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

With no annotations, the description carries the burden and does well by disclosing fail-explicit behavior ('returns the exact per-line issues, never a silently-dropped row') and the return payload (load plan + container manifest). It doesn't cover side effects or permissions, but for an import/parse operation this is reasonably transparent.

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?

Two sentences, front-loaded with the core purpose, and every clause adds value. No repetition of schema or annotations.

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?

The tool has one nested parameter and no output schema, so the description compensates by stating the output ('load plan + container manifest') and the failure mode. It could state more about the output structure or prerequisites, but it's sufficient for an agent to use the tool correctly.

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 100%, so the schema already documents the packingList object thoroughly. The description adds contextual flavor ('WMS/ERP export' and versioned) but does not significantly expand upon the schema's parameter definitions.

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 function: take a versioned 'loadingmcp.packing-list' document and return a load plan and container manifest. The verb 'take' and resource are explicit, and it distinguishes itself from siblings by being the 'ERP/TMS on-ramp'.

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?

It provides clear context for when to use ('ERP/TMS on-ramp') and explicitly references sibling tool plan_load for a full round-trip. However, it doesn't explicitly state when not to use it or alternative scenarios.

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