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

With no annotations, the description carries the full behavioral burden; it does disclose the key trait that the operation is read-only via 'Read-only gate'. It does not say what happens on verification failure, whether it throws versus returning a result, or whether it needs network access to the 'published authority key'.

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 operation and scope before the 'read-only gate' tagline. No wasted words, though the trailing tagline is terse to the point of being cryptic.

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 and no annotations, so the description should convey the return shape (boolean vs. detailed verification result or failure reason) and required-parameter expectations; it does neither. It is adequate to identify the operation but thin for a five-parameter cryptographic verification tool.

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%, so the baseline is 3; the schema already documents each field. The description adds the useful framing that the signature is validated against the authority key, but does not clarify the odd fact that all five parameters are optional or which combination is required.

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 precise resources (SHA-256 digest, Ed25519 signature of a TITAN workpaper) against a published authority key. That is far more specific than a generic 'verify' tool, but it offers no explicit differentiation from the compliance-check siblings.

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?

'Read-only gate' hints at the intended use as an integrity check, but there is no explicit when-to-use, when-not, or prerequisite (e.g. whether the workpaper file must exist first, or which parameters are mandatory). An agent must infer the calling context.

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