Update a TikTok avatar

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

No annotations are present, so the description carries the full burden of disclosing behavior. It only says 'Set the profile image' without covering side effects, permissions, success/failure, or asynchronous behavior, which is a significant gap for a mutating action.

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 that is concise, front-loaded with the action, and contains no fluff. It efficiently communicates the core purpose.

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?

There is no output schema and no annotations, so the description must compensate for missing return values, error behavior, and operational constraints. It is too brief to be complete, especially given that similar tools like tiktok_operation_status imply asynchronous possibilities.

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 50% (account_id and image_path have descriptions; image_url and image_base64 do not). The description adds that the image can be provided via local path, URL, or base64, which clarifies the meaning of the three image parameters. However, it does not specify exclusivity or validation rules.

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 a specific verb 'Set' and resource 'profile image', clearly distinguishing this tool from siblings like tiktok_update_profile. The three input methods are also listed, making the tool's purpose unmistakable.

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 implies the use case of updating an avatar but provides no explicit when-to-use, exclusions, or alternatives. It does not mention when to prefer tiktok_update_profile or other tools.

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