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

Annotations already establish readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds real behavioral context beyond that: the website link is conditional on publication, and downloads require a separate tool. Return-value structure is legitimately omitted because an output schema exists.

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?

Extremely compact and front-loaded – the resource and its constituent links come first, the sibling hand-offs second. The telegraphic fragment style ('Links for a listing: ...') and the 'Downloads: request_download.' shorthand are efficient but read as notes rather than complete sentences.

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 one-parameter read tool with an output schema and full annotation coverage, the description covers what the tool returns, when the website link is absent, and where the related actions live. Nothing an agent needs in order to call it correctly appears to be 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?

There is a single required parameter, listingId, and schema description coverage is 100%, so the schema already carries the semantics. The description adds nothing about the id's format or source (e.g. from list_listings), which is the baseline-3 outcome when the schema does the heavy lifting.

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 names the resource (links for a listing) and enumerates exactly what comes back: the Reel-E page, the editor, and the public website URL. An agent can tell this apart from publish_website and request_download, which are named as the tools that create/produce those things. It is slightly verb-less ('Links for a listing:'), which keeps it from a 5.

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 gives clear routing context: the website link is only present 'once it is published (publish_website)' and downloads are obtained via 'request_download'. That tells the agent to call sibling tools rather than expecting this one to perform those actions. It does not state an explicit when-not or prerequisite (e.g. listing must exist/be accessible), so it falls short of a 5.

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