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

With no annotations provided, the description carries the burden of disclosing behavior. It mentions comparison and optional filtering, but does not disclose whether the operation is read-only, whether any side effects occur, what the return format is, or any access requirements.

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 only one sentence but is awkwardly structured and reads like a fragment ('...systems comparison...'). It is not front-loaded clearly, and the title 'The options' is unhelpful. A clearer, more direct rewrite would earn a higher score.

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 no output schema and no annotations, the description should explain return contents and calling context more fully. It lists comparison fields and a filter option, but leaves filterKey semantics unclear and does not describe the result format or any limitations.

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 explain the parameters. It mentions 'filtered by a tag value,' which likely relates to filterValue, but it does not explain filterKey or how the two parameters interact. The parameter semantics are incomplete.

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 identifies the resource as 'options' in UK housebuilding snagging/defect management systems and indicates a comparison function with fields (name, best for, tags). This is distinguishable from siblings like compare_criteria and compare_table, though the phrasing is malformed and the title 'The options' adds nothing.

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?

The description implies usage when comparing options and mentions optional filtering by tag value, but it gives no explicit guidance about when to choose this tool over compare_criteria or compare_table. No alternatives are named or excluded.

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