get_latest_versions

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

With no annotations, the description carries the burden of disclosing behavior. It adds valuable context: parallel processing of up to 100 packages, individual results per package, and error isolation. These details hint at fault tolerance and performance characteristics, which are not visible in the schema. It stops short of specifying rate limits or exact return structure, but for a read-only check tool, this is adequate.

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?

Three concise sentences, each earning its place. The first states the core purpose, the second gives a usage rule and limit, and the third describes behavior and benefit. It is front-loaded with the main idea and contains no redundant filler.

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's simplicity (two well-documented params, no output schema, no annotations), the description covers the essential aspects: purpose, when to use, behavioral traits, and performance rationale. It does not describe the exact return format, but the 'individual results for each package' hint and the context of sibling tools like get_latest_version make the tool's output predictable enough. A slightly richer description of error handling would push it to a 5.

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%: both parameters (packages and registry) have descriptions and the registry has an enum. The description adds context about batch usage and parallelism, but does not add syntax or format details beyond what the schema already provides. This is the baseline for well-documented schemas.

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 states a specific verb and resource: 'Get latest versions for multiple packages simultaneously.' This clearly distinguishes it from siblings like get_latest_version (singular) and check_version_exists by emphasizing the plural, batch nature. The intent is unambiguous.

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?

Provides explicit usage context with a quantitative threshold: 'Use when checking 3+ dependencies' and a capability limit: 'processes up to 100 packages in parallel.' It also justifies why to use it ('Much faster than individual calls'), though it does not explicitly name the alternative tool or mention when NOT to use it. This is clear guidance, but not fully exhaustive.

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