bookshelf_update_tag

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

Annotations already indicate readOnlyHint=false, so the description's 'WRITE: this modifies your Bookshelf instance' adds no new behavioral context. It does not disclose side effects, required permissions, or what 'update' entails beyond the schema fields.

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 but includes redundant information ('WRITE: this modifies your Bookshelf instance') that merely repeats what annotations already convey. The brevity is not effective because it omits crucial operational details.

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 the tool has two parameters, a nested body object, and no parameter documentation, the description is severely incomplete. It fails to explain the update semantics or what data is required, despite an output schema being present.

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%, and the description provides zero explanation of the 'id' and 'body' parameters. The agent is left without guidance on what values to provide or how the body should be structured.

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 action ('Update tag') and the resource (tag). It distinguishes from sibling tools like create_tag, delete_tag, and get_tag by implying a modification operation on an existing tag.

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?

No guidance on when to use this tool versus alternatives (e.g., create or delete tag). It lacks context about prerequisites or typical use cases, leaving the agent to infer usage from the tool name alone.

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