bach-whatsapp_number_validators

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

No annotations provided, so description carries full burden. Discloses the 25-number limit and country code requirement, but omits authentication needs, rate limits, error handling for invalid numbers, and whether partial failures return individual error codes.

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?

Three sentences efficiently cover capacity (25 numbers), functionality (WhatsApp + Business verification), and input requirements (country codes). No redundancy; every clause earns its place.

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?

Adequate for basic operation understanding given the simple input model, but lacks output format description (especially critical given no output schema exists) and error behavior for malformed numbers or exceeding limits.

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?

Despite empty schema (0 parameters), description states 'provide all numbers along with the corresponding country code,' implying parameters exist. This creates a dangerous mismatch: agents see no schema parameters but description insists input is required, leaving invocation method ambiguous.

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?

Specific verb (verify) + resource (WhatsApp registration and Business status) + scope (up to 25 numbers). The '25 numbers' constraint clearly distinguishes this from single-number validation siblings like 'validate_single_number_via_get_request'.

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?

Implies usage context through the 'up to 25 numbers' constraint, suggesting bulk use cases. However, lacks explicit guidance on when to prefer single-validation alternatives or behavior when exceeding the 25-number limit.

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