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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds a genuinely new behavioral detail not in structured fields: the required los_measurements:write scope (auth requirement). It stops short of stating permanence or not-found behavior, but the auth disclosure is a meaningful value-add over the annotations.

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, zero filler. The operation is front-loaded and the auth requirement follows immediately; every clause earns its place.

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 destructive delete with rich annotations and no output schema, the description covers what it does, that it needs write scope, and (via annotations) that it is destructive and idempotent. It omits whether deletion is permanent and what happens on a missing/invalid ID, but these are minor gaps given the annotation coverage.

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% and the single id parameter (UUID format with pattern) is fully documented in the schema. The description's 'by ID' adds no format or meaning beyond what the schema already provides, so the baseline of 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 verb and resource ('Delete a LoS measurement by ID'), so the operation is unambiguous. However, it does not distinguish this from near-identical siblings like delete_los_measure, delete_los_consequence, or delete_los_proposed_target, so an agent must infer which LoS entity applies.

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 gives no when-to-use guidance, no prerequisites for deletion, and no mention of alternatives (e.g., deleting a measurement vs a measure, or using update_los_measurement instead). It only restates the operation, leaving selection entirely to the agent.

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