vibo_set_profile_photo

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

The description goes beyond annotations (which only set readOnlyHint=false) by disclosing that the tool is 'confirm-gated' and returns the uploaded image URL. This adds valuable context about the two-step process and expected output, though it could mention potential errors or permissions.

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 extremely concise with three sentences, each providing essential information: action+input, output, and a key behavioral constraint. No superfluous words or repetition.

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 simple two-parameter tool with no output schema, the description covers the core functionality and an important behavioral aspect (confirm-gated). It lacks details on error handling or file size limits, but given the tool's simplicity, it is largely complete.

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%, so the description adds little beyond the schema. It reinforces that 'path' is a local image file and that 'confirm' gates the operation, but these are already in the schema. Baseline 3 is appropriate as the description does not introduce new semantics.

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 the verb 'Set', the resource 'your Vibo profile photo', and the input method 'from a local image file'. It also specifies the output 'Returns the uploaded image URL' and a key behavioral trait 'Confirm-gated'. This distinguishes it from sibling tools, none of which handle profile photo setting.

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 usage for setting a profile photo but does not explicitly state when to use this tool versus alternatives or when not to use it. The 'confirm-gated' note hints at the need for user confirmation but lacks explicit guidance on prerequisites or alternatives.

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