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

Annotations already declare readOnlyHint, idempotentHint and non-destructive, so 'Read only' merely repeats structured data. The real added value is the enumeration of returned record fields, which is the only return-shape information available given there is no output schema; 'the next time' is left vague (next execution time?) which keeps it short of a 5.

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?

Very short and front-loaded on the resource, but it is a sentence fragment with no verb and an oddly placed trailing 'Read only' that duplicates annotations. Little waste, but the structure reads like a field dump rather than a coherent statement of purpose.

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 single-parameter read tool with annotations covering the safety profile and a description covering return fields, the essentials are present. Gaps remain around filtering scope (all vs. active schedules), ordering, and pagination behavior, which an agent would need to interpret results correctly.

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 schema already specifies the wallet address format on Robinhood Chain. The description only references `wallet` in backticks without adding format, validation, or scoping meaning beyond the schema, so the baseline of 3 applies.

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 names the resource (the buy plans / schedules of a given wallet) and enumerates the returned fields (token, amount, day, hour, time zone, status, next time), which lets an agent distinguish it from write-side siblings like schedule_buy and cancel_schedule. It lacks an explicit verb ('List'), leaving the phrasing as a noun fragment, but the intent 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?

There is no statement of when to call this versus alternatives, no prerequisite that a wallet must have schedules, and no note on whether inactive or cancelled schedules are included. Usage is only inferable from the tool name and resource.

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