Set Project ID

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

With no annotations, the description must fully carry behavioral transparency. It does convey that this changes the default project for all operations, but it omits important details such as whether the value persists across sessions, whether the project ID is validated, and whether this overrides an existing default.

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, front-loaded sentence with no filler or repetition. It efficiently communicates the tool's core purpose without unnecessary words.

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 simple one-parameter setter, the description covers the main action and scope. However, missing information about persistence, validation, and how this tool fits into the workflow leaves some gaps for an agent that must select and invoke it confidently.

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 coverage is 100%, and the schema already describes project_id as 'The Google Cloud project ID to set as default'. The description adds no extra meaning beyond the schema, so the baseline score of 3 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 clearly states a specific verb ('Set'), a specific resource ('default Google Cloud project ID'), and the scope ('to use for all operations'). This makes its purpose immediately understandable and easily distinguishable from the sibling 'gcp-utils-get-project-id'.

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 gives no guidance about when to use this tool versus alternatives, when not to use it, or prerequisites such as verifying the project ID exists. There is no mention of using gcp-list-project-ids to discover valid project IDs or that this should be called before other operations.

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