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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is fully covered. The description adds no behavioral context beyond that (no auth requirements, no rate limits, no note that it is a pure read with no side effects). With annotations carrying the burden, the description is adequate but adds little.

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 sentence, front-loaded with the settings location and then the three concrete data groups. It is efficient, though the comma-separated list structure is slightly loose and the sentence has no explicit verb.

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 carries the return-value burden, and it does so by enumerating the layout's three components (sections, pinned fields/badges, pinnable fields). This is reasonably complete for a zero-parameter read tool, though it stops short of describing the shape of the returned data.

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 there is nothing for the description to disambiguate; the 0-param baseline of 4 applies. The description cannot add parameter meaning because none exists.

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?

The name/title give the verb+resource ('Get the contact panel layout') and the description enumerates the concrete contents (visible sections, pinned fields and header badges, pinnable contact fields). It is clear what the tool returns, but it never distinguishes itself from the sibling update_contact_panel, so an agent gets no sibling differentiation.

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?

There is no explicit when-to-use or when-not-to-use guidance, and the write counterpart update_contact_panel is not referenced. The 'Settings → Contact panel' prefix only hints at where this configuration lives in the UI, not when an agent should call this tool.

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