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

The readOnlyHint annotation already establishes this is a safe, non-mutating operation. The description adds useful context beyond that by specifying the content scope: what INITE Club is, what membership adds, and where to start. It does not discuss output format, but for a zero-parameter informational tool that is not a significant gap.

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 a single compact sentence that front-loads the core subject and packs the three key content areas into one readable line. There is no redundancy or filler.

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 low-complexity, read-only, zero-parameter tool, the description covers the essential information an agent needs: what the tool is about, what value membership provides, and where the principal should go to begin. The only slight omission is an explicit statement of what the tool returns, but the description's content summary makes that largely unnecessary.

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 has zero parameters, so there is no parameter documentation burden. Schema description coverage is vacuously complete, and the description appropriately focuses on the tool's informational purpose rather than inventing parameter details.

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 identifies the tool as an informational explainer about the INITE Club, membership benefits, and how a principal starts joining. The title 'How your principal joins' reinforces the purpose, though the description lacks a specific action verb like 'explains' or 'returns' and does not explicitly contrast with sibling tools.

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 is implied: an agent would call this when the principal needs to learn about INITE Club membership or where to begin joining. However, the description never states when not to use it or how it differs from ask_agent and list_experts, leaving the routing decision to inference.

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