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

Annotations already establish readOnly, idempotent, non-destructive and closed-world behavior, so the bar is lower. The description adds genuinely non-structured context: the authentication mechanism and the fallback header form, plus the set of fields the response will contain. It stops short of edge cases, such as what happens when the showcase is unpublished or limits are unset.

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?

Two sentences, front-loaded with what the tool returns and followed by the auth requirement, with no filler. The content enumeration is slightly dense but each item tells the agent something about the response payload.

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?

There is no output schema, and the description compensates by listing the returned data. Combined with the auth note, an agent has enough to invoke the tool correctly and interpret the result. Naming the complementary update_showcase tool would close the last gap.

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?

With a single parameter at 100% schema description coverage, the schema already documents the token and its Optional Authorization fallback. The description largely restates that ('Needs your link_owner token, as token or as Authorization: Bearer') rather than adding new meaning, so 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 description states a specific verb and resource ('Your owner's showcase as saved') and enumerates the returned contents: agents, tools, skills, projects, publish state, and limits. It implicitly separates itself from the write-side sibling update_showcase via 'as saved', but never names that sibling, so an agent must infer the pairing.

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 a concrete prerequisite — the link_owner token, either as a parameter or an Authorization: Bearer header — which tells the agent what must be true before calling. It does not say when to prefer this over update_showcase or what to do if the owner has no showcase, so exclusion guidance is missing.

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