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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds that the tool "Returns the steps and the link to open," which tells the agent the response shape is procedural content plus an actionable URL — useful context beyond the annotation set, though an output schema also exists.

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 sentences, zero filler. The trigger conditions come first and the return behavior is a short trailing clause, so the most decision-relevant information is front-loaded.

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 simple, optional-parameter read-only helper with 100% schema coverage, full annotations, and an output schema, nothing an agent needs to select or call it correctly is missing. Trigger conditions, topic routing, and return content are all accounted for.

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?

Schema description coverage is 100% with both parameters enum-documented and defaults stated, so the schema carries the parameter burden and the baseline is 3. The description loosely maps natural-language triggers to topics ("friends in different homes" → remote, "what equipment is needed" → devices), which is marginal added value rather than new syntax or constraint detail.

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 verb (explain) and resource (how PadConsole works), and enumerates the exact user questions it answers: how to start, required equipment/devices, and playing with friends in different homes. It does not explicitly name or differentiate itself from the game-oriented siblings (search_games, recommend_games, etc.), but the help/FAQ nature of the tool is unambiguous.

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?

"Use this when someone asks how to start, what equipment or devices are needed..., or how friends in different homes can play together" gives clear trigger conditions that map directly onto the topic enum values. There are no stated exclusions or named alternatives, so it stops 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.