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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so safety is fully covered. The description adds one genuinely useful behavioral fact beyond the schema: the response bundles a *short* list of the publisher's apps, warning the agent that the app list is truncated rather than exhaustive. It stops short of explaining pagination or what happens for an unknown publisherId.

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 front-loaded fragment with zero filler; nothing is redundant. It is efficient, though the brevity contributes to the under-specification penalized in other dimensions.

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 and no parameter documentation, the description carries the full burden for a 2-parameter lookup tool yet supplies only a fragment. It gestures at the return shape (identity + app list) but never enumerates identity fields, error behavior for a missing publisher, or what 'short' means in practice.

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 0%, so both parameters (publisherId, limit with max 200) are undocumented in structured data and the description must compensate — it largely doesn't. Only the word "short" loosely implies the limit parameter, and nothing explains publisherId's format or bounds.

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 is a noun phrase, "Publisher identity and a short list of their apps," that essentially restates the title "Publisher details" without a verb naming the operation (fetch/retrieve by ID). It does hint at the response contents, which is slightly more than the name, but it never says what the tool does or how it differs from siblings like get_app or find_apps.

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?

There is no statement of when to use this tool, no prerequisites, and no reference to any alternative among the 15 siblings. An agent must infer usage entirely from the name 'get_publisher'. No exclusions or routing guidance are present.

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