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

With no annotations, the description must carry the behavioral burden, and it does disclose the content areas the spec covers. However, it never states that this returns static reference documentation (read-only, no side effects), nor whether it is versioned or how it relates to live chain state, which are the behaviors that matter for a zero-parameter spec tool.

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?

A single front-loaded sentence that opens with the purpose ("How to verify...") and then lists the covered topics. The trailing colon-list is dense but every item earns its place; nothing is wasted or repeated.

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?

An output schema exists, so return-value explanation is unnecessary, and zero parameters keep the calling surface trivial. What is missing is disambiguation from the automatic verification siblings and any note on whether the spec is a static artifact or tied to a specific lexicon/CHXI version, which an agent calling it would want to know.

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 tool takes zero parameters, so there are no input semantics to explain and the baseline of 4 applies. The description enumerates the topics the spec addresses, which is the closest analogue to parameter meaning here.

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 resource (instrument signal commits and fill receipts) and a specific function (how to verify them manually, including canonical forms, hashes, calldata layouts, and the reveal rule). It is clear what the spec covers, but it never names or contrasts itself with the obvious siblings it could be confused with — verify_instrument_signal, receipt_spec, delivery_spec, or instrument_signals — so sibling differentiation is left to the agent.

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 phrase "verify ... yourself" implies this is the reference to consult when performing verification independently rather than calling an automated verify tool, which is implied usage rather than an explicit rule. There is no statement of when to prefer this over receipt_spec or verify_instrument_signal, and no prerequisites or exclusions are given.

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