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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds ordering (newest first) and account scoping, which is useful, but says nothing about how many results are returned by default, how the limit truncates history, or what a "check" record contains.

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 sentences, zero filler, with the ordering and scope front-loaded and the optional narrowing called out second. Nothing is redundant or buried.

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 zero-required-parameter, read-only list tool with full schema coverage and no output schema, the description covers what the tool returns at a high level (recent checks, newest first) and how to narrow it. The main remaining gap is that with no output schema it could hint at the shape of a returned check record.

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 100%, so both limit and siteUrl are already documented in the schema. The description restates siteUrl's filtering role without adding format, matching behavior, or default-value details beyond what the schema provides, so baseline 3 applies.

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?

"Lists recent revenue-path checks for the authenticated account, newest first" gives a specific verb (lists), a specific resource (revenue-path checks), the scope (authenticated account) and the ordering (newest first). It is clear on its own, but it never names or contrasts itself with siblings like run_revenue_check or get_latest_findings.

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?

Usage is only implied: an agent can infer this retrieves existing checks rather than executing one (run_revenue_check), but the description never states when to choose it over get_latest_findings or get_money_system. No exclusions, prerequisites, or alternative routing are given.

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