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

Beyond the annotations (readOnly, idempotent, openWorld), it discloses staleness semantics (ok/stale/unavailable per section plus read_at/age_ms), the meaning of the `complete` flag, broker UTC offset semantics including the null case, and a prompt-injection warning about `untrusted_text` fields. This is materially richer than what annotations convey.

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?

Three tight sentences, front-loaded with the scope, then staleness rules, then security guidance. No filler; every clause carries actionable information.

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 does the heavy lifting on return shape (sections, statuses, complete, offsets) and safety. It is nearly complete, though it could briefly note ordering or size of a full snapshot; minor gap keeps it at 4.

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 account_id parameter is already documented as coming from list_accounts. The description adds no further parameter meaning, so the baseline 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?

States a specific verb and resource ('One read of the whole account') and enumerates exactly which sections are aggregated (account_information, positions, orders, health, server_time). An agent can distinguish this composite read from siblings like get_positions or get_account_health without opening the schema.

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?

The composite scope implies when this tool is preferable to the individual sibling getters, but no explicit when-to-use or when-not-to-use guidance is given. The agent must infer that this is the aggregate read versus the section-specific tools.

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