update_persona

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

No annotations are provided, so the description carries the full burden. It discloses the partial update behavior ('Only provide the fields you want to change'), which adds value. However, it does not mention side effects, required permissions, or what happens to unprovided fields, limiting transparency.

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 exceptionally concise: two short sentences followed by a clean list. The main purpose is front-loaded in the first sentence, and every piece of information is relevant and non-redundant.

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 tool with 6 parameters and partial update semantics, the description is fairly complete. It covers the core behavior and parameter meanings. The existence of an output schema reduces the need to explain return values. Minor gaps include lack of error conditions or prerequisites, but overall adequate.

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 0%, so the description must compensate. The Args list gives brief explanations like 'The UUID of the persona to update' and 'New display name', which add some semantic value beyond parameter names. However, these are minimal and mostly repeat the parameter titles, providing only marginal improvement.

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 tool updates an existing persona. It distinguishes itself from sibling tools like create_persona and delete_persona by specifying 'update' and includes the important detail that only provided fields are changed, which is a key differentiator.

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 does not explicitly state when to use this tool versus alternatives like create_persona or delete_persona. It implicitly suggests use for updating existing personas, but lacks guidance on prerequisites or when not to use it.

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