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

Annotations already declare readOnlyHint/idempotentHint/destructiveHint/openWorldHint, so the safety profile is covered. The description goes further by disclosing the returned surface, notably that it exposes API keys, network-access and ethics flags, and the consent class a run is placed in — context that is genuinely useful and not derivable from the structured fields.

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 with no filler, and the returned contents are front-loaded. It loses a point because the fragmentary construction (no subject/verb) makes it slightly harder to parse than a clean 'Retrieves X' statement.

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, so the description carrying the full list of return fields is valuable and largely sufficient for a read-only one-parameter lookup. Minor gaps remain: no error behavior, no note on whether versions must exist, and no routing against the search siblings.

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 100% and the single `tool` parameter already documents the accepted forms (namespace/name or namespace/name@version). The description adds nothing about accepted identifier formats or version-defaulting behavior, so the baseline 3 is appropriate.

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 enumerates the specific contents a caller receives (inputs, outputs, API keys, network access, ethics flags, consent class, run behavior, install/run instructions), which pins down the resource. However, it is a verbless noun fragment that never states what the operation actually does (retrieve/fetch a tool's definition), and it offers no differentiation from the sibling search_tools.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as search_tools (broad discovery) or list_types. An agent must infer on its own that this is the single-tool lookup versus the search siblings.

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