calesthio/OptionsCanvas

v0.1.10 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 6d Self-Hosted

View tool

✓ No known CVEs patched

Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

0dte algorithmic-trading alpaca charting day-trading fintech

+9 more

flask lightweight-charts local-first options options-trading python self-hosted trading-platform vanilla-js

Affected surfaces

breaking_upgrade

Summary

AI summary

Daemon thread enforces stop‑loss and take‑profit checks every 2 seconds regardless of browser state.

Changes in this release

Type	Severity	Summary	CVE
Feature	Low	Market-hours gating skips broker calls outside regular trading hours (9:30–16:00 ET). Market-hours gating skips broker calls outside regular trading hours (9:30–16:00 ET). Source: granite4.1:30b@2026-05-29-audit Confidence: low	—
Feature	Low	At market open, a sweep checks all positions for overnight gap protection. At market open, a sweep checks all positions for overnight gap protection. Source: granite4.1:30b@2026-05-29-audit Confidence: low	—
Bugfix	High	Stop loss and take profit checks now run independently of browser state every 2 seconds. Stop loss and take profit checks now run independently of browser state every 2 seconds. Source: llm_adapter@2026-05-29 Confidence: high	—

Full changelog

Critical: stops no longer depend on the browser being open

Before this release, check_stop_loss() and check_take_profit() ran only inside the /api/position HTTP handler — so stops only checked when the browser was actively polling. A closed tab, throttled background tab, sleeping laptop, or brief network blip silently disabled stop protection. The whole "your stops live locally, off the broker book" promise relied on the browser being awake.

The fix

A daemon thread spawned at server start that calls:

trading_engine.process_pending_orders()
trading_engine.check_stop_loss()
trading_engine.check_take_profit()

every 2 seconds, unconditionally, for as long as the server is up. Browser state no longer matters to stop enforcement.

Market-hours gating

The loop ticks at 2s cadence 24/7 (it's cheap) but skips broker calls outside RTH (9:30–16:00 ET) since a market sell can't fill on a closed market. Open/close transitions log a single line each — no log spam.

Overnight gap protection: at the 9:30 open, the very first tick sweeps every position immediately. If your underlying gapped through your SL overnight, it fires within 2 seconds of the bell — not whenever the browser happens to reconnect.