QuantTrade

Local-first quantitative backtesting on Coolify: Streamlit UI, VectorBT engine, Parquet market data, nightly Yahoo Finance sync, in-app Authentik OIDC, and SQLite strategy persistence.

Architecture

Layer	Technology
Auth	Authentik OIDC inside Streamlit (OIDC_CLIENT_SECRET in app env)
UI	Streamlit (streamlit service, port 8501)
Engine	VectorBT + NumPy
Market data	Parquet volume (parquet-data)
Ingestion	harvester cron @ 17:00 America/New_York (weekdays)
Strategies	SQLite on strategy-data volume, keyed by OIDC username
Telemetry	Bugsink via sentry-sdk (bugsink.aexoradao.com)

Coolify deployment

1. Create a Docker Compose resource pointing at this repo.
2. Assign your public domain to the streamlit service on port 8501.
3. Do not enable Authentik forward auth on the Coolify proxy for this app — login happens inside Streamlit.
4. Set environment variables in Coolify:
   • OIDC_CLIENT_SECRET — required; copy from your Authentik provider
   • OIDC_CLIENT_ID — Authentik provider slug (default quant-web)
   • OIDC_ISSUER — Authentik issuer URL for the provider
   • OIDC_REDIRECT_URI — optional; defaults to SERVICE_URL_STREAMLIT_8501
   • BUGSINK_DSN — DSN from your Bugsink project
   • AUTH_REQUIRED — keep true in production
   • DEV_USER — only when AUTH_REQUIRED=false for local testing

Coolify note: if you change any default after the first deploy, update the value manually in Coolify UI > Environment Variables.

Authentik provider setup

In Authentik, create an OAuth2/OIDC provider for this app:

1. Client type: Confidential
2. Client ID: quant-web (or match OIDC_CLIENT_ID)
3. Client secret: paste into Coolify as OIDC_CLIENT_SECRET
4. Redirect URIs: your public app URL, e.g. https://quant.example.com
   • Must match OIDC_REDIRECT_URI or the Coolify-generated SERVICE_URL_STREAMLIT_8501
5. Signing key: RS256 (Authentik default)

Users hit the app → Streamlit redirects to Authentik → callback with auth code → app exchanges code using OIDC_CLIENT_SECRET → userinfo drives strategy ownership.

Services

• data-seed — one-shot 5-year historical download into Parquet (idempotent).
• harvester — cron container; appends daily bars after US cash close.
• streamlit — dashboard, OIDC login, backtests, save/load strategies.

Local development

cp .env.example .env
# Set AUTH_REQUIRED=false and DEV_USER for local testing without Authentik
python -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt
python sync.py --seed
streamlit run app.py

For full OIDC locally, set OIDC_CLIENT_SECRET and register http://localhost:8501 as a redirect URI in Authentik.

Research workflow

1. Backtest — run a single parameter set and inspect equity curve, drawdown, trades.
2. Optimize — exhaustive parameter scan (grid search) ranked by Sharpe, Sortino, return, or drawdown.
3. Python — view builtin source or author custom strategies with generate_signals().
4. Library — save/load strategies per user (SQLite), including custom Python source code.

Custom Python strategy contract

PARAM_GRID = {"fast_window": list(range(10, 41, 5)), "slow_window": list(range(50, 151, 10))}
DEFAULT_PARAMS = {"fast_window": 20, "slow_window": 50}

def generate_signals(close, high, low, volume, **params):
    # return boolean entry/exit Series aligned to close
    return entries, exits

Builtins: ma_crossover (vectorized VectorBT comb scan), rsi_reversion (grid scan).

Docker build speed

• Harvester image installs only requirements-harvester.txt (no VectorBT/Streamlit).
• App image uses BuildKit pip cache (RUN --mount=type=cache).
• .dockerignore keeps git/cache out of build context.

Enable BuildKit on Coolify/build host for cache mounts.

python sync.py --seed    # full history
python sync.py --daily   # append latest bars

Strategy storage

SQLite path: /data/strategies/strategies.db (Docker volume strategy-data). Each row stores username, name, ticker, and JSON parameters (MA windows, cash, fees).

Bugsink

Set BUGSINK_DSN to your project DSN, e.g.:

http://<public-key>@bugsink.aexoradao.com/<project-id>

Both app.py and sync.py initialize the Sentry-compatible SDK with tracing disabled for Bugsink compatibility.