get_index_data

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

No annotations are provided, so the description carries full burden for behavioral disclosure. The description only states what the tool does at a high level without mentioning authentication requirements, rate limits, error handling, response structure, or whether this is a read-only operation. For a tool with 10 parameters and no annotations, this is insufficient.

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, efficient sentence that states the core purpose without unnecessary words. It's appropriately sized for a tool with comprehensive schema documentation, though it could benefit from additional context about when to use it versus sibling tools.

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?

Given the tool's complexity (10 parameters, no output schema, no annotations), the description is inadequate. It doesn't explain the return format, error conditions, authentication needs, or how this tool differs from similar sibling tools. The high parameter count and lack of output schema mean users need more guidance than what's provided.

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 description coverage is 100%, so the schema already fully documents all 10 parameters with detailed descriptions, examples, and constraints. The description adds no additional parameter information beyond what's in the schema, meeting the baseline expectation when schema coverage is complete.

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 states the action ('Get') and resource ('index data from Israel Statistics API'), providing specific purpose. However, it doesn't differentiate this tool from sibling tools like get_all_indices, get_main_indices, or get_main_indices_by_period, which likely retrieve similar data with different scopes or filters.

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 no guidance on when to use this tool versus alternatives. With multiple sibling tools that likely retrieve index data (e.g., get_all_indices, get_main_indices, get_main_indices_by_period), there's no indication of how this tool differs in scope, filtering, or use cases.

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