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

With no annotations, the description carries the full behavioral burden. It discloses the assignment precondition and states the return is a json object, but says nothing about auth requirements, pagination, or error behavior. The precondition is genuine added value, but coverage remains partial.

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 opening sentence is repeated almost verbatim in the second line, wasting space on redundancy. The content is front-loaded and otherwise compact, but the duplication is a clear structural flaw.

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 two-parameter list tool with no output schema and no annotations, the description covers purpose, precondition, parameter meanings, and the return shape. It is adequately complete, missing only deeper error/pagination detail.

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 0%, so the description must compensate, and it does: user_id is explained as the channel-specific customer id, and platform is given concrete values (discord, telegram, whatsapp) that the schema does not encode as an enum. This adds real meaning beyond the schema.

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 description states a specific verb (Retrieves) and resource (list of wallets) with scope (associated with channel and user id), so an agent can identify the operation. There is no sibling with a near-identical name to differentiate against, though the verb+resource pairing is clear.

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?

It gives a precondition — 'only works if the wallet_fk has been previously assigned to this channel and user id' — which is useful context for when the call succeeds. However, it names no alternative tools and does not say when to prefer this over other access/wallet listings.

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