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

No annotations are provided, so the description carries the full behavioral burden. 'Fetch' implies a read, and 'public' hints at no authentication, but nothing is said about rate limits, behavior when the id is unknown, or the shape of the returned proof.

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, front-loaded sentence with no filler or repetition. It is efficiently written, though the brevity comes at the cost of the detail noted 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?

For a simple one-parameter read tool this is close to adequate, but with no annotations, no output schema, and no parameter description, the agent still lacks the id format and failure behavior. The minimum viable information is present but incomplete.

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 0% and the single parameter is documented only as a string with minLength 1. The description's 'by id' merely restates the parameter name and adds no format detail (UUID, hash, opaque token), so it does not compensate 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 gives a specific verb ('Fetch') and resource ('public execution proof') plus the lookup key ('by id'), which is enough to distinguish it from list-style siblings such as veya_list_executions and veya_list_proofs. It falls short of 5 because it never names those alternatives or clarifies the slight ambiguity between 'execution' and 'proof'.

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 or when-not-to-use guidance, and no mention of prerequisites or alternatives. The only implied usage signal is 'by id', which tells the agent it needs an identifier but not where to get one or which sibling to call first.

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