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

Annotations already declare destructiveHint=true, readOnlyHint=false, and idempotentHint=false, so the safety profile is covered. The description adds real behavioral value beyond that: it discloses the concrete blast radius (deployments lose the ability to stage drafts) and a post-condition (a human approval link is always returned), which the annotations cannot convey.

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?

Only two short sentences, which is appropriately sized, but the opening pronoun 'it' has no antecedent until the reader infers it refers to the sync token, so the lead is not front-loaded cleanly. The second sentence is tight and 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?

With an output schema present, return values needn't be explained, and annotations cover the safety profile, so the remaining gaps are significant: no clarification of the 'id' parameter and no routing guidance among the several revoke_* siblings. For a destructive, non-idempotent operation, that is too thin.

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?

There is a single required parameter 'id' with 0% schema description coverage, so the description carries the full burden of explaining it and adds nothing — it never says what the id identifies or where to obtain it. An agent cannot tell whether this is a token id, deployment id, or form id.

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 describes a downstream consequence (deployments can no longer stage drafts) rather than stating the action directly; the actual verb+resource lives in the title. It also does not distinguish this tool from close siblings like fillo_revoke_token or fillo_revoke_api_key, so an agent must infer the target resource from the name.

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?

There is no when-to-use guidance, no prerequisites, and no mention of the obvious alternative (fillo_revoke_token vs. this sync-token-specific tool). The consequence sentence hints at impact but never tells the agent under what condition to reach for this tool.

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