phone_get_call_log_details

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The description states it's a read operation ('Get details'), but gives no information about error behavior for invalid/nonexistent IDs, whether the result is null or throws, rate limits, or any permission/auth requirements. For a retrieval tool with zero annotation coverage, this is a meaningful 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?

A single, clean sentence that conveys the core purpose without wasted words. There is no padding or redundancy.

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?

With one parameter, no output schema, and no annotations, the tool is relatively simple, but a description nearly identical to other sibling tools (e.g., 'Get details for a single call log by ID' vs future equivalents for elements/users) leaves the agent without enough to disambiguate or anticipate failure modes. Adequate but minimal for the 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?

There is only one parameter (callLogId) at 0% schema description coverage. The description implies the parameter is the identifier used to fetch the log, but adds no detail about format, provenance (how to obtain a valid ID), or constraints. The baseline should be 4 for a single-parameter tool with no description coverage, but the description's 'by ID' hint does partially map the semantics, so a 3 is fair.

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 clear verb+resource pattern: 'Get details for a single call log by ID.' It clearly states it fetches details for one call log identified by an ID. It's distinguished from siblings like phone_get_account_call_logs and phone_get_user_call_logs by the 'single... by ID' qualifier, though it doesn't explicitly differentiate from phone_get_call_element which is similar.

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?

No guidance is provided on when to use this tool versus sibling tools like phone_get_call_element or the call history/log listing tools. There's no mention of prerequisites (e.g., needing an ID first obtained from a listing tool) or when one might prefer this over alternatives.

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