Mixed quality across 45 tools. Strengths: most tools have descriptions (mostly bilingual EN/ZH), clear naming with action verbs (list_, connect_, read_, write_, etc.), and defined input schemas for majority of tools. Critical weaknesses: (1) descriptions are inconsistent in detail and LLM optimization; (2) many parameter descriptions lack constraint detail (ranges, enums, allowed values); (3) no visible output schema documentation; (4) error handling guidance is minimal; (5) several tools have minimal or generic descriptions (<50 chars); (6) no visible per-parameter type validation hints. The server trades breadth (45 tools covering embedded debugging domain thoroughly) for depth (incomplete parameter specifications and missing output schemas). Average tool score ~52 reflects this balance.

• Expand minimal descriptions to 50 - 200 chars: Replace 'Get CPU state / 获取 CPU 状态.' with 'Query the CPU execution state (running, halted, stepping). Returns state code and reason. Call this after reset_target or halt_cpu to verify the operation succeeded.'
• Document output schemas for all tools: Add explicit 'Returns' section to each tool docstring. E.g., 'list_jlink_devices returns list of {serial_number: str, product_name: str, connection_type: str, index: int}'. This enables confident field extraction.
• Add constraint details to parameter descriptions: 'address: 32-bit hex address (0x00000000 - 0xFFFFFFFF) for the target MCU memory space' instead of just 'Start address'. For 'size', add '1 - 65536 bytes'.
• Add error recovery guidance to destructive operations: 'erase_flash: If timeout occurs, verify power supply to target, call get_target_voltage to confirm, then retry. If still fails, call diagnose_environment for detailed logs.'
• Annotate tool risk levels via toolAnnotations in schema: Mark erase_flash, program_flash, write_memory, write_register with destructiveHint: true. Mark reset_target, halt_cpu, run_cpu with idempotentHint: true. Mark read_* tools with readOnlyHint: true.
• Clarify parameter relationships: For erase_flash, document that chip_erase=true ignores start_address/end_address, or all three are mutually exclusive.
• Add dependency hints to tool descriptions: 'connect_device: Call list_jlink_devices first to discover available devices and their serial numbers.' 'program_flash: Requires active connection via connect_device and target halted (call halt_cpu if needed).'