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

With no annotations provided, the description carries the full burden of disclosing behavior, but it only states the creation action. It does not disclose side effects (e.g., does the monitor start polling immediately?), persistence, potential costs associated with a buyer-owned key, failure modes, or what happens on duplicate monitors.

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 a single, tightly worded sentence with the action verb front-loaded. Every word earns its place with no fluff or redundancy.

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 6 parameters, no output schema, and no annotations, the description leaves substantial gaps: parameter meanings, expected response/return value, required preconditions, error behavior, and post-creation semantics are all unspecified.

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 input schema has 0% description coverage, so the description must compensate. It only clarifies the api_key parameter ('buyer-owned'), leaving url, label, watch_terms, webhook_url, and interval_minutes entirely unexplained in both the schema and the description.

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 clearly states the verb 'Create' and the resource 'monitor', making the core action unambiguous. It does not explicitly name sibling tools for differentiation, but 'create' is semantically distinct from check_now, list_changes, offer, and preflight, so an agent can likely infer the right tool.

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 description provides no guidance on when to use this tool versus the sibling tools (fluxproof_check_now, fluxproof_list_changes, fluxproof_offer, fluxproof_preflight). There is no mention of prerequisites, sequencing (e.g., run preflight first), or scenarios where this tool is or is not appropriate.

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