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

Annotations already declare the operation read-only and idempotent, so the bar for additional disclosure is lower. The description adds useful domain context—members are organizations that register DOIs—and spells out the scope of the returned record, including deposit metadata coverage, without contradicting the annotations.

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?

Three sentences each carry weight: the first defines the action and return contents, the second supplies domain context, and the third provides the chaining workflow. No filler or redundancy is present.

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 single-parameter, read-only tool with an output schema and clear annotations, this description is fully sufficient. It tells the agent what the result means, what questions it answers, and how to obtain the required input via a sibling 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%, and the member_id parameter already includes type, positive integer constraint, examples, and a pointer to crossref_get_prefix. The description reinforces the concept of a member ID but does not add significant parameter-level meaning 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?

The description opens with a specific verb and resource: 'Resolves a Crossref member ID to its publisher/organization record', and enumerates meaningful output categories. It is clearly distinguished from siblings like crossref_get_prefix and the search tools through the member-ID focus.

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?

It explicitly states the prerequisite workflow: 'Resolve a DOI prefix... with crossref_get_prefix, then pass that ID here.' This gives direct guidance on when to use this tool versus its sibling resolver, leaving no ambiguity about sequencing.

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