important-eve-12094
02/23/2026, 8:45 AMtall-airline-16756
02/23/2026, 8:45 AMtall-airline-16756
02/23/2026, 8:46 AM{{metadata.user_name}}.
◦ Optionally set a Welcome Greeting that plays when a user joins.
1. Select models
◦ Choose STT, LLM, and TTS models supported by LiveKit Inference (for example Deepgram, GPT-family models, ElevenLabs).
1. Add actions (tools)
◦ Add HTTP Tools to call external APIs (GET/POST/PUT/PATCH/DELETE). You can include headers, params, and mark tools as silent.
◦ Add Client Tools to call frontend RPC methods.
◦ Optionally connect an MCP server so the agent can discover additional tools.
1. Use variables and secrets
◦ Access metadata with {{metadata.field_name}}.
◦ Use secrets stored in the builder with {{secrets.SECRET_NAME}} for API keys in tool headers.
1. Preview
◦ Use the built-in live preview to talk to your agent in the browser. Preview sessions use Inference credits but don’t count as production sessions.
1. Deploy
◦ Click “Deploy agent” to make it a production LiveKit Cloud agent (compatible with telephony, observability, and dispatch).
1. Test and monitor
◦ Use the agent’s “Test Agent” public sandbox link for demos.
◦ Monitor production sessions in Agent Insights / Sessions dashboard.
1. Export to code (optional)
◦ Click “Download code” to get a Python project ZIP (includes AGENTS.md and MCP server integration). If you deploy the code version, delete the builder agent to avoid duplicate requests.
Limitations to keep in mind:
• Builder does not support Workflows, handoffs/tasks, virtual avatars/vision, realtime models/plugins, or unit testing.
Billing note:
• There’s no extra cost to use the builder; normal LiveKit Cloud quotas and limits apply.
Tell me which step you want to dive into (examples: configuring HTTP tools, writing the agent instructions, setting up secrets, or exporting and running the Python project) and I’ll guide you through it with exact actions.
Sources: Agent Builder | LiveKit Documentation | Announcing Agent Builder: a pathway to code | LiveKit DevDay | LiveKit