update_user

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states 'Update user profile information' without mentioning side effects, required permissions, rate limits, or what happens on failure. This is insufficient for a mutation 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?

The description is a single sentence, which is concise, but it is overly brief and lacks structure that would aid quick understanding. It fits the conciseness criterion but underspecifies the tool's behavior.

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?

The tool has 5 parameters, no output schema, and no annotations. The description only provides a one-line summary, omitting details about required fields (beyond id), return value, error behavior, or expected inputs. This is insufficient for complete understanding.

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% (every parameter has a description in the input schema). The tool description adds no additional meaning beyond the schema, so it meets the baseline expectation of not detracting but adds no extra value.

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 the verb 'Update' and the resource 'user profile information', clearly indicating the tool's action and target. While it does not explicitly differentiate from sibling update tools (e.g., update_event, update_song), the resource is distinct enough to infer uniqueness among siblings operating on different entities.

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?

No usage guidelines are provided. The description lacks any indication of when to use this tool versus alternatives (e.g., creating a user, getting user info) or any prerequisites or restrictions. The agent receives no guidance on appropriate context.

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