update_profile

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

With no annotations, the description carries full burden. It warns 'DESTRUCTIVE' and states changes are immediate and public, which is good. But it lacks detail on idempotency, error handling, or whether empty strings remove existing values, leaving some ambiguity.

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?

Two sentences plus an emoji warning. Every sentence is necessary: the first states purpose and danger, the second gives behavioral guidelines. No redundancy, front-loaded with key information.

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?

Given simple parameters, no required fields, and an output schema, the description is mostly complete. It covers the essential warning and usage. However, it could mention validation or error behavior (e.g., max length violations) for full completeness.

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 descriptions already cover each parameter (100% coverage). The description adds that all fields are optional and empty strings are ignored, which is useful but limited. It does not elaborate on each parameter beyond what the schema provides.

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 clearly states 'Update the authenticated account's profile info' with a specific verb and resource. It distinguishes from similar tools like update_profile_image and update_profile_banner by focusing on text fields, but does not explicitly mention that it does not handle images or banners.

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 description explains that all fields are optional and empty strings are ignored, guiding usage. However, it does not provide when-to-use vs alternatives, such as suggesting other tools for image changes, nor does it specify prerequisites like authentication.

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