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

With readOnlyHint=true and openWorldHint=false already covering the safety profile, the description adds substantive context by enumerating what the record contains: sources, edition, comité de lecture, recordings, ouvrage et prix, plus French and English page addresses. It stops short of describing not-found behavior or matching rules, but the return-content disclosure is genuinely useful.

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?

One dense sentence that front-loads the return ('fiche complète') and then lists contents; nothing is wasted. The list is long but each item earns its place by telling the agent what will come back.

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?

No output schema exists, so the description carries the burden of describing returns, and it does so item by item. Annotations handle the safety profile. Only minor gaps remain: behavior when the work is not found and how ambiguous titles are resolved.

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?

The single 'work' parameter is fully documented in the schema, including the title-or-page-address duality and concrete examples. The description adds no format or matching detail beyond that, so the baseline 3 applies.

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 verb 'Renvoie' plus the resource 'fiche complète d'une œuvre de la Ravel Edition' is specific and the enumeration of record contents makes the tool's output scope concrete. It never names the sibling search_catalogue, however, so an agent cannot tell from the text alone when to fetch a work versus search the catalogue.

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?

Usage is only implied: the description suggests you call it once you already know which work you want, but there is no explicit when-to-use, no prerequisite, and no mention of the search_catalogue alternative for discovery. Adequate but with a clear gap.

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