kaiten_update_space_user

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states 'update', which implies mutation, but gives no information about side effects, return values, permissions, reversibility, or behavior when role_id is omitted. For a mutation tool, this is a substantial transparency gap.

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 description is a single, front-loaded sentence with no filler words. It is concise and easy to parse. It is somewhat too terse for the behavioral and usage context a mutation tool needs, but as a concise statement it is efficient.

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 annotations and no output schema, the description must provide more operational context. It does not clarify whether role_id is effectively required to change a role, what happens if it is omitted, or how this differs from adding/removing a user from a space. An agent could invoke it incorrectly by omitting role_id while still expecting a role update.

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 100%, with each parameter individually described ('New role ID', 'User ID to update', 'Space ID'). The tool description adds no additional semantic meaning beyond the schema. The notable ambiguity around role_id being optional despite the operation being 'update a user's role' is not resolved.

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 and resource: 'Update a user's role in a Kaiten space.' This makes the operation clear and differentiates it from siblings like add_space_user and remove_space_user by the role-update intent. However, it does not explicitly name or contrast those siblings, so it falls just short of a top score.

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 guidance on when to use this tool versus kaiten_add_space_user, kaiten_remove_space_user, or kaiten_list_space_users. No prerequisites are given, such as the user already needing to be a member or the role_id being required for an actual role change. The agent must infer usage solely from the tool name and minimal description.

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