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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds real context beyond that by enumerating the status values and explaining that manual_review means SnapEX staff reviews the payout, plus noting the hash/URL are in the destination network's explorer.

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?

A single compact sentence with the resource front-loaded and no filler; every clause conveys return-field or status-value information the agent would otherwise have to guess.

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, the description carries the burden of describing returns, and it does so for the key fields (status, amounts, fee, tx hash/url). Only pagination/error behavior and the create_payout prerequisite are left unstated, which are minor for a single-record read.

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 coverage is 100% and the single parameter is already documented as "payout_id from create_payout." The description adds no further parameter meaning, which is acceptable but hits the baseline only.

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?

"One payout:" plus an enumeration of what is returned (status, amounts, fee, transaction_hash, transaction_url) makes the singular-record retrieval purpose unambiguous. It does not explicitly name the sibling it contrasts with (list_payouts), so sibling differentiation is only implicit via "One".

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: the singular framing signals "fetch one known payout", implicitly selecting it over list_payouts. There is no explicit statement of when to use it, what prerequisite a payout_id has, or when to prefer the list tool.

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