Store the metadata defaults

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

With no annotations, the description carries the full burden of behavioral disclosure. It does well by stating that the call 'replaces the whole file' and that sending empty metadata clears the defaults, which communicates the destructive/overwriting nature. It could add more about scope or side effects, but the critical behaviors are disclosed.

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 two sentences with no filler. It front-loads the purpose and then gives the two most important behavioral details: whole-file replacement and clearing via empty metadata.

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 one-parameter setter with no output schema, the description covers purpose, replacement semantics, and clearing behavior. It is largely complete, though it does not explicitly state that existing projects are unaffected or describe any return value, but those are minor for this tool.

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 schema already documents the metadata parameter and the replacement/clearing behavior. The description repeats the examples but does not add new semantic detail beyond what the schema provides, so a baseline 3 is appropriate.

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 a specific verb and resource: 'Store Quarto metadata... for every new project,' and adds the key behavioral detail that the call 'replaces the whole file.' This distinguishes it from the sibling get tool and other project/render tools.

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 phrase 'for every new project' gives some context for when this tool applies, but the description does not explicitly state when to use this tool versus quarto_defaults_get or when not to use it. There are no exclusions or alternatives named.

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