List Billing Account Projects

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

No annotations are provided, so the description must fully disclose behavioral traits. It only states that it lists projects, omitting important details like pagination behavior (though schema includes pageToken), return format, authentication needs, rate limits, and error handling for invalid billing accounts.

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, concise sentence that is front-loaded and contains no fluff. Every word serves a purpose.

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?

The description covers the basic purpose but fails to explain return values or error cases. Since there is no output schema, the description should have mentioned what fields are returned for each project. It also doesn't address the full context of the 3-parameter inputs beyond the required one.

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 100%, so the baseline is 3. The description adds no additional meaning beyond the schema; it only mentions the billing account name implicitly. The other parameters (pageSize, pageToken) are not described in the description, but they are well-documented in the schema.

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 clearly states the verb 'List' and the resource 'projects associated with a specific Google Cloud billing account'. It effectively distinguishes from sibling tools like `gcp-billing-list-accounts` (lists accounts) and `gcp-billing-get-project-info` (gets details of a specific project).

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 lacks any guidance on when to use this tool versus alternatives, such as when to list projects under a billing account vs. analyzing costs or getting project details. No prerequisites, exclusions, or context for appropriate use are provided.

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