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

Description adds value beyond annotations by detailing required pre-checks (check_business_tool_access), restrictions (FREE businesses blocked), and UI flow (show warnings). No contradiction with annotations (readOnlyHint=false, destructiveHint=false).

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?

Description is well-structured with two clear paragraphs. The first states purpose, the second gives usage guidelines. It could be slightly more concise, but every sentence is useful and front-loaded.

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?

Despite complexity (11 params, nested objects, no output schema), the description omits parameter meanings and return values. It only covers pre-flight checks. Agent does not know what the tool returns or how to fill in parameters 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 has 11 parameters with 0% description coverage. The description provides no explanation of any parameter, leaving the agent without meaning for fields like title, amount, communityId, pricingConfig, etc. Given low coverage, description must compensate but fails entirely.

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?

Clearly states the verb 'Create', resource 'Zero Link product', and context 'for a community managed by the authenticated Nas.com user'. Distinguishes from sibling tools like update_zero_link or delete_zero_link.

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?

Explicitly instructs to check business permissions, notes that FREE businesses cannot use this tool, and mandates calling check_business_tool_access before collecting inputs. Also specifies to show grace-period warning and verified resubscribe link, and never proceed when access is blocked.

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