Can I vibecode Thrumble?
KINDA · weekend projectA single inbound receptionist agent is a credible weekend build with LiveKit Agents or Pipecat plus a SIP trunk. Thrumble as a product is larger: agent config UI, knowledge bases, tools, call transfer, outbound campaigns, phone numbers, transcripts, and production telephony. You can DIY the core conversation loop; you still own carriers, media ports, failed calls, and ops.
Build me a focused self-hosted alternative to Thrumble for one inbound business number. Requirements: - Python 3.12 + livekit-agents with one AgentServer worker. Direct provider plugins only · no managed agent host. - Docker Compose: LiveKit Server, Redis, LiveKit SIP, Caddy for HTTPS/WSS. Expose only documented SIP and UDP media ports. - One Telnyx DID + credential SIP trunk. Checked-in inbound-trunk and dispatch-rule JSON that routes calls to receptionist-agent. - AgentSession: Silero VAD, Deepgram STT, gpt-4.1-mini (OpenAI plugin), Cartesia TTS. Secrets only from .env. - Narrow receptionist prompt: answer FAQs from a local knowledge.md, book a callback into SQLite after confirmation, transfer is out of scope. - Persist call id, timestamps, transcript, and outcome to SQLite. JSON logs + /healthz. Recording off by default. - Unit tests for FAQ lookup and callback confirmation; scripted agent tests for interruption and refusal to invent facts. - make setup / make dev / make smoke + docker compose up -d. Smoke test must pass in the LiveKit agent console before a real PSTN call. - README: DNS, TLS, firewall, Telnyx, trunk, keys, test-call steps, and common one-way-audio / SIP auth failures. - Out of scope: outbound campaigns, multi-tenant dashboard, knowledge-base crawler, tool marketplace, call transfer, billing, HA, compliance claims.
$ open in your agent (prompt prefilled, you press enter) or copy it raw
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They pay to go from a demo voice loop to dependable inbound and outbound calling without running SIP, media, agent workers, numbers, campaigns, and monitoring themselves.
xhosted agent builder, knowledge bases, tools, and transfer destinations
xoutbound campaign dialer and contact workflows
xmanaged phone numbers, concurrency, and telephony debugging
xcall logs, recordings, post-call extraction, and analytics
xuptime, support, and multi-tenant workspace polish
Can I vibecode Thrumble?
Kinda. The core of Thrumble is buildable in a weekend with the prompt on this page, but there are real gaps: hosted agent builder, knowledge bases, tools, and transfer destinations, outbound campaign dialer and contact workflows. Read the honest list above before committing.
How much does Thrumble cost?
Thrumble costs about $99/month (Starter, checked 2026-08-05), which is $1188 per year.
What do I lose by replacing Thrumble?
Honestly: hosted agent builder, knowledge bases, tools, and transfer destinations; outbound campaign dialer and contact workflows; managed phone numbers, concurrency, and telephony debugging; call logs, recordings, post-call extraction, and analytics; uptime, support, and multi-tenant workspace polish. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Thrumble?
Yes: LiveKit Agents + SIP (Realtime agent framework; pair with LiveKit Server + SIP for a self-hosted phone stack.), Pipecat (Composable voice pipelines with telephony integrations; you still own deploy and carriers.). Using prior art is also vibecoding; the prompt is for when you want it exactly your way.