Set Project ID

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

No annotations are provided, so the description carries full burden. It mentions setting a default for 'all operations,' implying persistence or session-wide effect, but fails to disclose critical behaviors: whether this requires specific permissions, if changes are reversible, potential side effects on other tools, or error handling for invalid project IDs.

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 zero waste—every word contributes to understanding the tool's purpose and scope. It efficiently communicates the essential information without redundancy.

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?

Given no annotations, no output schema, and a mutation tool (setting a default), the description is incomplete. It lacks details on behavioral traits, error conditions, or what happens after invocation (e.g., confirmation message, persistence duration). For a tool that modifies state, this gap is significant.

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%, with the parameter 'project_id' fully documented in the schema. The description does not add meaning beyond the schema, as it only reiterates the purpose without detailing format constraints or validation rules. Baseline 3 is appropriate given high schema coverage.

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 specific action ('Set') and resource ('default Google Cloud project ID'), with explicit scope ('for all operations'). It distinguishes from the sibling tool 'gcp-utils-get-project-id' by contrasting set vs. get operations.

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 implies usage context by stating 'to use for all operations,' suggesting this tool configures a default for subsequent calls. However, it lacks explicit guidance on when to use alternatives or prerequisites, such as authentication requirements or project validity checks.

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