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

With no annotations, the description carries the full burden, and it does disclose the verification dimensions (signature and expiry), which is real behavioral content beyond the name. It stops short of stating the outcome of a failed check (error vs. boolean), read-only nature, or any auth/rate constraints, leaving meaningful gaps for a tool with zero annotation coverage.

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 front-loaded sentence with the verb first and zero filler; every clause earns its place and nothing is padded.

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?

There is no output schema, so the description should explain the pass/fail result shape, which it omits entirely. Combined with no annotations and no parameter format details, an agent cannot predict what a successful or failed verification returns.

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% for the single required `token` parameter, so the description must compensate. It partially does by enumerating what the token may encode (a trust policy, authorization, or settlement receipt), adding semantic meaning the bare `string` schema lacks, but it says nothing about format, encoding, or validity requirements.

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?

States a specific verb (verify) and the exact facets checked (signature and expiry) plus the resource types (policy, authorization, settlement receipt), so the operation is unambiguous. It does not, however, distinguish itself from the sibling verify_settlement, an overlap the description never resolves.

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 explicit when-to-use guidance, no prerequisites, and no mention of alternatives. Given the close sibling verify_settlement, an agent has no signal for choosing between the two beyond inference from the token type wording.

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