This is a sample/educational server with mixed quality. The simple math and greeting tools (greet, add, subtract, multiply, divide, tell_joke) are well-structured with complete schemas and clear descriptions (194-character baseline met). However, the browser automation tools (browser_session, execute_parallel_browser_tasks, stop_browser_session, get_browser_session_status) have significant gaps: incomplete descriptions, vague action parameters, and no output schema documentation. The 'actions' parameter in browser_session is a free-form string array with minimal guidance on format or constraints, LLMs will struggle to compose valid action sequences without examples or an enum of valid action types. Error handling is absent across all tools; there is no guidance on retryability, user-fixable vs. fatal conditions, or recovery steps. The server is STDIO-only (fastmcp run() with no explicit HTTP transport), which caps protocol readiness at 50 and makes it unsuitable for production hosted deployments.

• Define a strict schema for 'actions' parameter in browser_session and execute_parallel_browser_tasks. Either: (a) declare an enum of valid action types (e.g., 'click', 'fill', 'navigate', 'wait'), or (b) provide a structured object schema with 'action' (string), 'selector' (string), 'value' (optional string), 'max_steps' (optional integer). Document the expected format in the parameter description with an example.
• Add complete output schema documentation for browser_session, execute_parallel_browser_tasks, stop_browser_session, and get_browser_session_status. Specify all returned fields, their types, and what they represent. Example: 'Returns object with fields: task_id (string), status (enum: running|success|failed), results (array of {action, response, final_url}), error_message (optional string)'.
• Add error handling to all tools: (a) document which errors are retryable (e.g., timeout, connection failed) vs. user-fixable (e.g., invalid action syntax) vs. fatal (e.g., browser crash); (b) return actionable error messages that include the invalid value, the constraint violated, and a suggestion for recovery.
• For divide tool, update the description to explicitly mention: 'Raises ValueError if denominator is zero. LLMs should catch this and suggest alternative calculations or check inputs beforehand.'
• Rename tell_joke to get_joke or generate_joke to align with verb-first naming convention (Arcade baseline: 90% of A+ tools start with action verbs).
• Complete the truncated description text in browser_session (currently ends with 'Break complex tasks into sma') and remove redundant guidance already stated in parameter descriptions.