apitaco_get_balance

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

No annotations are provided, so the description carries the full burden. 'Get' reasonably implies a non-mutating read and the USD unit is disclosed, but there is no mention of auth requirements, rate limits, whether the balance reflects real-time or cached data, or the response shape. Adequate but thin for a zero-annotation tool.

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?

Two sentences, zero filler, and the capability statement is front-loaded before the usage trigger. Every clause earns its place.

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 usefully states that the result is a balance denominated in USD, covering the essential return semantics. It omits any detail on precision, currency formatting, or error cases, which is a minor gap for a tool this simple.

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, so there is nothing for the description to disambiguate; the baseline for a parameterless tool applies. The description correctly avoids inventing parameter-like options such as currency selection.

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 ('Get the current Apitaco account balance') and pins the unit ('in USD'), so the agent knows exactly what comes back. It does not explicitly contrast itself with the siblings apitaco_get_usage and apitaco_list_models, though the resource name distinguishes it well enough in practice.

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?

Gives concrete trigger phrasing ('how much do I have left', 'what's my balance'), which maps user intent to this tool directly. It stops short of naming alternatives or exclusions, so the agent must infer that balance questions differ from usage questions rather than being told.

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