gcp_enable_apis

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

The description mentions that the tool returns an operation name to poll, hinting at asynchronous behavior, which is a key behavioral trait. However, it does not disclose idempotency, error handling, rate limits, or what happens if an API is already enabled. Given no annotations, the description carries full burden but provides only partial transparency.

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 two sentences plus a list of common APIs, front-loading the action and return value. Every sentence is essential, with no wasted words. The structure is clean and easy to parse.

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 and return value but lacks details about polling mechanics, required IAM roles, error scenarios, or limits. With no output schema, more context on what the operation name represents and how to use it would improve completeness. It is adequate but not thorough.

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 input schema already describes both parameters clearly (projectId as string, serviceIds as array with examples). The description adds value beyond schema by listing common API service names, which helps the agent choose appropriate values. With 100% schema coverage, the baseline is 3, and the additional list justifies a 4.

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 action 'Enable one or more GCP APIs on a project' with the specific verb 'Enable' and resource 'GCP APIs on a project'. It distinguishes from siblings like gcp_disable_api and gcp_list_apis, making the tool's unique function immediately obvious.

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?

While the description implies the tool is for enabling APIs and mentions returning an operation name to poll, it does not explicitly state when to use this vs alternatives (like gcp_list_apis or gcp_disable_api) or provide prerequisites (e.g., required permissions, project state). The list of common APIs offers some context but no explicit usage guidance.

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