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

With no annotations at all, the description carries the full behavioral burden. It usefully discloses that a Bearer token is required, but never states whether the operation is read-only, what the response shape is, or whether any rate limits or scopes apply.

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?

It is a single short sentence with no padding, but the brevity reflects under-specification rather than tight writing — the core action (fetch/list) is never stated, and the auth note is tacked on in parentheses.

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 zero-parameter, no-output-schema tool, the sentence does hint at the returned content (agents, plan status, inventory), which is the most valuable information available. However, with no annotations and no output schema, the description should say more about the read-only nature and return structure before it counts as complete.

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?

The tool takes zero parameters and the schema is fully described, so there are no parameter semantics to explain. The description adds nothing needed here and omits nothing.

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 resources returned (agents, plan status, inventory) but supplies no verb, so the agent must infer that this is a retrieval of account-level data. It is distinguishable from the sibling tools (floors, limits, pricing, certificate verification) only by the noun list, not by any explicit statement of what the tool does.

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 guidance on when to call this versus continuity_limits, continuity_floors, or the other siblings, despite the account/plan data plausibly overlapping with limits and pricing. No prerequisites, exclusions, or alternative routing are given.

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