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Colloqui is a voice agent platform that lets you build AI-powered phone agents entirely through the API. An agent bundles everything in a single resource — the LLM, the prompt, speech-to-text, text-to-speech, and tools — so there’s no wiring between separate models.

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Key concepts

  • Agents — A single resource containing your LLM, prompt, STT, TTS, and tool configuration.
  • Versioning — Agents follow a draft → publish lifecycle. Edits are mutable; publishing creates an immutable version.
  • Numbers — Phone numbers that route inbound calls to your published agent.
  • Tools — Actions your agent can take mid-call: transfer, hang up, send SMS, press IVR keys, call your APIs, or extract variables.
  • Knowledge bases — Upload documents, URLs, or text so your agent can answer questions grounded in your data.

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Next steps

Quick start

Create and call your first agent in five minutes.

API reference

Explore every endpoint.