analyze_control_coverage

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

No annotations are provided, so the description carries the full burden. It discloses that the tool returns a coverage report with details on addressed control families and counts of controls/mappings, which is useful behavioral context. However, it lacks information on potential limitations, data sources, or performance characteristics (e.g., whether it's read-only, requires authentication, or has rate limits).

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 that are front-loaded with the core purpose and efficiently detail the return value. Every sentence adds value without redundancy, making it appropriately sized 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?

Given the tool has 0 parameters, no annotations, and no output schema, the description provides sufficient context for a read-only analysis tool. It explains what the tool does and what it returns, though it could be more complete by specifying data sources or report format. The lack of output schema means the description must cover return values, which it does adequately.

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 0 parameters with 100% coverage, so no parameter documentation is needed. The description appropriately does not discuss parameters, focusing instead on the tool's purpose and output. This meets the baseline for tools with no parameters, as it avoids unnecessary details.

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 ('analyze which NIST control families have FedRAMP requirements') and the resource ('coverage report showing which control families are addressed and how many controls/mappings exist for each'). It distinguishes from siblings like 'list_controls' or 'get_control_requirements' by focusing on coverage analysis rather than listing or retrieving specific requirements.

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 when needing a coverage report of NIST control families with FedRAMP requirements, but does not explicitly state when to use this tool versus alternatives like 'get_control_requirements' or 'list_controls'. No exclusions or prerequisites are mentioned, leaving some ambiguity in context.

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