List Available Deployment Services

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

There are no annotations, so the description carries the full burden. The verb 'List' implies a read-only operation, but the description does not disclose output format, scope limitations, prerequisites, or potential side effects, leaving the agent with an under-specified behavioral profile.

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 conveys the entire meaning without redundant phrasing or filler. Every word earns its place.

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 parameterless listing tool with no output schema, the description covers the essential purpose. The phrase 'pre-defined deployment permission sets' is slightly ambiguous but not enough to undermine the tool's overall usability.

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, so the baseline is 4. The description's use of 'all' reinforces the expectation that no filtering or input is required, which is sufficient for this parameterless tool.

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 a specific verb ('List') and names a distinct resource category ('GCP services with pre-defined deployment permission sets'). This distinguishes it from generic service-list tools, though it does not explicitly contrast it with siblings such as gcp-iam-validate-deployment-permissions.

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?

No guidance is provided about when to use this tool versus alternatives like gcp-iam-validate-deployment-permissions or gcp-billing-list-services. The intended role in a workflow is left entirely to inference.

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