game_center_matchmaking_teams_update_instance

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

With no annotations, the description carries the full behavioral burden, but it discloses nothing about partial-update semantics (PATCH vs PUT), what happens to fields left out of the JSON:API envelope, required permissions, or reversibility. Pointing at the OpenAPI schema is the only useful behavioral hint.

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?

It is short and front-loads the operation, but the endpoint is written twice in immediate succession (the parenthetical duplicate), which is pure waste in an already terse description.

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 mutation tool with a nested JSON:API body, no annotations, and no output schema, the definition is too thin. It omits partial-update behavior, body field expectations, and any result/permission context an agent would need to invoke it correctly.

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 coverage is 100%, so both parameters (id, body) are already documented in the schema. The description only points at components.schemas.GameCenterMatchmakingTeamUpdateRequest, which the body schema already references, adding no real meaning beyond the schema. Baseline 3 applies.

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 gives a concrete verb and resource (PATCH on /v1/gameCenterMatchmakingTeams/{id}), so an agent can tell it updates a specific matchmaking team. It does not state the purpose in natural language or distinguish itself from the create/delete team siblings.

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?

There is no when-to-use guidance and no mention of alternatives. Siblings like game_center_matchmaking_teams_create_instance and _delete_instance exist, but nothing tells the agent which to pick or under what conditions.

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