Stop audio on a live call

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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is covered. The description adds the live-call constraint and the play_audio linkage, but says nothing about behavior when no audio is playing (no-op vs error) or the response shape. Adds some value above annotations, hence a 3.

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 front-loaded sentence that carries the verb, the object, the precondition, and the endpoint with zero filler.

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?

For a simple one-parameter stop action whose mutating/idempotent nature is already declared in annotations and which returns no output schema, the description is nearly complete. Only edge-case behavior (what happens if nothing is playing) is unstated, which is a minor omission.

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% and the description provides no parameter detail, but there is only one parameter (call_uuid) whose meaning and format are self-evident from its name, the required flag, and the pattern in the schema. Minimal gap, so baseline 3 is appropriate.

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?

States a specific verb (stop), the resource it acts on (audio started by play_audio), and the scope constraint (LIVE call), plus the underlying endpoint. This cleanly separates it from siblings like stop_speaking and stop_audio_to_conference_member, which an agent could otherwise confuse.

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?

"started by play_audio on a LIVE call" implies the precondition for use and the pairing with play_audio, which is strong context. It stops short of naming an explicit alternative (e.g. use stop_speaking for TTS playback), so it is clear context without full routing guidance.

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