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

Beyond the annotations (write, non-destructive, non-idempotent), it discloses what the tool generates (a code, a legal deadline from art. 12(3), and a list of remaining tasks), that it applies a monthly quota after which recording continues but agent processing stops, and that no message is sent externally. Those side-effects and limits go well past what readOnlyHint/destructiveHint convey.

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 purpose is front-loaded, but the text meanders into quota mechanics, agent roles, and DPO validation in one dense block, with some awkward phrasing ('beyond it, the request is still recorded... only our agents stop'). Several clauses could be tightened without losing meaning.

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 write tool with no output schema, the description covers the important context: the returned deadline and pending steps, the quota behavior, and who validates. Missing is any explicit note on permissions or what happens on repeated submissions for the same request, but overall it is sufficient to 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 100%, so all five parameters are already documented in the schema, including the right enum and the received_on format. The description restates the deadline logic tied to received_on but adds no new syntax or format detail, so the baseline 3 applies.

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?

States a specific verb and resource ('Records a data subject request') and enumerates the six GDPR rights it covers, so an agent knows exactly what gets created. It does not explicitly differentiate itself from siblings like save_processing_record or report_breach, so it stops short of a 5.

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?

Usage context is implied rather than stated: the description clarifies that identity checks and system searches remain the company's responsibility and that nothing is sent to the requester. But it never says when to prefer this tool over prepare_analysis or save_processing_record, and there is no explicit when-not guidance.

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