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

Annotations already declare readOnlyHint=true and openWorldHint=false, so 'READ ONLY' is largely redundant. However, with no output schema, the description adds real value by disclosing the per-position payload: a shareable deeplink plus published/draft comment body text, and by noting the filters narrow the returned set. It still omits ordering, page size, or behavior when run_id is invalid.

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 followed by covered scope, filters, and the read-only note. The closing 'READ ONLY' duplicates the annotation and is the one sentence that does not earn its place, but there is no other filler.

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 three-parameter read tool with full schema coverage and read-only annotations, the description covers purpose, scope, filters, and the returned fields. What remains missing — run-state prerequisites, result ordering, and volume — is modest for a listing tool but not fully addressed.

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% and both enums are already documented, including the subtle note that counts refer to the filtered set while total_positions is unfiltered. The description only restates that target_type and state are optional filters, adding no syntax or semantics beyond the schema, so the 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?

States a specific verb and resource ('list every P&L position and whether it is commented, has an AI draft, or is still open') scoped to a Monatsreporting run, and enumerates the covered position types (P&L lines, summary metrics, cost centers, total). It is clearly distinguishable from get-month-run-status or draft-report-comment by describing comment state rather than run state or writes, but it never names an alternative sibling explicitly.

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 is the read step for inspecting comment coverage after a run exists. There is no explicit statement of prerequisites (does the run need to be completed?), no 'use X instead' routing to get-month-run-status or draft-report-comment, and no guidance on when the optional filters should be applied.

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