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

Annotations already declare readOnly, idempotent and non-destructive, so safety is covered. The description adds value beyond them: output is plain-text file content intended to be saved privately, evidence is provider-reported and explicitly not legal proof, and it does not publish, share, charge or resend. It omits pagination/size or ownership-failure behavior, keeping it from a 5.

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?

Four short sentences, front-loaded with what is returned and followed by caveats and explicit non-actions. Slight redundancy between 'Returns ... as a plain-text report' and 'Returns file content', but no wasted text.

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?

An output schema exists so return values need not be re-described, and annotations carry the safety profile. The description covers the evidence-reliability caveat and the non-write scope, leaving only minor gaps (ownership failure handling, report size/limits).

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?

Only one parameter (orderId) and schema description coverage is 0%, so the schema supplies no semantics. The description contributes the 'owned order' constraint, implying an authorization/ownership check on the id, but gives no format, example, or failure behavior for the parameter.

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 multi-part resource (payment, fulfillment, timeline, provider evidence) scoped to 'one owned order', and the final sentence rules out the write-like siblings. It is clear what the tool produces, though it never names which sibling (e.g. postedly_order_status) it supersedes for evidence export.

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 implied by 'for one owned order' and 'not legal proof', but there is no explicit when-to-use or when-not-to-use guidance relative to postedly_orders or postedly_order_status. The agent must infer the export-evidence use case from the return-format wording.

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