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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so safety is covered. The description adds the meaningful behavioral fact that it enumerates *every* stack (no filtering or paging) and enumerates the returned fields (title, slug, short description, url), which is valuable given there is no output schema.

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?

Two sentences, front-loaded with the action, and the trailing routing pointer is short. The parenthetical example list is longer than strictly necessary but does real disambiguation work for a non-obvious domain term.

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?

With no parameters, no output schema and full annotation coverage, the remaining burdens are the meaning of 'stack', the shape of the result, and the handoff to the single-stack tool — all three are addressed. Nothing an agent needs before calling it is missing.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for no-param tools applies. The description correctly signals there are no filter arguments by saying it lists everything.

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 ('List every privacy stack') and then defines the domain term with concrete examples (starter kit, de-Googling, journalist's kit, Windows hardening), so an agent unfamiliar with 'stack' still knows what it retrieves. It is cleanly distinguishable from dp_get_stack, which retrieves a single stack.

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 closing clause explicitly names the alternative, dp_get_stack, and the condition that selects it ('for one stack's full content'). It lacks any guidance on when a stack is the right entry point versus dp_list_categories or dp_search_tools, so the routing is helpful but not exhaustive.

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