This is from my Claude to your Claude based on the code. This should get you started.
Here's a clean Claude-to-Claude build prompt:
Build a Python/Tkinter desktop app called "NT8 Trading Control Hub" for Windows. Here's the full spec — avoid all pitfalls listed at the bottom.
What it does: GUI control panel that manages a local Flask webhook server (receives TradingView alerts) and a Cloudflare tunnel (exposes it publicly), then forwards signals to NinjaTrader 8 via its ATM strategy system.
Stack: Python, Tkinter ttk, subprocess, threading, requests, json
5-tab Notebook UI:
Control tab — START/STOP buttons, 4 status indicators (Webhook Server, Tunnel, NT8 Connection, Web Access), scrolling activity log
Tunnel Setup tab — Cloudflare login button, tunnel name entry, Create Tunnel button, UUID display (readonly), Generate Config.yml button
Settings tab — NT8 account name, default ATM strategy name, flatten-before-entry checkbox, dynamic symbol mapping table (TradingView symbol → NT8 instrument, add/delete rows), Save button
Testing tab — symbol input, BUY/SELL dropdown, Send Test Webhook button, response viewer
Console tab — raw server stdout log
Config stored in webhook_config.json next to the app. Defaults:
{
"webhook_secret": "your_secret_here",
"nt8_account": "Sim101",
"atm_strategy": "MyATMStrategy",
"server_port": 5002,
"flatten_before_entry": false,
"domain": "
yourdomain.com",
"subdomain": "nt8",
"tunnel_name": "nt8-webhook",
"tunnel_uuid": "",
"symbol_mappings": {
"ES1!": "ES 09-26",
"NQ1!": "NQ 09-26"
}
}
Paths (Windows):
App lives in ~/NT8WebhookBridge/
Server script: nt8_webhook_server.py in that folder, run via venv/Scripts/python.exe
cloudflared: C:\cloudflared\cloudflared.exe, config at C:\cloudflared\config.yml
Status polling every 5 seconds via root.after(). Web Access check hits https://{subdomain}.{domain}/status. Only log status changes or once per minute to avoid log spam. Track last_status_state tuple and last_log_time to throttle.
Test webhook POSTs {"secret":..., "symbol":..., "action":..., "quantity":1} to http://localhost:5002/webhook
Known pitfalls — avoid these:
Do NOT use Python markdown link syntax anywhere (e.g. never write
self.map_inner as [
self.map](url)_inner) — this is a pure Python file, no markdown
Tunnel and server processes use subprocess.Popen with stdout=PIPE, stderr=STDOUT, text=True — read server output on a daemon thread to avoid blocking
Status labels use .config(text=..., foreground=...) — set both every cycle or stale color persists
mapping_rows is a list of dicts {"tv": StringVar, "nt8": StringVar, "frame": Frame} — delete by filtering on frame identity, then call frame.destroy()
save_all_settings rebuilds symbol_mappings from mapping_rows before calling save_config()
Status bar at bottom: pack with side='bottom', fill='x' BEFORE the notebook or it gets hidden
Yes, this is actually the more critical piece — it contains the NT8 ATI integration which is the hardest part to figure out. Here's an addendum to paste as the next reply in the thread:
Part 2 — The Flask Webhook Server (nt8_webhook_server.py)
This is the harder part. It uses pythonnet (clr) to load NT8's ATI DLL directly — no TCP socket hacks.
Install: pip install flask flask-cors pythonnet
DLL Integration:
import clr, sys
NT8_PATH = r"C:\Program Files\NinjaTrader 8\bin"
sys.path.append(NT8_PATH)
clr.AddReference("NinjaTrader.Client")
from NinjaTrader.Client import Client
client = Client()
Place order command signature (exact arg order matters):
client.Command("PLACE", account, symbol, action, qty,
"MARKET", 0, 0, "DAY", "", "", atm_strategy, "")
Flatten before entry:
client.Command("CLOSE", account, symbol, "BUY",
0, "MARKET", 0, 0, "DAY", "", "FLATTEN", "", "")
time.sleep(0.3) # NT8 needs a moment
Return code 0 = rejection (bad symbol or NT8 not ready). Any nonzero = accepted.
Two routes:
POST /webhook — validates secret, maps TV symbol → NT8 instrument via config, calls place_order()
GET /status — returns {"nt8_connected": bool, "account": "..."} (used by the GUI health check)
Webhook payload expected:
{"secret": "...", "symbol": "ES1!", "action": "BUY", "quantity": 1}
atm_strategy is optional in payload — falls back to config default.
Known pitfalls:
pythonnet version matters — use pythonnet==3.0.3, not 2.x (different clr import behavior)
NT8 must be running AND the ATI connection enabled under Tools → Options → Automated Trading Interface → "AT Interface"
Symbol must exactly match NT8's instrument name including expiry (e.g. ES 09-26) — mismatch returns code 0 silently
Reload config on every request (one config.load() call) so GUI settings changes apply without restart
Run Flask on 0.0.0.0 not 127.0.0.1 — Cloudflare tunnel needs it bound to all interfaces
flask-cors required or browser-based senders get blocked
Together the two replies give someone everything needed to build this cold.
Your questions are always welcome!