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

Annotations already declare destructiveHint=true, idempotentHint=true, and openWorldHint=true, so the safety profile is covered. The description adds one genuinely new behavioral fact — original captures are retained despite the destructive nature — but says nothing about what partially completed work is discarded, whether the call can fail on an already-stopped request, or what request/work context it consumes.

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, front-loaded with the primary effect and followed by the routing caveat; nothing is padded or redundant. The only weakness is that the second sentence compresses several concepts (ongoing updates, disable plan, prepare vs. review) into one unqualified clause.

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?

An output schema and annotations exist, so return values and safety signaling need not be restated. Still, for a destructive, open-world operation with five required parameters including a pinned catalog version and request key, the description does not explain the request/versioning contract or the difference between stopping future work and disabling an already-running sync.

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?

With six parameters (nested arguments object, read_skills array, expected_catalog_version, request_key, work_id) and only 50% schema description coverage, the description adds no parameter meaning at all. Undescribed fields like work_id, arguments.store_id/operation_id, and request_key are left entirely to the caller's inference, and no format, source, or constraint hints are supplied.

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 says it stops future work in 'this request' and retains original captures, but never names the resource (catalog sync) that distinguishes it from the many sibling stop_* tools such as genads_stop_ad_request, genads_stop_export, or stop_work. The core clause is close to a restatement of the title, and the agent must rely on the tool name to know what is actually being stopped.

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 supplies one explicit when-not condition — that halting ongoing catalog updates requires a separate disable plan — which is useful context. However, there is no positive when-to-use guidance, and the alternative is described abstractly ('prepare and review a separate disable plan') rather than pointing at a specific sibling such as genads_catalog_sync_plans or genads_save_catalog_sync_plan.

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