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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description goes further, disclosing that the section is ABSENT by default (multiplayer DISABLED), that IceServers must hold only public STUN servers while TURN credentials are engine-issued, and the role of MemberTimeoutMs in host takeover — real behavioral context beyond the annotations.

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 key scope statement is front-loaded in the first sentence. The remainder is dense but largely earns its place by explaining returned fields and topology semantics; a couple of clauses (e.g. the VoxelCraft aside) are illustrative padding rather than essential.

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?

With no output schema, the description carries the full burden of explaining the returned model and does so thoroughly: default-absent semantics, DefaultTopology Mesh/Host, MaxPlayersPerRoom cap (default 8), MemberTimeoutMs, and IceServers policy. An agent can interpret the response without further documentation.

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 a single title_id parameter, so the schema already carries the parameter documentation. The description never elaborates on title_id syntax or format, so baseline 3 is appropriate.

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 verb and resource scope: 'GET ONLY the Multiplayer field of TitlePublicConfigurationModel'. The capitalized 'ONLY' makes the read scope unambiguous and distinguishes it from the sibling save_multiplayer, which the description implicitly contrasts by explaining that adding the section turns the module on.

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 rather than stated: an agent infers it should call this to inspect multiplayer config before enabling it. There is no explicit when-to-use/when-not or a named alternative (e.g. 'use save_multiplayer to modify'). The section-absent-means-disabled note is helpful context but not routing guidance.

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