connect_to_mechanical

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

No annotations are provided, so the description carries the full behavioral burden. It usefully discloses that the port changes every session, a genuine caveat, but says nothing about connection lifecycle (e.g., what happens if already connected), failure behavior, or required preconditions.

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 two short sentences with the main purpose front-loaded and the parameter note compactly appended. It wastes little space, though the 'Args:' fragment is slightly schema-like.

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?

An output schema exists, so return values need not be explained. However, for a connection-establishing tool with no annotations, key context such as prerequisites, connection persistence, and what constitutes success or failure is missing.

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?

Schema description coverage is 0%, so the description must compensate. It identifies the single parameter as 'the gRPC port of the Mechanical session' and warns it changes every session, which is meaningful, but it never says where the agent should obtain the current port value.

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 states a specific verb ('Connect to') and a specific resource ('the Mechanical session that holds your LS-DYNA system'), which is enough for an agent to understand what the tool does. It does not explicitly differentiate itself from siblings, though the opposite 'disconnect_from_mechanical' is self-evident.

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?

There is no when-to-use guidance, no mention of prerequisites (e.g., that a Mechanical session must already be running), and no routing to alternatives. The only implied usage is that connecting is a prerequisite for other Mechanical tools, which the description never states.

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