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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is fully covered. The description's contribution is limited to enumerating returned fields, and it says nothing about behavior for an unknown token, error handling, or why the tool is flagged open-world — a modest addition given annotations carry the main burden.

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 short sentence with no filler, front-loaded on the resource. It is structurally sound but so compressed that the leading word is 'One' rather than a verb, making it read as a data label more than a usable directive.

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?

An output schema exists, so spending the entire description enumerating return fields (mdHash, packageHash, version, owner, URI, ARD record) is redundant, while the one thing only the description could clarify — the tokenId parameter and how to obtain it — goes unaddressed. For a lookup tool whose selection hinges on argument format, this is under-specified.

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% on the single required parameter, so the description must supply its meaning. It only implies that tokenId refers to a 'skill token'; it never states the numeric-string format enforced by the pattern, nor where a token comes from. That is not enough compensation for the coverage gap.

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 identifies a specific resource: a single skill token's commitment data (mdHash, packageHash, version) plus owner, URI and ARD record. The word 'One' distinguishes it from the plural sibling skill_list without the agent needing to open either schema, though the phrasing is a noun fragment rather than a verb+resource statement of purpose.

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 mention of skill_list as the listing alternative, and no stated precondition such as needing a token from another call. The only implicit cue is 'One skill token', which hints at single-item lookup but does not route the agent.

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