watch_ack

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

Annotations already state this is not read-only audit, not idempotent-ey? Actually they state readOnlyHint=false and idempotentHint=false, destructiveHint=false, so an agent knows this is a mutating but not destructive operation. The description adds a basic behavioral outcome ('close' or 'record failure') but does not explain side effects, irreversibility, or what happens if the delivery is already acknowledged.

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 one efficient sentence that front-loads the primary outcome and then gives the failure alternative. There is no filler or redundant repetition of the tool name.

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 mutating tool with four parametersheb, no output schema, and minimal parameter documentation, the description is too thin. It omits what the return/response will be, whether an error string is required on failure, and what happens when acked delivery is repeatedly acked.

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 0%, and the description does not compensate by explaining any parameters. Field names like duty_id and delivery_id are somewhat self-explanatory, but the relationship between success, error, and 'record failure' is never clarified, especially whether error is expected when success is false.

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 uses a specific verb and resource ('Close a claimed delivery') and adds a second mode ('record failure'), so an agent can see what the tool accomplishes. It also distinguishes itself from watch_reply by restricting use to cases where 'no content reply is required', though it does not explicitly name that sibling.

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 gives clear conditions for use: close only when no content reply is needed, or record failure. It does not explicitly list when not to use the tool or point to alternatives such as watch_reply, but the distinction is implied strongly enough.

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