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chart

FastAPI backend + Vue 3 (from CDN, no build step) served at https://chart.amow.com.

The app charts Yahoo's ES=F feed, builds CME-session-aware timeframes and daily moving averages, and alerts on confluence zones. The full spec lives in docs/IMPLEMENTATION_PLAN.md — read it before writing code; it records decisions and verified API facts that are expensive to rediscover.

Local development

docker compose up --build

Then open http://localhost:8010. Override the host port with, for example, PORT=8020 docker compose up. The port binds to all host interfaces, so another machine can connect at http://HOST_IP:8010. The source tree is bind-mounted and uvicorn runs with --reload, so edits to main.py or static/ take effect without a rebuild. Rebuild only when requirements.txt changes.

The Compose stack also includes Playwright for browser screenshots. It reaches the app over the internal Compose network and writes ignored artifacts locally:

docker compose exec playwright playwright screenshot \
  --lang en-US --wait-for-timeout 5000 http://api:8000 /artifacts/chart.png

Without Docker:

python3 -m venv .venv && . .venv/bin/activate
pip install -r requirements.txt
uvicorn main:app --reload

Copy settings from .env.example as needed. To recalibrate the alert threshold against Yahoo's current eight-day minute tape:

python3 -m scripts.calibrate_alerts

The M4 calibration on 2026-08-09 replayed 8,065 minute bars across seven sessions. Threshold 12 generated 210 alerts from lone daily MAs; 24 and the selected 28 generated none. The selected threshold deliberately requires at least three clustered daily MAs (score 36) and should be revisited as more varied tapes are recorded.

Layout

Path Purpose
main.py FastAPI lifespan and app wiring; JSON under /api, SPA at /
app/ Market sources, aggregation, analysis, alerts, and API
static/ index.html, app.js, style.css — Vue 3 loaded from unpkg
requirements.txt Python deps
Procfile Start command; nixpacks needs this or the deploy has nothing to run
Dockerfile.dev, docker-compose.yml Local dev only — production does not use them

Deployment

Push to main → Forgejo webhook → Coolify rebuilds with nixpacks → live in roughly 25 seconds.

git push

Two things to know before changing the deploy config:

  • The Coolify domain is registered as https://chart.amow.com:8000. The port suffix is how Coolify decides the Traefik target port; drop it and every request 502s while the container looks perfectly healthy. It does not appear in the public URL.
  • Ignore a 502 in the first minute after a deploy — that's the rolling container swap, and it clears on its own.

Manual redeploy:

curl -X POST -H "Authorization: Bearer $(cat ~/.coolify-token)" \
  "http://127.0.0.1:8000/api/v1/deploy?uuid=dgvch0xqv8uvjfor7dl8bwl9&force=true"