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

Annotations already declare destructiveHint=true, idempotentHint=true, readOnlyHint=false, and openWorldHint=false, so the bar is lower. The description adds return behavior ('Returns the resulting route list') and the `all`-vs-`id` scope distinction, which is useful context beyond the structured hints.

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?

Single front-loaded sentence with zero waste: it covers the two removal modes and the return value. No filler.

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?

Covers what the tool does, both removal modes, and the return value. With annotations carrying the destructive/idempotent profile and the schema documenting params, only the explicit when-to-use decision and any error/partial-failure behavior are missing.

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%: both `id` and `all` are already fully documented in the schema, including that `id` comes from add/list. The description only restates the same semantics, adding no new syntax or edge-case meaning.

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+resource: 'Remove one mock/abort route by `id`, or every route on this device when `all` is true.' Distinguishes from sibling android_traffic_mock_add/list by naming the operation and scope.

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?

Implies usage through the two mutually exclusive paths (single `id` vs `all`), but never explicitly says when to prefer `all` over `id` or when removal is necessary. The sibling add/list tools are referenced only in the schema, not the description.

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