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

Annotations already declare readOnly, idempotent, non-destructive and open-world, so the safety profile is covered. The description adds genuinely useful context that the upstream source is Israel-restricted and reached via an Israeli gateway, hinting at possible latency or availability constraints, but says nothing about response format or failure behavior when no alerts are active.

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, all earning their place: purpose first, then the optional filter, then the infrastructure caveat. Nothing is redundant.

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 one-optional-parameter read tool with no output schema, the description covers purpose, filtering, and source constraints adequately. Only the shape of returned alert data (areas, alert categories) is left unaddressed, which is a minor gap.

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 single 'city' parameter is fully documented in the schema. The description only restates the Hebrew requirement and example without clarifying matching behavior (exact vs. substring, multi-area alerts), so baseline 3 applies.

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 resource (Pikud HaOref / Home Front Command alerts) and temporal scope ('right now' / 'active'), with examples of alert types. It implicitly separates itself from oref_alert_history via 'right now', but never names the sibling or spells out the contrast.

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 use case as real-time alerts and explains that the city filter is optional and must be in Hebrew, with a concrete example. It does not state when to avoid this tool or explicitly route to oref_alert_history for past data.

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