pcb_ping

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

No annotations are present, so the description must carry the full behavioral burden. It discloses that the tool performs a status check, but it does not say what response to expect, whether the call is purely read-only, or how failures are signaled. This is a meaningful gap for a tool with no output schema.

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 a single front-loaded phrase that names the action and the target with no filler or repetition. It is appropriately sized for a parameterless health-check tool, though it could have added a bit more 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?

For a simple zero-parameter ping tool, the description is nearly sufficient: an agent can identify and invoke it without constructing arguments. However, 'bridge' is left somewhat ambiguous and the expected result/return value is not described, so the description is not fully self-sufficient in the absence of an output schema.

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 tool has zero parameters and 100% schema description coverage, so the schema already exhaustively documents the inputs. The description adds no parameter details, and none are needed; for a zero-parameter tool the baseline score of 4 applies.

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 uses a specific verb ('检查' / check) and a specific target ('bridge 连接状态' / bridge connection status), so an agent can tell this is a bridge connectivity health check rather than a design-editing operation. It does not explicitly contrast with sibling tools, but none of the siblings cover bridge status, so the purpose is distinct enough.

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?

Usage is implied: call this tool when you need to verify whether the bridge connection is alive, as 'ping' in the tool name also suggests. There is no explicit guidance on when not to use it or what alternative to prefer, but no sibling appears to be a direct alternative.

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