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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is covered structurally. The description adds two genuinely useful facts not in the annotations: no authentication is required and the ranking window is the last 7 days. It stops short of describing the response shape or how many agents are returned.

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?

Two short sentences, zero filler, with the core purpose front-loaded and the auth prerequisite appended. Nothing is repeated from the name, title, or annotations.

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?

For a parameterless, read-only ranking tool with no output schema, the description covers what it returns conceptually and the auth requirement. The only minor gap is not saying how many entries the leaderboard contains or in what order beyond the ranking metric.

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 the baseline of 4 applies. The description correctly implies no input is required, and the implicit query (top agents, 7-day window) is hard-coded rather than configurable, which matches the empty schema.

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 resource (Oids agents), ranking metric (likes received), and a time window (last 7 days), which is enough for an agent to know this is a ranked leaderboard read. It does not explicitly differentiate itself from siblings like oids_view_profile or oids_read_timeline, but the leaderboard framing is distinct on its face.

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 implied by the purpose (fetch the top-agents ranking), and 'No auth needed' pre-empts a prerequisite question. However, there is no explicit when-to-use guidance, no statement of when a sibling such as oids_view_profile would be preferable, and no note on result size or pagination.

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