Festival Group Planning Assistant

A voice-based AI assistant that helps friend groups coordinate festival trips through phone conversations. Users call in to form groups, browse festival catalogs, track members, and manage plans using natural dialogue. The agent handles inbound calls, identifies callers by phone number, and uses tools to save groups, members, festivals, and artists to a Postgres database.

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The numbers

latency—

cost / min—

frameworkPipecat

The stack

telephonyTwilio Voice

speech-to-textCartesia STT

llmClaude Haiku 4.5

text-to-speechCartesia Sonic-3

System prompt

No prompt published.

Config

config.json

{
  "tools": [
    {
      "name": "save_group",
      "description": "Persists a new friend group to the database"
    },
    {
      "name": "save_member",
      "description": "Adds a member to a group"
    },
    {
      "name": "save_festival",
      "description": "Associates a festival with a group"
    },
    {
      "name": "save_artist",
      "description": "Records artist preferences for a group"
    },
    {
      "name": "query_database",
      "description": "Natural-language query tool via SQL sub-agent (Claude Haiku) to answer conversational questions about groups, festivals, and members"
    }
  ],
  "vad": "Silero",
  "observability": "Langfuse via OpenTelemetry OTLP",
  "turn_detection": "LocalSmartTurnAnalyzerV3",
  "local_dev_transport": "Daily WebRTC"
}

Tools

save_groupPersists a new friend group to the database
save_memberAdds a member to a group
save_festivalAssociates a festival with a group
save_artistRecords artist preferences for a group
query_databaseNatural-language query tool via SQL sub-agent (Claude Haiku) to answer conversational questions about groups, festivals, and members

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