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

With no annotations, the description carries the full disclosure burden and does well: it states the hosted signing model, that the key is used for this call only and never stored, the time limit, the pass threshold, and the differing scoring visibility of Edition 2. It is silent on failure consequences and what happens to a partially completed run.

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?

Densely packed but front-loaded: what it is, the clock, the pass bar, then edition detail, then signing. Every sentence carries information, though the edition/signing tail could be tightened slightly.

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 two-parameter tool with no output schema and no annotations, the description covers timing, scoring, edition differences, and the signing/key-handling model well. The remaining gap is the call's return/flow — whether starting yields tasks to answer, a signed token, or both — which an agent must infer.

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 coverage is 50%; the 'secret' parameter is documented in the schema, while 'edition' is only a bare integer range there. The description compensates by defining what Edition 1 (default) and Edition 2 actually do, which is meaningful semantics beyond the schema's min/max.

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?

Specific verb+resource: 'Start the bench' with concrete scope (ten tasks, 15 minutes, 7-of-10 pass bar). An agent can distinguish this from ronin_bench_submit and the other ronin_* siblings without opening the schema, since the run structure and outcome (badge, better search placement) are stated outright.

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?

Explains the two editions and how the default (Edition 1) behaves, and points to an alternative path ('or sign yourself with ronin_submit') for the signing step. It does not explicitly say when to prefer starting fresh versus resubmitting, but the context it provides is clear and actionable.

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