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

With no annotations provided, the description carries the full transparency burden. It usefully discloses durability and the critical one-time display of read_token. It does not cover permissions, side effects, or expiration behavior, but the token warning is meaningful and non-obvious.

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 sentences with no filler. The primary action is front-loaded, and the one-time token warning is a high-value addition that 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?

The description explains what is created and warns about read_token, but there is no output schema and no mention of the result shape beyond the token. It also does not explain how the created resources connect to the sibling tools, leaving some operational context missing.

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 67%, and the description adds no parameter-level meaning. It does not clarify expires_in_seconds, which lacks a schema description, and does not connect name or task_id to the creation behavior. The read_token warning is about output, not parameters.

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 a specific creation action with concrete resources: durable inbox, HTTPS callback URL, and event queue. It is immediately distinguishable from the sibling event-consumption tools acknowledge_event and poll_events.

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 tool's purpose implies it is the setup step before polling or acknowledging events, but the description never explicitly says when to use it versus the siblings. No alternatives or exclusions are mentioned, so usage context is only implied.

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