update_series_metadata

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

With no annotations, the description must carry the behavioral disclosure. It clearly explains the key behavioral traits: null unsets a field, omission keeps it, and admin privileges are required. This goes beyond a generic 'update' statement. It doesn't mention response format, but the output schema exists and covers that.

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, front-loaded with the action, and every word is informative. No fluff or repetition. It packs the key semantics into a compact form.

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 an output schema, the description is sufficient. It explains the patch behavior and admin requirement. It doesn't list all possible metadata fields, but that's appropriate since patch is open-ended. The description is complete enough for an agent to invoke it correctly.

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. It does for the critical 'patch' parameter by explaining the null vs omission semantics. The 'series_id' parameter is self-evident from the name and schema. The description adds meaningful value beyond just listing parameter names.

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 starts with a specific verb and resource: 'Update series metadata'. It clearly differentiates from sibling tools like update_book_metadata, update_library, etc. The additional detail about null/omission behavior adds specificity.

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 gives a clear context: updating series metadata with partial patch semantics. It doesn't explicitly mention alternatives like refresh_series_metadata or analyze_series, but the tool name and parent library API make the distinction apparent. The admin requirement is a useful usage constraint.

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