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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered by structured data. The description adds the useful constraint that at most 4 pages are returned and where the ids come from, but says nothing about the shape or size of what comes back.

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 sentence with no filler; the cardinality limit and the routing condition are front-loaded and both earn their place.

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?

With no output schema, the description carries the burden of explaining what a returned example page contains, and it only implies this. Combined with the undocumented deck_id, the definition is usable but leaves real gaps for a read tool whose return value is the whole point.

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 coverage is 50%: 'ids' is documented in the schema with format and an example, while 'deck_id' has no description anywhere. The description supplements the ids parameter by tying it to the page brief's list, which is genuine added meaning, but the undocumented deck_id keeps this at a baseline 3.

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 a specific verb (read) and resource (the studio's example pages) and states the cardinality cap ('up to 4'), which cleanly separates it from siblings like read_page and get_page_brief. It stops short of explicitly naming an alternative tool, but an agent can tell what this does without opening the schema.

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?

'Read the ones that fit the page you are about to write' gives a clear situational trigger, and the reference to ids 'listed in a page brief' implies the get_page_brief → get_examples workflow. There is no explicit when-not guidance or named sibling to avoid, 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.