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

Annotations already declare the operation non-read-only, non-idempotent and non-destructive, but the description adds nothing beyond that: it does not say what happens if a schema is already linked, whether links are additive or replace existing ones, or what permissions are required for a mutation tool.

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?

Two very short sentences, front-loaded with the action. The second sentence largely duplicates what the schema fields already state, so it is minor redundancy rather than wasted bulk.

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 three-parameter mutation with no output schema, the description should cover duplicate-link behavior and the result of the call. It leaves both unspecified, so an agent cannot predict the outcome of invoking it.

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 parameters are already well documented, including the 'namespace:name' resolution rule. The description's 'Accepts schema UUIDs or names' restates that both input paths exist but adds no syntax or format detail beyond the 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?

States a specific verb and resource ('Link schemas to a project'), which is unambiguous on its own. It does not, however, distinguish itself from nearby siblings such as build_list_bound_schemas or schema_list_project, so the agent must infer which is appropriate.

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 when-to-use or when-not-to-use guidance is given, and no alternative tool is named. The second sentence describes accepted inputs rather than the conditions under which this tool should be chosen.

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