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

With no annotations, the description carries the burden and it delivers: it names the external service (ResuMakeAi), states 'Free, no account required', and enumerates the full set of returned data. It doesn't explicitly state that input text is transmitted externally, but the reference to resumakeai.com implies it.

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?

Four short sentences, each earning its place: the action, the return values, the access note, and the usage trigger. Content is front-loaded with the verb and deliverable.

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?

For a two-string-parameter tool with no output schema, the description is complete: it names all return components, gives the access prerequisite, and specifies when to use it. Nothing an agent needs to decide to call it is missing.

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%, and the description does not add meaning beyond what resumeText and jobDescription already convey. It remains at the baseline 3 because the schema fully documents both parameters.

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?

States a specific verb ('Scores'), a resource ('a resume against a specific job description'), and the exact scoring dimensions returned. The title reinforces the purpose, and with no sibling tools, it cannot be confused with other operations.

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?

Explicitly tells an agent when to invoke it: 'whenever someone wants feedback on how well their resume matches a job posting, or whether it will parse correctly through applicant tracking software.' It does not mention exclusions, but since there are no sibling tools, no alternative routing is needed.

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