I have an existing Python-based trading bot wired to multiple brokerage APIs—Kotak, Zerodha (Kite Connect), Angel, Upstox and Interactive Brokers. Recent updates on the broker side have broken parts of the integration and the script now throws intermittent connection and order-routing errors. I need someone who already runs or maintains live broking bots to dive straight into the code, isolate the faults and restore fully automated trading within the next 48 hours. The stack is plain Python with REST and WebSocket calls plus a lightweight SQLite store. Your task is to: • audit the current API wrappers and authentication flow, • patch the failing endpoints or refresh deprecated calls, • run live session tests to prove that trade signals translate into successful orders across all five brokers, and • hand back the fixed, documented source along with a short changelog. I will grant temporary API keys for each broker and share sample strategies so you can replicate the issue in a sandbox. The job is complete when the bot executes orders flawlessly for at least one full market session without manual intervention. If you’ve previously integrated any of these broker APIs and can start immediately, let’s get this resolved.