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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered by structured data. The description adds nothing on top: it doesn't say whether the gate blocks/allows an operation, what happens on failure, or whether results are cached locally (consistent with openWorldHint=false) — the word "gate" implies blocking but never confirms it.

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?

A five-word tag-and-noun fragment is not conciseness but under-specification — nothing is front-loaded because there is essentially no body text. There is no wasted sentence, but also no sentence doing work.

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 tool with three mandatory string parameters, no enums, no output schema, and zero documented value domains, the description leaves the agent unable to construct a valid call confidently. Annotations cover the read-only/idempotent profile, but the regulatory gate's decision semantics and valid inputs are entirely absent.

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?

Three required parameters (data_type, jurisdiction, operation) at 0% schema description coverage, and the description says nothing about any of them — no accepted values, no defaults, no semantics for how they combine. The only hints are schema `example` fields (user_pii, EU, store), which are schema content, not description content. The description must compensate here and does not.

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?

"[security] GDPR/CCPA compliance gate" names a specific regulatory scope (GDPR/CCPA) and the resource type (gate/check), which does distinguish it somewhat from siblings like compliance_eu_ai_act or compliance_fairness. However, there is no verb describing what the tool actually does (validate? evaluate? block?) and no sentence stating its output or action.

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 gives no when-to-use condition, no prerequisites, and no mention of alternatives. With fifteen compliance_* siblings, the lack of routing guidance is a real cost — the agent must guess whether this is the general pre-flight gate or a niche check. The "[security]" prefix hints at category but not usage.

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