phone_get_call_element

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

No annotations are provided, so the description carries full behavioral disclosure burden. It describes a read/get operation but doesn't state whether this is safe, what happens if the ID is invalid, whether it returns details of all element types, or how it relates to call log retrieval. The examples (hold, transfer, recording marker) provide some context value, but there are significant disclosure gaps for a get operation with zero annotations.

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?

Single sentence, efficient, with useful parenthetical examples. Zero waste. However, it could have used the space to add parameter or usage clarity while staying concise.

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 zero annotations, zero schema description coverage, and no output schema, the description is thin for a tool with 1 required parameter. It lacks guidance on where callElementId comes from, what the returned element looks like, and how this relates to the sibling call-log/call-detail tools. A single sentence is inadequate for a tool with so little structured metadata supporting it.

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 coverage is 0%, so the description must compensate for the single undocumented parameter callElementId. The description does mention 'by ID' which partially clarifies that callElementId is an identifier of the element, but it doesn't specify the ID format, origin (where to obtain it), or constraints. Baseline for zero coverage is low, and description adds only minimal clarification.

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+resource ('Get a single call element... by ID') and gives helpful examples of what a call element is (hold, transfer, recording marker). It distinguishes from sibling list-type tools (call_history, call_logs, transcripts) by clarifying this retrieves a single element by ID. Could be stronger but is clear and specific.

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 on when to use this vs alternatives. The description doesn't say when you'd want a call element versus call logs, history, or transcripts. It implies you'd use this after knowing a callElementId, but doesn't state any prerequisite steps or situations where a sibling is more appropriate. No exclusions or alternatives named.

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