sync_ical_subscription

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

Annotations already provide idempotentHint=true, destructiveHint=false. The description adds that the tool returns once the sync is queued, indicating asynchronous behavior and immediate return, which is useful context beyond annotations. No contradictions.

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 two sentences, very concise, and front-loaded with the key action. Every word is useful with no filler or repetition.

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?

The tool is simple with one parameter and no output schema. The description explains the queuing behavior but does not address potential error cases (e.g., invalid subscription ID) or confirm if the sync actually completes. Given the low complexity, it is mostly complete but could briefly mention what happens if the subscription is invalid.

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?

Input schema has one required parameter (subscription_id) with a clear description. Schema coverage is 100%, so the baseline is 3. The description adds no additional parameter semantics beyond what the schema already provides.

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 clearly states the tool triggers an immediate sync of an iCal feed subscription instead of waiting for the next poll. It specifies the action (trigger sync) and resource (iCal feed subscription), and contrasts with the scheduled alternative, effectively distinguishing it from siblings like subscribe_ical and update_ical_subscription.

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 explicitly tells when to use this tool: when you need immediate sync instead of waiting for the next scheduled poll. It does not explicitly list when not to use it or provide alternative tool names, but the context is clear enough for an AI agent to understand the use case.

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