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

Annotations only cover the safety profile (readOnly=false, destructive=false, idempotent=false, openWorld=false); the description goes well beyond them by enumerating the absent side effects — nothing recorded, no goal movement, no thank-you — and by giving latency behavior (~5s to appear, gone after 6s). That is exactly the context an agent needs to know this is a throwaway call.

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?

Three short sentences: purpose first, then the negative side-effect list, then timing. Every sentence carries distinct information and none repeats the title or annotations.

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 an output schema present, return values need no explanation, and the description covers the remaining unknowns: ephemerality, latency, and absence of persistent effects. Complete for a zero-parameter test-fire 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?

The tool takes zero parameters, so the baseline is 4 and there is nothing for the description to clarify or compensate for. It correctly spends no words on arguments.

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 (fire) and resource (test alert) plus the reason it exists: previewing placement in OBS during setup. Nothing in the sibling list overlaps with this, so an agent can route to it unambiguously.

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?

Clearly frames the context of use ('while setting up', to see where the alert lands in the overlay) rather than the real alert flow. It does not explicitly name alternatives or say when not to use it, but no sibling is close enough to require an exclusion.

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