MCP J-Link Server

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It states it's a read operation, implying it's non-destructive, but doesn't address critical aspects like required permissions, connection state prerequisites, error conditions, or rate limits. The description is minimal and lacks behavioral context beyond the basic operation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is appropriately sized and front-loaded with the core purpose first, followed by parameter details. Every sentence adds value, with no redundant information. The structure is clear, though it could benefit from brief usage context.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (memory read operation with 3 parameters), no annotations, and an output schema present, the description is moderately complete. It covers parameter semantics well but lacks behavioral context and usage guidelines. The output schema likely handles return values, reducing the need for output description, but overall completeness is adequate with clear gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description adds significant semantic value beyond the schema, which has 0% description coverage. It explains each parameter: 'address' supports hex/decimal formats, 'num_units' is the count of units based on width, and 'width' specifies bit width with allowed values and default. This compensates well for the schema's lack of descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: '讀取目標晶片的記憶體' (Read target chip memory). It specifies the verb ('讀取' - read) and resource ('記憶體' - memory), making the function unambiguous. However, it doesn't explicitly differentiate from sibling tools like 'jlink_register_read' or 'rtt_read', which also perform read operations on different resources.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention sibling tools like 'jlink_register_read' (for registers) or 'rtt_read' (for RTT buffers), nor does it specify prerequisites such as requiring an active connection. Usage context is implied but not explicitly stated.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.