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

Annotations already indicate readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is known. The description adds that it is free and requires no credentials, which is useful context, but it does not explain what the five heuristics check for or what the output includes. Since an output schema exists, the description need not document return values, but the lack of detail on the heuristics limits transparency.

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?

The description is two sentences and front-loads the core function. It is concise, though the phrase 'FREE during validation... No key, credits, wallet or preparation needed' is somewhat repetitive and could be tightened.

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?

Given the tool has an output schema and annotations, the description covers the basics: what it does, that it's free, and that it needs input. However, it omits what the five heuristics are, the nature of the input (configuration text), and any indication of the audit's output format. For an audit tool, that leaves a significant gap in helping the agent interpret results.

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 description coverage is 0%, so the description must compensate. It says 'Supply your task in input' but does not explain the nested text field, its 100,000 character limit, or that it should contain the agent configuration text. The term 'task' is misleading, as the field expects the configuration to audit, not a task instruction.

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 says it reviews agent configuration text with five fixed risk heuristics, which is a clear verb+resource. However, the structure of the input (input.text) is glossed over as 'Supply your task in input', and the five heuristics are not named, leaving the purpose only partially clear. Siblings like agents_env_template_check are distinct enough, but the description doesn't explicitly contrast with them.

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 description states it is free and requires no key, but gives no guidance on when to use this tool versus alternatives like agents_env_template_check or agents_tool_name_conflicts. It does not specify use cases or exclusions, leaving the agent to infer from the name.

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