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

The description openly discloses destructive behaviors—delete, reset ('deletes all schedules for that domain before upserting'), omitting domain 'resets ALL schedules', and cancel ('permanently cancel'). It also adds side effects like resume clearing 'auto-pause reasons and failure counts', which goes beyond the annotations and matches destructiveHint=true.

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 dense but organized into schedule-management versus schedule-control modes, front-loads the purpose, and every sentence contributes mode semantics or side effects. The reset example and domain-scoping sentence earn their 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 multi-mode tool with five parameters and no output schema, the description covers all modes, required arguments, reset scope, resume side effects, and subscription constraints. An agent has enough information to select the right mode and parameters.

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 baseline is 3. The description adds cross-parameter meaning by tying modes to required parameters (urls vs schid), explaining reset's domain-scoping semantics, and noting resume's side effects. A minor ambiguity remains: 'delete by schid or url' is not perfectly reconciled with the schema's note that schid is required for delete/reset modes.

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 starts with a specific verb and resource — 'Manage recurring test schedules' — and enumerates all seven operation modes. This clearly separates it from one-off test tools like gvt_manage_test and gvt_batch_run_tests, so an agent can infer what the tool is for.

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?

It gives explicit mode-level requirements: schedule management modes 'require urls array' and control modes 'require schid', plus detailed reset-scoping rules. It does not explicitly name sibling alternatives or state when not to use the tool, so it falls short of full 5.

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