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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the description only needs to add context — and it does, disclosing the required auth scope and the fact that the returned monitor set reflects the current state that update_status_page would replace. It omits pagination or rate-limit behavior, keeping it short of a 5.

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 scope prerequisite is front-loaded and the field list is dense and useful. The explanatory sentence defining what a status page is borders on filler, but it supports disambiguation and the whole entry stays short.

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?

With no output schema and zero parameters, the description carries the burden of describing the return payload — and it does so field by field, plus the auth requirement and cross-tool relationship. Nothing an agent needs to call this correctly 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?

The tool takes no parameters, so the baseline of 4 applies; there is no parameter meaning for the description to add or omit.

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?

Opens with the exact verb+resource ('Lists the project's status pages') and then enumerates the returned fields (id, slug, title, monitors, visibility, public URL), so the agent knows precisely what it gets back. It also differentiates itself from update_status_page by contrasting this read result with that tool's mutation of the monitor set.

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?

States the prerequisite ('Requires the read scope or higher') and clarifies the tool's role relative to update_status_page. It does not give an explicit when-not-to-use case or name an alternative lister, but there is no competing status-page list tool among the siblings, so the guidance is adequate.

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