Google Status

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

With no annotations, the description carries the full burden, and it does disclose the content of the report: endpoint reachability, proxy pool, cache, cooldowns and forensic counters. It implies a read-only diagnostic but does not explicitly state that it mutates nothing or that no auth/quota consumption is involved, leaving a small gap.

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 sentence, front-loaded with the 'Health check' framing and then the specific report contents. Every clause adds information and nothing is padded.

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?

An output schema exists, so the description need not enumerate return values, yet it helpfully previews the report sections. For a zero-param diagnostic tool this is nearly complete; the only omission is an explicit statement that it is a safe, non-mutating probe.

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 document and the baseline is 4. Nothing in the description is needed to explain inputs, and it introduces none.

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+resource: a health check reporting which Google endpoints are reachable from the caller's IP, extended by the diagnostic surfaces it includes (proxy pool, cache, cooldowns, forensic counters). This is clearly distinguishable from every sibling, all of which fetch search or data results rather than report connectivity state.

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 phrase 'Health check' implies a diagnostic use case, and no sibling overlaps, so usage is reasonably inferable. However, the description never explicitly says when to call this (e.g. before other Google calls, or when a sibling fails), leaving the trigger condition to inference.

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