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

No annotations provided, so the description carries the full behavioral burden. It never says what the output looks like (HTML link tags? JSON-LD?), whether entries must form a complete reciprocal set, or what defaultUrl does when omitted. For a generator tool with zero annotation coverage this is a real gap.

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?

A single tight sentence with the key qualifier front-loaded. No waste, though at this size it may be too terse to be sufficient.

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?

A 2-param generator with no annotations, no output schema, and 0% param coverage needs more: expected output format, reciprocity requirements across entries, and defaultUrl behavior are all missing.

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 neither parameter is explained in the description. 'reciprocal' is the only semantic hint about how entries must relate, but the roles of entries vs. defaultUrl and the meaning of the lang/url fields are undocumented in both places.

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?

States a specific verb+resource (generate hreflang tags) and adds a meaningful qualifier ('reciprocal', 'multilingual site') that distinguishes it from generic schema generators. Sibling tools are all generators of different artifacts, so the resource name alone is enough to differentiate.

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 indication of when to use this vs. alternatives, no prerequisites, no mention of what input is needed. The 'reciprocal' hint implies entries should cross-link, but this is never stated as a usage condition.

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