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

With no annotations provided, the description carries the responsibility of disclosing behavior. It clearly conveys that the tool returns current availability status and contact avenues, including a direct call-booking link, which gives the agent a good sense of what to expect. It does not overpromise or hide side effects.

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 sentence that immediately states what is returned and includes the most important details: current availability and direct contact/call-booking options. There is no wasted wording.

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 zero-parameter tool with no output schema, the description is complete: it names the subject, the current availability scope, the types of engagements, and the contact resources including a call-booking link. An agent has enough context to invoke and interpret the result 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?

The tool has zero parameters, so there is no parameter semantics to clarify. The description adds useful context about the output instead, which is appropriate given no input is needed.

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 uses a specific verb ('Returns') and clearly defines the resource: Khalid Ibne Hasan's current availability for engagements plus contact methods. It is distinct from siblings like get_profile or get_resume because it focuses specifically on current openness and a call-booking 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?

The description implies that this tool should be used when the user wants to know what Khalid Ibne Hasan is currently open to or how to reach him. However, it does not explicitly state when to use it over alternatives such as ask_khalid or get_profile, nor does it mention any exclusions.

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