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

The annotations already declare readOnly, idempotent, non-destructive, and openWorld, so the safety profile is fully covered. The description adds useful return-content detail (plan, quota, selected ICP, website label) but says nothing about authentication prerequisites, quota semantics, or what happens if no ICP has been selected.

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?

A single front-loaded sentence that names the returned fields immediately, with no filler. The trailing participial clause about the website label is slightly awkward and could have been phrased more directly.

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?

Placeholder.

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 zero parameters, so per the baseline this scores 4. The clause about the profile website as a human-readable label describes output labeling rather than parameter meaning, and the empty schema leaves nothing further to disambiguate.

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?

Uses a specific verb ("Return") with a well-defined resource list: account plan, quota, and selected ICP. It is clearly a zero-argument account-scoped read, but it never distinguishes itself from siblings like list_icp_profiles, which an agent could plausibly reach for instead.

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?

Usage is only implied: words like "authenticated" and "selected ICP" suggest this is the tool for reading the current account's own state rather than enumerating profiles. There is no explicit when-to-use statement and no named alternative such as list_icp_profiles or build_icp_profile.

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