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

Adds substantial context beyond annotations: payment stays closed until email delivery is recorded, then awaits provider-verified settlement, plus idempotency/retry guidance and a canonicality note. The trailing 'Confirmation boundary' sentence is generic boilerplate that lists categories (reads, reversible saves) irrelevant to this outbound-email send and muddies the picture.

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?

Good front-loading with the core action and gate in the first two sentences, but the tail is padded with reusable boilerplate ('Canonicality', 'Confirmation boundary' enumerating unrelated action types) that does not earn its place for this tool.

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 mutating, 5-parameter tool with 0% schema coverage and no output schema, the description supplies useful delivery/settlement and idempotency behavior but omits what the notice contains, seller targeting, and any error/rollback behavior.

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%, so the description must compensate. It does explain two of the four required params in prose (sendConfirmed via 'requires explicit send confirmation', idempotencyKey via the retry-key guidance), but companyId/caseId and the _corply_context receipt object are left undocumented.

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: queues the company-sent repurchase exercise notice to the seller, gated on board consent. An agent can tell what the tool does, though it does not explicitly differentiate itself from siblings like propose_cliff_repurchase or request_signature.

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?

States the precondition (only after board consent) and the send-confirmation requirement, which is real guidance. But 'plus every prerequisite stated above' is a dangling reference to absent text, and there is no explicit when-not or alternative-tool routing.

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