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The AgentCallback Public API lets you upload contact CSVs, create calls, manage voice agents, run campaigns, and look up phone numbers and voices from your own systems.

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Authentication

Every request must include your API key in the x-api-key header.

Get an API key

Generate an API key from Dashboard > API Keys.

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Base URL

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What you can do

Calls

Create outbound calls and retrieve call status and history.

Voice Agents

Create, update, and version voice agent scripts.

Campaigns

Create CSV-backed campaigns, configure multi-attempt workflows, control their lifecycle, and retrieve or export their calls.

CSV uploads

Upload a contact CSV and use its returned file ID when creating a campaign.

Phone Numbers & Voices

List phone numbers and voices available to your organization.