set_tag

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

With no annotations provided, the description must bear full responsibility for behavioral disclosure. It only mentions that the tool creates or updates a tag and lists valid direction values, but omits important details such as whether it overwrites existing tags, any side effects, required permissions, or return behavior.

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 very short and to the point, with the purpose clearly stated first and the direction options listed neatly. However, it could be improved by structuring the parameter explanations separately.

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 5 parameters, 4 required, no output schema, and no annotations, the description is insufficient. It does not address the meaning of key parameters, return values, or behavioral nuances, leaving the agent with significant gaps in 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 0%, so the description should compensate. It only explains the 'direction' parameter with possible values, while leaving 'filename', 'name', 'from_frame', and 'to_frame' entirely unexplained. This adds minimal value over the raw schema.

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 creates or updates an animation tag on a sprite, with a specific verb and resource. It also lists the direction parameter options, adding clarity. It distinguishes itself from sibling tool 'delete_tag' by implying it is for creation/updating rather than deletion.

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 provides no guidance on when to use this tool versus alternatives like 'delete_tag' or other tag-related operations. There is no mention of prerequisites or contextual advice for the agent to decide when to invoke this tool.

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