi-resolution Spot with Volume Profile
• (And many more—see the Chapaty Crate Documentation for the full EnvPreset list).

Disclaimer

Trading and investing involve substantial risk. You may lose some or all of your capital. These datasets and the Chapaty library are provided for research and educational purposes only and do not constitute financial advice.