retell_create_batch_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 states the action ('Schedule a batch of outbound phone calls') but does not disclose side effects, permissions needed, scheduling behavior (e.g., immediate vs. delayed), or the fact that calls will actually be placed. This is a significant gap for a mutation/scheduling tool.

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 two concise sentences with no waste. It front-loads the primary purpose and immediately covers key task details. Every word earns its place.

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?

The tool has 4 parameters and no output schema. The description gives a general overview of batching and per-call options, but it does not mention the trigger_timestamp behavior (scheduling delay vs. immediate), what the response returns, or other important context like required agent setup. Given the schema covers parameter details, the description is minimally adequate but not fully complete for a batch scheduling tool.

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 documents all parameters. The description adds a brief note that tasks specify a destination number and may include overrides/dynamic variables, which somewhat overlaps with the schema. This provides marginal value beyond the schema, so the baseline of 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?

The description clearly states 'Schedule a batch of outbound phone calls', which uses a specific verb and resource. The word 'batch' distinguishes it from single-call siblings like retell_create_phone_call and retell_create_web_call, making the purpose unambiguous.

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 implies usage for scheduling multiple calls at once, but it does not explicitly mention when to choose this tool over alternatives like retell_create_phone_call or retell_create_batch_test. There are no exclusions or alternative references, so guidance is only implicit.

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