automation_timestamp

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

With no annotations, the description carries the full disclosure burden; it does convey the output format (epoch + ISO-8601 UTC), which is genuinely useful behavioral information. However, it says nothing about side effects, determinism, or timezone/locale assumptions beyond 'UTC', leaving the safety profile implicit for a tool that is obviously a read.

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 compact sentence that front-loads the returned value and enumerates both formats with no filler. Nothing in it is redundant.

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 tool with an output schema present and 100% schema coverage, the description is nearly sufficient — the output schema documents the return shape. The one gap is the unresolved overlap with sibling system_now, which an agent cannot resolve from this text.

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 no parameter semantics to explain and the baseline applies. The description correctly does not fabricate inputs.

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 (current time) and specifies the exact two representations returned (unix epoch and ISO-8601 UTC), so an agent knows precisely what it gets. It does not differentiate itself from the sibling system_now, which appears to serve an overlapping purpose.

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 when-to-use guidance, no statement of prerequisites, and no mention of when an agent should prefer this over system_now or why both exist. Usage must be inferred entirely from the name and the noun 'Current time'.

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