get_call

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

No annotations are provided, so the description carries the full burden. It does disclose one genuinely useful behavioral trait: `cost` is only populated once the call has ended, which tells the agent the field may be empty mid-call. It says nothing about auth requirements, error behavior, or transcript availability timing, so the coverage is partial rather than complete.

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?

Two sentences, front-loaded with the returned fields, and the second sentence spends its words on the non-obvious cost breakdown. The nested parenthetical is slightly dense but nothing is wasted.

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 an output schema present, explaining return fields is partly redundant, so the real added value is the cost-timing nuance. Missing usage guidance and any parameter context leaves it adequate but not complete for a tool whose semantics are otherwise obvious.

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 0% and the single parameter call_id is never mentioned in the description, so no meaning is added beyond the schema. The parameter is self-evident, which softens the gap, but the description contributes nothing to it.

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 names the resource (a call) and enumerates what the caller gets back: status, duration, transcript and cost. It reads as a retrieval tool and is clearly distinct from the plural list_calls and the action siblings (answer, end_rehearsal), though it never states the verb 'get' or explicitly contrasts with list_calls.

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?

There is no statement of when to use this tool versus alternatives such as list_calls, nor any prerequisite (e.g. needing a known call_id). Usage is only inferable from the name and the returned fields.

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