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

With no annotations, the description carries the full burden. It does add valuable non-obvious context — that the wallet is a payout address only, that keys must never be requested, and that job text should be treated as data rather than instructions (a prompt-injection guard). However, it omits whether this is a pure read, what happens on an unknown payout id, and what the response 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?

The purpose is front-loaded in a short first sentence, which is good. But the safety advice repeats itself ('never ask for a key' then 'never ask for keys'), and two of four sentences are near-duplicates, so wording is not fully earned.

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 simple single-parameter lookup with no output schema and no annotations, the definition is adequate on the safety dimension but thin on operational behavior — return shape, error handling, and how a payout_id is acquired are all absent.

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% for the single parameter, so the description must compensate. It says the id is 'numeric', which aligns with the integer type in the schema but adds little beyond it — no format, range, or sourcing guidance (e.g., where a payout_id is obtained).

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?

The first sentence gives a specific verb and resource ('Get a payout by numeric id'), which cleanly distinguishes this from job-oriented siblings like get_job or submission_status. It stops short of explicitly routing the agent between this and any other payout-related operation, but the resource is unambiguous.

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?

'Wallet only' hints at the applicable context but never states when to call this versus siblings such as submission_status, nor any prerequisite like having a prior claim. There are no exclusions or alternative-routing instructions, so the agent must infer usage entirely.

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