Analyse Permission Gaps

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

No annotations are provided, so the description must disclose all behavioral traits. It does not state whether the tool is read-only, what 'current permissions' means (project-level vs. resource-level), or whether it modifies anything. Essential details like output format and side effects are missing, leaving significant gaps.

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 that efficiently communicates the tool's core functionality with no extraneous words. 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?

Given the lack of an output schema, the description should explain return values (e.g., list of gaps, summary) and prerequisites like required IAM permissions to read policies. It does not provide these details, leaving the agent underinformed about the tool's results and dependencies.

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 has 100% description coverage with clear explanations for each parameter. The description adds context by framing the purpose as comparing permissions, but does not significantly enhance parameter meaning beyond what the schema already provides. Baseline 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 the tool compares current permissions against required ones and identifies gaps, using specific verbs 'compare' and 'identify gaps'. It distinguishes itself from siblings like gcp-iam-get-project-policy (which retrieves policy) and gcp-iam-test-project-permissions (which tests specific 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?

The description implies usage for permission gap analysis but provides no explicit guidance on when to use this tool over alternatives like gcp-iam-test-project-permissions or gcp-iam-test-resource-permissions. It does not mention when not to use it or provide context for choosing this tool.

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