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

The readOnlyHint annotation already establishes the safety profile. The description adds useful behavioral context beyond that: it lists the four returned data groups and clarifies that connecting suggested accounts happens in the browser rather than through this tool.

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 description is front-loaded with the purpose and then maps each return group to its follow-up action. It is dense and earns its clauses, though the single long sentence with nested parentheses is harder to scan than it could be.

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 full burden of explaining return values. It does so completely by naming known, missing_profile_fields, suggested_connections, and can_start_your_day, and by tying each to the right next tool or browser action.

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 has zero parameters, so there is no parameter semantics to explain. The baseline for a zero-parameter tool is 4, and nothing in the description introduces confusing or conflicting parameter claims.

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 description states a specific resource and verb: it reports 'where this person's YouSpot setup stands.' It immediately distinguishes the tool from update_my_profile, update_profile_fields, and start_your_day by assigning each returned field to the appropriate follow-up tool.

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?

It clearly says to use this when the person asks to get set up or get started with YouSpot, and it names where each next action belongs: update_my_profile, update_profile_fields, browser-based connection, and start_your_day. It does not state explicit exclusions, so it falls short of a 5.

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