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

With no annotations, the description carries the full burden of disclosing behavior. It adds valuable context like the cost ($0.005 USDC per call) and the specific enrichment steps. Yet it does not state read-only nature, side effects, or failure conditions, so transparency is adequate but not thorough.

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 concise sentences, with the core functionality front-loaded and cost neatly appended. Every word earns its place, and there is no fluff.

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 lists the core capabilities and even hints at the output verdict, but with no output schema and no annotations, it lacks details on return structure, parameter prerequisites, and error scenarios. It is minimally viable for an agent to invoke 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%, so the description must compensate. It only mentions 'a domain', giving some meaning to the 'domain' parameter, but the 'techstack' array parameter is completely underexplained. This leaves significant ambiguity for the agent.

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 specifies the tool's purpose with a strong verb ('enrich'), a target resource ('a domain'), and distinct outputs (tech-stack fingerprint, CVE mapping, EPSS, CISA KEV, verdict). This effectively distinguishes it from sibling tools like enrich_domain by focusing on technical security risk.

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 provides clear context that this tool is for security/tech-risk enrichment of a domain, implying when it should be used. However, it does not explicitly mention alternative tools or exclusionary conditions, so it stops short of a top score.

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