credit_improvement_tips

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

Annotations already declare readOnlyHint=true, and the description adds no additional behavioral details such as data sensitivity, rate limits, or side effects. The term 'Generate' implies a read-only operation, but the description fails to disclose any traits beyond what is already captured in annotations.

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 concise with two sentences plus a parallel reference. The 'DEMO educational content' note adds a minor distraction but does not significantly harm conciseness. Nearly every sentence serves a purpose.

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 full schema coverage, output schema existence, and clear purpose, the description is nearly complete. It could mention output format briefly, but the output schema already covers that. The context is adequate 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 defines all four parameters with descriptions. The tool description adds no extra meaning or nuance to the parameters, resulting in baseline score of 3.

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 'Generate actionable credit improvement tips personalised to the user's situation', specifying a distinct verb and resource. It is easily distinguished from siblings like 'credit_report_summary' (summary) and 'loan_eligibility' (eligibility), which address different needs.

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 Western parallel to Credit Karma provides a useful analogy for when to use the tool. However, it lacks explicit guidance on when not to use it or how it compares to alternatives, missing the high bar of explicit exclusions and context.

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