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

Annotations already declare readOnly, idempotent, closed-world and non-destructive, so the bar is lower. The description still adds real value beyond them: it states no paid work or external requests occur, that private tracking notes and credentials are excluded from the result, and that storage does not constitute approval for public disclosure or external submission. The only weak spot is the slightly oblique phrasing about disclosure approval.

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?

Front-loaded with the core action, then scope limits, then the follow-up tool. Four short sentences with little waste, though 'Profile storage does not approve public disclosure and no external submission is available' is dense and reads as compliance boilerplate an agent may need to parse twice.

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?

An output schema exists, so return shape needn't be described, and the tool takes no parameters. The description covers action, data exclusions, side-effect absence and next step, leaving only the sibling-disambiguation gap against the other backlink getters.

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?

Zero parameters, so the baseline is 4. The description reinforces this with 'No inputs', removing any doubt that the call takes an empty object.

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 and resource: 'Read this organization's versioned backlink fit/profile fields.' The 'versioned' qualifier and the 'fit/profile' framing distinguish it from the report/opportunity siblings, though the description never explicitly names those siblings (e.g. webanto_get_backlink_report) to contrast with.

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?

Provides sequencing guidance by naming the natural follow-up ('Follow with webanto_update_backlink_profile under its separately granted write scope'), and clarifies no inputs are required. However, it gives no explicit when-to-use versus the many other backlink getters (attempt, draft, report, submission pack), which is the main ambiguity an agent faces here.

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