Google Help

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

No annotations are provided, so the description carries the full behavioral burden. It discloses the topics covered (including a 'status contract' and 'safe usage patterns'), which signals it is a read-only reference, but it never explicitly states that it has no side effects or how the returned guidance should be consumed. For a zero-parameter read tool the risk is low, so this gap is modest.

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?

A single front-loaded sentence with a trailing imperative; every clause (tool map, engine semantics, status contract, safe patterns) adds distinct information and none is wasted.

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 parameters and an output schema present, the description needn't explain return values, and it adequately frames what the call yields and when to make it. Nothing critical for correct invocation is missing.

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 per the calibration this defaults to a baseline of 4. The description adds no parameter detail, but there is nothing to document.

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 (an agent-facing usage guide) and enumerates its contents: tool map, engine semantics, status contract, and safe usage patterns. This clearly separates it from all the search/quote/translate siblings, which perform actual lookups rather than explaining the toolkit. It stops short of a crisp 'returns documentation about X' verb, keeping it just below a 5.

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?

'Read this before experimenting' gives explicit when-to-use guidance pointing at the pre-use/onboarding moment, which is exactly when an agent would want a tool map. It doesn't name an alternative or an exclusion, but for a meta help tool no real alternative exists, so the omission is minor.

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