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RetellAI

Interact with RetellAI API

Actions25

Agent → Create

AI-generated

Summary

Create a Retell voice agent by linking it to a Retell LLM and selecting a voice. The operation sends the agent settings to Retell and returns the API response for each input item.

Inputs

  • Response Engine (required) — Provide the Retell LLM ID and response engine type. The available type is Retell LLM (retell-llm).
  • Voice ID (required) — Select the voice for the agent from the available voices.
  • Agent Name — Optionally set a name for the agent; omitted from the request when empty.
  • Additional Configuration — Optional JSON object of extra agent settings using snake_case keys. Defaults to {"voice_speed":1}. Invalid JSON causes an error.

Output shape

A single agent record per input item, as returned by the Retell API.

The operation makes a POST request to /create-agent. With Continue On Fail enabled, an item that errors returns an object containing its error message.

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