validate_ptr_records

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the operation ('Validate') without detailing whether it modifies records, what the validation checks (e.g., format, correctness), or what the output or error behavior is. This lacks transparency for a tool that could have side effects or require specific permissions.

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 a single, clear sentence that front-loads the action and resource. It is appropriately sized for a tool with no parameters and no complex behavior, and every word earns its place without unnecessary verbosity.

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's simplicity (0 params, no output schema, no annotations), the description is adequate for basic understanding but incomplete. It does not explain what validation means, what the return value looks like, or whether it affects any state. Since there is no output schema, the description should have provided more context on the expected result, so it falls short of full completeness.

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 has zero parameters, and the schema description coverage is complete (100%) vacuously. The description adds a slight semantic nuance with the word 'current', indicating it operates on existing records, but since there are no parameters, no additional parameter meaning is needed. Baseline 4 is appropriate.

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 uses the specific verb 'Validate' and clearly identifies the resource as 'current PTR (reverse DNS) records'. This distinguishes it from sibling tools like validate_dkim or validate_spf, and makes the tool's purpose unambiguous.

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 implies that the tool is used when you need to validate PTR records, but it provides no explicit guidance about when to use it versus alternatives like get_dns_records or other validation tools. There is no mention of prerequisites or exclusions, so usage is only implied.

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