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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, openWorld), and the description adds substantial behavioral context beyond them: the R0–R3 scoring range, the v0.1 checker version, the explicit limitation that R4 is never awarded and certified is never set, the 'R4 candidate · not verified' hint semantics, and the side effect that a saved report yields a public result URL. This is exactly the kind of constraint disclosure annotations cannot carry.

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, all front-loaded with the core action first and constraints after. Each sentence carries information, though the terse score-range jargon ('R0 through R3', 'R4 candidate · not verified') assumes familiarity and could read as cryptic without prior context.

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?

There is no output schema, so the description must cover return semantics, and it does so reasonably: it names the score range, the never-awarded R4 ceiling, and the public result URL. It stops short of describing the response shape or fields, leaving a small gap for a tool with no structured output contract.

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?

With one parameter and 100% schema description coverage, the schema already documents the url field ('Public website URL to score'). The description restates the same constraint ('public http(s) URL') without adding format, normalization, or error-handling detail, so it sits at the baseline 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?

States a specific verb (Run) and resource (Ready4Bots Bot-Ready check) scoped to a public http(s) URL, and 'The same check the website runs' pins down exactly what the operation is. It is clearly distinguishable from the sibling tools get_business, list_levels, and search_businesses, which handle lookup rather than scoring.

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 ('a public http(s) URL') but never states when to use this versus the sibling lookup tools, nor any when-not conditions. An agent can infer it is the scoring tool for a single URL, but no explicit routing guidance is given.

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