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

With no annotations provided, the description carries the full burden. It clearly discloses that the tool is a pointer and cannot perform bookings or transactions, which is essential behavioral context to prevent misuse. It also implies a read-only operation without stating side effects, which is acceptable for a simple getter.

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 two sentences with no waste. The first sentence front-loads the core purpose, and the second clarifies limitations. Every word contributes to understanding, making it highly concise and well-structured.

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 parameterless getter with no output schema and no annotations, the description covers all essential aspects: what it returns, its purpose, and its limitations. An agent can correctly invoke this tool without additional context.

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 has zero parameters and the schema coverage is 100% by default. Since there are no parameters to document, the description adds no parameter-specific information, but the baseline of 4 applies as per guidelines.

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 states a specific verb ('Returns') and resource ('URL'), and clarifies its purpose ('where a human can start a conversation or book a free consultation'). It also distinguishes itself from sibling tools by noting it is a pointer only, which differentiates it from offerings, facts, and FAQ getters.

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 provides clear usage context by explicitly stating that this is a pointer only and cannot book, schedule, quote, or transact, which tells the agent when not to rely on it for actual transactions. It does not name alternative sibling tools, but the uniqueness of its purpose (contact URL) makes routing straightforward.

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