ThinkorSwim-Python FIFO Bridge Implementation

I need someone to successfully implement a named pipe FIFO bridge between ThinkorSwim TOS and Python on macOS.

1. Core Technical Skills
A. ThinkorSwim TOS. Expertise
thinkScript Mastery:

Ability to modify TOS strategies to write signals via scriptwriteFile.

Handling edge cases e.g., duplicate signals, formatting for FIFO.

TOS Sandbox Workarounds:

Knows how to bypass macOS sandbox restrictions e.g., saving files to LibraryCaches.

B. macOS Systems Programming
Unix Named Pipes FIFO:

Creation, permissions mkfifo, chmod, and stability fixes.

Handling blocking non-blocking reads writes.

macOS Security:

Granting TOS Full Disk Access System Preferences Security & Privacy.

Debugging sandbox-related crashes.

C. Python Development
File Monitoring

watchdog library or polling for real-time file changes.

Alpaca TD Ameritrade API

Order execution, error handling, rate limits.

2. Low-Latency Optimization
RAM Disk Setup:

Mounting a RAM disk for ultra-fast I/O:

bash
Copy
diskutil erasevolume HFS+ 'TOS_RAM' $hdiutil attach -nomount ram://2048
Signal Deduplication:

Tracking the last executed signal per symbol e.g., using Python dict or SQLite.

Benchmarking:

Measuring latency from TOS signal to Python to Alpaca execution.

3. Debugging & Stability
Error Handling:

Logging pipe failures, API errors, and retries.

Crash Recovery:

Auto-restarting Python scripts e.g., using launchd on macOS.

Testing:

Simulating signals with echo AAPL,BUY,150 ~/tos_pipe.fifo.

WebSockets:

For real-time Alpaca order updates.

Understands scalping/HFT requirements (e.g., slippage, order types).

Provides clear setup guides for macOS permissions.