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

With no annotations, the description carries the burden, and it does disclose one genuinely non-obvious behavioral trait: the call has a side effect of keeping the token session alive. It omits whether the call requires valid auth, what happens when the token has already expired, whether it is idempotent, and what the returned status values mean.

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 duplicated verbatim, and the JSDoc-style @param/@return tags bloat the block without adding structure the agent can use. The one high-value instruction (call regularly) is buried below the repeat.

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?

No annotations and no output schema, so the description should do more; it notes the return is "a json object" but not what status information comes back or how errors surface. It is roughly adequate for invoking the call, but thin for interpreting the result of a session-keeping operation.

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; it at least names all three parameters and gives their provenance (api_key allocated to the application; token and wallet_fk from /access/login). That is useful sourcing information but no format, type, or validation detail, so it only partially offsets the empty 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 (verifies) and resource (wallet token status), plus a secondary effect (keeping the token session alive). That distinguishes it meaningfully from sibling verify-type tools such as wallet_google_auth_verify or wallet_kyc_check, though it never names those alternatives explicitly.

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?

"Call this regularly to keep the token active" gives a real usage cue about cadence, which is more than most definitions offer. However, it offers no when-not guidance, no conditions for choosing this over other wallet endpoints, and no failure/renewal path if the token is already dead.

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