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

With no annotations, the description carries the full burden and does well: it discloses that the request is merely stored, that no fetch occurs, that no notifications are sent, and that no service is promised. It omits permission/auth requirements and any indication of what review process follows, which keeps it short of a 5.

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 action and scope, with the second sentence devoted entirely to limiting assumptions. No filler and no repetition of structured fields.

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 single-parameter, no-output-schema tool, the description covers what the tool does, what it deliberately does not do, and the input constraint. Auth requirements and post-submission behavior remain unstated, but the core is sufficient for correct invocation.

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 coverage is 100%, so the baseline is 3, but the description adds real meaning: 'one' signals a single host per call and 'ASCII' imposes an encoding constraint not stated in the schema. This meaningfully constrains valid input beyond the schema's 'DNS host only' guidance.

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?

Specific verb ('Queue') plus a precisely scoped resource ('one ASCII DNS host for review-only change monitoring'). An agent immediately knows this registers an intent rather than performing any DNS work. The sibling tools (profile_csv/profile_tsv) are unrelated in domain, so no sibling disambiguation is required here.

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 'for review-only change monitoring' establishes the use context, and the negative clauses clarify this is a request-queueing flow rather than an active operation. It does not name alternatives or explicit exclusion conditions, but no comparable sibling exists to route against.

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