Voice AI Public APIs in Sparkforge: Features and Setup

By Sparkforge Support Team ·Last reviewed May 3, 2026

Voice AI Public APIs give developers programmatic access to Sparkforge Voice AI: manage agents and actions, pull call logs and transcripts, and trigger webhook workflows. Authenticate with OAuth or a Private Integration Token, then build against the official API docs.

Voice AI Public APIs extend Sparkforge Voice AI past the in-app UI. Developers can manage agents and actions, pull call logs and transcripts, and feed call outcomes into reporting, CRM enrichment, or compliance workflows.

What the APIs Do

Agent and action management: Create, update, and organize Voice AI agents at scale.
Call data retrieval: Pull logs and transcripts for QA, analytics, and compliance.
Webhook integrations: Push Voice AI events into your own systems in real time.

Public APIs vs. Custom Actions

These are different. Voice AI Custom Actions are real-time webhook integrations that fire during a live call, letting the agent interact with external systems mid-conversation. Voice AI Public APIs are the broader programmatic layer for managing Voice AI capabilities and pulling data outside the call.

Retrieve Call Data

Use the call data endpoints to push transcripts and logs into reporting systems, QA reviews, CRM enrichment, or downstream automations. Sparkforge also supports a Transcript Generated workflow trigger if you prefer in-platform automation over external systems.

Webhook-Based Workflows

Webhooks send call outcomes, transcripts, and summaries to your own systems without manual review. Pair them with workflow Custom Webhook actions or Voice AI Custom Actions depending on whether you need post-call or in-call behavior.

Current vs. Planned Capabilities

Knowledge Base Integration for Voice AI agents is live today through the Voice AI configuration UI. Knowledge Base Support via the Actions API and a future Voices API are planned but not yet released — treat them as roadmap, not current behavior.

Setup Path

Confirm your Voice AI agents are configured and operating in Sparkforge.
Review the Voice AI Public APIs overview to understand the capability scope.
Open the Sparkforge API Documentation for authentication, endpoints, rate limits, and OAuth setup.
Review Private Integrations if you need server-to-server access for internal tooling.
Map your use case — agent provisioning, transcript export, webhook ingestion, or live-call integration — before writing code.
Build and test in a controlled environment, then validate transcript retrieval and webhook delivery before broader rollout.

Frequently Asked Questions

What can I do with Voice AI Public APIs today?

Manage agents and actions, retrieve call logs and transcripts, and connect real-time webhooks to your workflows.

Are Voice AI Custom Actions the same as Voice AI Public APIs?

No. Custom Actions are real-time webhook integrations that run during a live call. Public APIs are the programmatic layer for managing Voice AI and pulling data outside the call.

Is Knowledge Base support via the Actions API available?

Not yet. It is documented as a future capability. The existing Knowledge Base Integration for Voice AI agents is configured in-app, not via the Actions API.

Can I use Voice AI call data in automations?

Yes. Use the Transcript Generated workflow trigger inside Sparkforge or pull transcripts via the API for external systems.

Where do I start if I want to connect Voice AI to my own app?

Start with the Sparkforge API Documentation. If you need a secure server-to-server connection, review Private Integrations rather than building a public Marketplace app.