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

With no annotations provided, the description carries the full burden of behavioral disclosure. It reveals the tool returns a deadline and checklist items, mentions the $200/day penalty and the August 1, 2026 requirement, and includes a 'Not legal advice' disclaimer. However, it does not explain how the deadline is computed, error handling for invalid dates, or the exact output structure, leaving some behavioral ambiguity.

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 well-structured: the main function is front-loaded, followed by the penalty context, a pointer to the paid product, and a disclaimer. It is informative without being overly verbose, though the product advertisement could be considered non-essential for tool usage.

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 lacks crucial details: it does not specify the calculation method for the deadline (presumably registration date + 45 days but not stated), the exact return format (date format, checklist item names), or how to handle dates before the August 1, 2026 requirement. Since there is no output schema, the description must compensate, but it falls short for a compliance-critical tool.

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?

The input schema describes both parameters with 100% coverage. The description adds extra meaning to registration_date by clarifying it is the DROP registration/start date and can be set to today if unsure, which goes beyond the schema. business_name is not given additional context, but that is acceptable given schema coverage.

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 states the tool's function: given a California data broker's DROP registration date, it returns the next 45-day check-in deadline and the first two compliance checklist items. It uses a specific verb and resource, and it distinguishes itself from the full paid kit, which prevents confusion.

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 implies usage for California data brokers needing a quick compliance deadline check. It also hints at when not to use it (when the full 20-cycle calendar or complete checklist is needed, by pointing to the paid product). No explicit exclusions are given, but the context is clear.

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