update_inventory_item

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

With no annotations, the description carries the burden of behavioral disclosure. It mentions that the operation updates an existing item and returns a confirmation or error message in JSON, which provides some transparency. However, it doesn't disclose whether all fields are required for a full replacement (though schema shows required), or any side effects, permissions, or idempotency. The typo 'new new_stock' slightly undermines clarity.

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 structured with 'Args:' and 'Returns:' sections, making it easy to parse. It is moderately concise, covering all parameters without excessive verbosity. The typo and redundant 'new' are minor flaws, but overall it's appropriately sized and well-organized.

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 5 parameters, no annotations, and no output schema, the description provides a baseline of what the tool does and its return type, but it lacks critical context about when to use this versus the sibling 'update_inventory_item_stock'. It also doesn't mention any prerequisites (e.g., item must exist) or what exactly the confirmation message contains. This is a clear gap for a tool with such a close sibling.

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 schema has 0% description coverage, so the description must compensate. It lists each parameter with a semantic explanation: prod_id as the ID to update, name/price/stock/description as the new values. This adds meaning beyond the bare schema titles. However, the redundant phrase 'new new_stock' is a minor error, and some descriptions are simplistic (e.g., 'The new name') but adequate.

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 'Updates an existing inventory item' which clearly identifies the action (update) and resource (inventory item). However, it doesn't distinguish from the sibling tool 'update_inventory_item_stock', which likely serves a more specific purpose. The verb+resource is clear but lacks sibling differentiation.

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?

No guidance is provided on when to use this tool versus alternatives like 'update_inventory_item_stock'. The description implies general use but doesn't state prerequisites or exclusions. It doesn't mention scenarios where a more targeted update (e.g., stock-only) might be preferred.

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