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

The readOnlyHint annotation is present, and the description ('inspects') is consistent with it, so no contradiction. However, the description adds no behavioral detail beyond the annotation itself—no mention of return format, error conditions, or side effects, which would be valuable even with the annotation.

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 extremely concise—a single clause—and front-loads the core action. It earns its place with no filler. However, it may be overly terse, lacking any secondary context that would improve usability.

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 simplicity of the tool (2 params, read-only, output schema present), the description is minimally adequate. It clearly names the operation, and the schema fills in parameter details. But it does not explain what 'attributes' are used for or what the output contains, which leaves some 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?

Schema description coverage is 100%—both 'model' and 'attributes' have descriptions in the input schema. The description adds no extra meaning to the parameters, so the baseline score of 3 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 states a specific verb and resource ('Inspects the fields of a model'), which clearly distinguishes it from sibling tools like odoo_list_models (lists models) and odoo_read (reads records). However, it does not explicitly contrast with those siblings, and the purpose could be slightly more precise (e.g., 'field definitions' instead of just 'fields').

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 guidance on when to use this tool versus alternatives such as odoo_list_models or odoo_execute. The one-line description implies a usage context but provides no exclusions or conditions for selection.

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