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

Annotations already establish readOnly, idempotent, non-destructive, and closed-world behavior, so the description's job is incremental. It delivers that by disclosing that only settled (not pending) verdicts are returned, that wallets are shortened, and that raw prompts are never exposed — privacy and data-shape facts not present in the annotations.

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 short, front-loaded sentences with no filler, and the privacy constraint is stated early. It is efficient, though the terseness shades into under-specification rather than pure conciseness.

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 and zero parameter coverage in the schema, the description carries the full explanatory burden but omits sentinel scoping, limit semantics, ordering/recency, and result shape. What it does cover (privacy redaction) is useful but not sufficient for a two-parameter scoped listing tool.

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 says nothing about either parameter. The required sentinelId — the sole thing determining which records come back — and the limit (1-50, default 20) are entirely undocumented in prose, leaving the agent to guess scoping and pagination behavior.

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?

"Read settled public verdicts" gives a verb and a resource, but the wording drifts from the tool name (recent_attempts vs "verdicts") and never states that results are a list scoped to a single sentinel. An agent can infer a read operation but not precisely what set of records it returns, and no sibling is named for contrast.

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 explicit when-to-use guidance and no alternative named among get_sentinel, list_sentinels, guard_check, or arena_config. The only scoping hints are "settled" and "public," which are implicit filters rather than instructions on when to choose this tool.

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