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. 'Free' discloses that there is no cost, and 'verify' implies a read-only operation, but the description does not explain what verification means, what happens on failure, whether the proof is mutated, or what the result contains.

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 extremely short and front-loaded: 'Verify an aggregate proof. Free.' Every clause has a purpose, with cost information included efficiently. The brevity is appropriate, though the second sentence is thin.

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?

With no annotations, no output schema, and an opaque nested parameter object, the description is incomplete for an agent to invoke the tool correctly. It does not explain the proof format, expected return, failure behavior, or relationship to sibling tools.

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?

There is one required parameter, 'proof,' described only as a nested object with 0% schema description coverage. The description says 'aggregate proof' but provides no structure, format, or encoding guidance for the nested object. With low coverage and a complex nested parameter, the description should compensate but does not.

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 states a specific verb and resource: 'Verify an aggregate proof.' This clearly distinguishes it from sibling tools like aggregate_proof, verify_receipts, and mint_receipt. It lacks explicit sibling differentiation, but the core purpose is unambiguous.

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 only guidance is 'Free,' which addresses cost but not when to use this tool versus verify_receipts or aggregate_proof. There are no conditions, prerequisites, or exclusions to help an agent choose correctly.

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