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

Annotations already declare readOnlyHint=true, and the description does not contradict that. It adds useful context about the receipt contents and verification endpoints, but it does not describe tool behavior such as error cases, availability of the receipt, or what the response contains beyond the listed 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?

The description is concise and information-dense, with the receipt definition and verification instructions in two short sentences. There is minimal fluff, and the most important identifying details appear early.

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 read-only single-parameter tool, the description provides adequate core information: what the receipt is, its contents, and how to verify it. However, there is no explicit statement about the return value format or behavior when the job_id does not exist, leaving some gaps given there is no output schema.

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?

The description provides no explanation of job_id, and schema description coverage is 0%. The parameter name is somewhat self-explanatory, but the tool description does not compensate for the lack of schema documentation by stating how job_id is used or what values are valid.

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 clearly identifies a platform-signed receipt and its key contents, distinguishing this resource from generic job operations. It lacks an explicit verb like 'retrieve' or 'get', so the action is implied rather than stated outright.

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?

The description gives clear context for when to use this tool: when a signed receipt is needed to show to operators or other platforms. It does not mention alternatives or exclusions, but the use case is specific enough for an agent to select it appropriately.

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