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

Annotations already establish readOnlyHint=true, so the safety profile is covered. The description adds useful substance by disclosing the two checks performed (signature and tamper detection), but it says nothing about what happens on failure, such as whether it throws or returns a false result. That gap limits the score.

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 short sentences, front-loaded with the core purpose and with zero filler. Every clause earns its place by stating either what is checked or what to pass in.

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 one-parameter verification tool with no output schema, the definition covers input and the checks performed but leaves the result shape unexplained. An agent cannot tell from the description whether a failed verification yields an error, a false value, or a status object.

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 schema already documents the single receipt parameter with the id format. The description's restatement of 'pass the receipt object or its id' adds no meaning beyond the schema, so the baseline 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 names a specific verb and resource and, unusually, spells out exactly what is being checked: the Actuary signature and that the receipt's contents are unchanged. That detail separates it from a plain get_receipt read, though it does not name the sibling directly.

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?

Usage is only implied by the stated purpose: call this when you need to confirm authenticity. There is no explicit guidance on when to choose this over get_receipt or how it relates to the other verify/mandate tools, and no preconditions are mentioned.

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