add_players

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It correctly indicates this is an additive mutation, but it does not mention any limits on player count, whether the test must be actively running versus simply started, or what happens if the test is not running. This is thin coverage for a mutating 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?

One sentence with no filler. The core verb, object, and required context are all front-loaded, making it immediately scannable.

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 one-parameter tool, the description is nearly sufficient, but it leaves the meaning of the 'players' parameter unexplained and provides no behavioral guardrails. Given the absence of annotations and output schema, a bit more detail about expected usage and constraints would make it fully complete.

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 schema description coverage is 0%, so the description must compensate for the undocumented 'players' parameter. The tool name and description imply that 'players' is the count of simulated clients, but the description never explicitly states that the number parameter controls how many clients are added.

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 uses a specific verb ('Add') with a clear resource ('simulated clients') and a context ('running multiplayer test'), which clearly separates it from siblings like start_test and stop_test. An agent can understand the tool's function without opening the schema.

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?

The phrase 'running multiplayer test' implies the tool should be used after start_test, but it does not explicitly say when to use it versus alternatives or mention any exclusions. Usage context is present but implied rather than stated.

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