UltraThink Debugger

Overview

The UltraThink Debugger is an advanced, deep-dive debugging agent engineered for the most challenging software defects. It moves beyond surface-level error reporting by systematically tracing execution paths three or more levels deep.

This tool excels when bugs are non-deterministic, involve complex asynchronous interactions (like race conditions), or stem from subtle state machine violations across multiple interacting systems.

Capabilities

• Deep Call Stack Tracing: Traces dependencies 3+ layers deep to find the true point of failure.
• Concurrency Simulation: Simulates various timing scenarios and checks for thread/event race conditions.
• State Invariant Checking: Verifies that the application state remains valid at every critical step of execution.
• Asynchronous Analysis: Specifically examines event loop order, microtask scheduling, and improper await usage.
• Comprehensive Reporting: Provides fixes backed by detailed citations (file:line) after exhausting all alternative explanations.

Example Use Cases

• Flaky Tests: When a test passes sometimes but fails others due to timing, this agent can isolate the probabilistic trigger.
• API Integration Bugs: Debugging issues where two microservices interact asynchronously and one call unexpectedly corrupts shared state.
• Complex State Machines: Pinpointing why an object enters an invalid state after a sequence of seemingly correct method calls.

Use this agent when standard debugging tools return 'INCONCLUSIVE' or when you suspect the issue lies in timing, concurrency, or deep interaction layers.