Single tool 'reflect_on_trial' has a basic schema with three required string/array parameters, but lacks critical depth. Description is present (67 chars) but generic, does not explain WHEN to use it, WHAT it returns, or HOW it guides agent behavior. Parameter descriptions are minimal (e.g., 'List of steps taken during the failed trial' lacks format/structure guidance). No output schema documented. No error handling guidance. Tool does one thing (reflection) but the interface is underspecified for LLM reasoning.

• Add formal output schema to tool definition: document that reflect_on_trial returns {trial_index: int, task_goal: string, root_cause: enum[logic_error|execution_timeout|missing_dependency_or_resource|formatting_or_syntax_flaw], critique: string}.
• Expand tool description to 100-150 chars: 'Analyzes a failed trial trajectory and generates a verbal self-reflection on root causes and corrective actions. Use after each agent failure to steer the next attempt. Returns structured critique with root_cause category and action plan.'
• Add format/structure guidance to trajectory_steps parameter: 'Array of step descriptions (strings) executed during the trial, in order. E.g., ["navigate_to_cart", "click_checkout_button"]. Required; empty array defaults to "initialization".'
• Document error handling: 'If trajectory_steps is empty, root_cause defaults to logic_error. If error_message is blank, critique will note missing error context. Ensure error_message is non-empty for accurate root-cause classification.'
• Migrate from STDIO to HTTP+SSE or Streamable HTTP transport to enable remote client access and improve protocol readiness score.