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

Annotations already declare readOnlyHint=true and idempotentHint=false, so the safety profile is covered. The description adds genuine behavioral context beyond that: these are already-signed transactions in a pre-broadcast state, which tells the agent the queue is a staging area rather than a history. Auth and rate-limit behavior are still unstated.

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?

Three short sentences, front-loaded with the core purpose. The third sentence largely restates the first ('signed' / 'awaiting confirmation' repeats 'signed transactions waiting to be broadcast'), which is minor redundancy rather than padding.

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 no output schema, the description usefully enumerates the entry fields (destination chain, address, coin amount, gas), which is exactly the return-value detail an agent would otherwise lack. For a zero-param read tool this is close to complete; it only lacks positioning against sibling queues.

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?

The tool takes zero parameters, so per the rubric the baseline is 4. Nothing in the description is needed to clarify parameter meaning, and nothing misleads.

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?

States a specific verb and resource ('Returns the outbound queue') and pins down scope with 'signed transactions waiting to be broadcast to external chains.' However, it never distinguishes itself from the many sibling queue tools (get_queue, get_scheduled_queue, get_swap_queue), so an agent must infer which queue to pick.

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 or when-not-to-use guidance, and no alternative is named despite several closely related queue siblings. The agent gets no routing help beyond the tool name.

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