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Agent Studio is where you create and operate voice agents:

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Create an agent

  • New agent
  • Start from a template (Healthcare, Insurance, Financial Services, Hospitality & Travel) or create from scratch
  • Configure the system prompt, greeting(s), models, and tools
  • If you plan to dispatch outbound calls or use human transfer tools, attach an outbound connection (see Telephony)
You can also manage agents programmatically — see the Create agent, Update agent, and List agents API endpoints.

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Test in browser

Use the built-in test page for a web (non-telephony) session:
  • https://app.slng.ai/agent-studio/<agent_id>/test
Agent Studio built-in test page
You can also create web sessions via the API — see Create web session.

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Calls

Each agent has a dedicated calls page where you can monitor and review all call activity:
  • Calls list: https://app.slng.ai/agent-studio/<agent_id>/calls
  • Call details: https://app.slng.ai/agent-studio/<agent_id>/calls/<call_id>

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Call list

The calls list shows all calls for an agent (both inbound and outbound), with the most recent calls first. You can filter by status to find active, completed, or failed calls.
Agent Studio calls list showing call history

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Call details

Each call record includes:
  • Status — current call state (e.g., dispatched, active, completed, failed)
  • Phone number — the E.164 number involved in the call
  • Template arguments — the values passed for template variables (e.g., patient_name, practice_name)
  • Rendered prompt — the final system prompt after template variables are resolved
  • Timestamps — when the call was created and last updated
  • Session report — when available, includes transcript and session-level metadata
Agent Studio call details showing status, transcript, and metadata

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Dispatching outbound calls

You can dispatch outbound calls from the Agent Studio UI or programmatically via the API. Outbound calls require the agent to have an outbound SIP trunk configured — see Telephony.
API equivalents: Dispatch call, List calls, Get call. For code examples, see Agent Call Examples.
Everything in Agent Studio maps to public API endpoints. See the Voice Agents API tab for a complete reference.