Overview

API reference

The programmatic layer for HollrAI
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The HollrAI API gives your application programmatic control over AI calling.

HollrAI itself is a full platform for building and deploying AI call agents. Campaigns and agents are configured in the platform at app.hollr.ai. This API surface covers two things: triggering calls under an already-configured campaign, and reading the conversation records those calls produce.

Base URL

https://api.hollr.ai

Authentication

API requests use the hollr-api-key header. See authentication for details.

What’s covered

Calls

Trigger a single outbound call or a batch of calls

Conversations

Retrieve and manage records created from calls

Start with the Calls API

Before using the API, create a campaign and its agent in app.hollr.ai.

Your application only needs to know the campaign ID and the phone number to call:

Your application
      │
      ▼
POST /v1/call/make-call
      │
      ▼
HollrAI campaign + agent
      │
      ▼
AI phone conversation
      │
      ▼
Conversation record

Use the quickstart for the complete flow.

API Explorer

The API reference includes an interactive API Explorer where you can test requests against your API. Keep your API key private and only use credentials in environments where it is safe to make real requests.

Errors and rate limits

See errors and rate limits for the standard error shape, HTTP status codes, and documented request/concurrency limits.