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

With no annotations, the description carries the full behavioral burden and does so thoroughly: it discloses the fee and network, states static analysis only, explicitly says package code is never executed, lists limitations, and describes the caution outcome for unknown coverage.

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 compact, front-loads cost and usage, and every sentence adds distinct value: when to call, what is checked, execution safety, and limitations. No filler or redundant schema repetition.

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?

For a paid safety gate with three simple parameters and no output schema, the description covers pricing, invocation timing, checks performed, safety guarantees, exclusions, and the caution result. An agent has enough to decide and call correctly.

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 0%, but the description compensates by referencing 'npm dependency' (ecosystem), 'package/version' (package and version), and the resolved version check. It doesn't spell out optionality or types, but the three simple parameters are reasonably inferable from context.

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 names a specific verb and resource: it 'checks' an npm dependency for vulnerabilities, typosquatting, and lifecycle scripts. It clearly positions itself as a 'Paid Package Safety Gate' distinct from sibling URL, wallet, content, and transaction tools.

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?

It gives explicit usage context: 'Call before a coding agent installs, imports, or adds an unfamiliar npm dependency.' It does not name alternatives or list exclusions, but the when-to-use guidance is unmistakable.

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