It answers the calls you miss, triages the emergency, collects a deposit, books the visit — and physically can't overspend.
🔗 Live — call it yourself: rescuemissedcall.com 🏆 Built for the Hermes Agent Accelerated Business Hackathon · NVIDIA × Stripe × Nous Research
After hours, home-services businesses send emergencies to voicemail — and the customer just calls the next contractor. 74% of after-hours service calls go unanswered. Five missed jobs a week is thousands in booked work, gone.
Forward your line after close. For every missed call, the agent runs a controlled, end-to-end operation — not a chatbot, an operator:
| # | Step | Powered by |
|---|---|---|
| 1 | Answers the call and captures the emergency | Vapi voice |
| 2 | Triages urgency + deposit amount in one structured read | Nous Hermes Agent → NVIDIA Nemotron |
| 3 | Collects a real $49 deposit — money in, before you ring back | Stripe Checkout (test rails) |
| 4 | Books the visit the moment the deposit clears | Cal.com |
| 5 | Can't overspend — an off-policy ad-buy is blocked 403 before any charge |
NVIDIA NemoClaw / OpenShell + policy gate |
Every step is appended to a hash-chained, tamper-evident ledger and a one-click /proof page. The owner reviews the money it brought in — not a pile of tasks.
Most agent demos either talk or spend, never both, and rarely safely. MissedCall Rescue does all three:
- Earns new revenue — a real Stripe deposit collected on the call.
- Spends under policy — it can make a tiny, allowed confirmation spend, but reaching for a $400 off-policy ad buy is blocked with a 403 before any Stripe call is made.
- Sandboxed for real — the Hermes loop runs inside NVIDIA's NemoClaw / OpenShell sandbox with a deny-by-default network policy. Off-policy egress is genuinely refused at the sandbox boundary (a probe to
example.comreturnspolicy_denied), not just gated in app code. - Provable — every action is hash-chained and replayable on the proof page; nothing is staged.
| Sponsor | Used for | Real? |
|---|---|---|
| Nous Hermes Agent | runs the post-call business loop (the real hermes CLI) |
✅ live |
NVIDIA Nemotron (nemotron-3-ultra-550b) |
triages every call with a structured decision | ✅ live |
| NVIDIA NemoClaw / OpenShell | deny-by-default sandbox the agent runs inside | ✅ verified (writeup) |
| Stripe | $49 deposit in, policy-capped spend out (test mode) | ✅ live |
| Vapi · Cal.com | voice front-door · booking | ✅ live |
Missed call ─► Vapi voice ─► Fastify backend
│
├─► Hermes Agent ──► NVIDIA Nemotron (triage: urgency, $ deposit, next action)
│ running inside NemoClaw/OpenShell (deny-by-default egress)
├─► Stripe Checkout ($49 deposit, test rails)
├─► Cal.com (book the visit)
├─► policy.yaml gate ──► 403 (blocks off-policy spend)
└─► SHA-256 hash-chained ledger ─► /proof (tamper-evident receipt)
pnpm install
cp .env.example .env # fill provider keys in your private .env (never committed)
pnpm dev # USE_MOCKS=true runs fully local, no provider calls
pnpm typecheck && pnpm testRun the triage through the real NemoClaw / OpenShell sandbox (requires NemoClaw installed — see writeup):
REAL_NEMOCLAW=true NEMOCLAW_SANDBOX_NAME=hermes-proof \
NEMOTRON_MODEL=nvidia/nemotron-3-ultra-550b-a55b pnpm start
# Hermes triage then executes via: nemohermes <sandbox> exec -- hermes ...
# falls back to a direct Hermes spawn if the sandbox is unavailable.The agent genuinely runs inside NVIDIA's NemoClaw OpenShell sandbox — installed via the official NVIDIA installer, OpenShell 0.0.44 in Docker, inference routed to NVIDIA Endpoints. Proven: a sandboxed Hermes triage returns the correct emergency decision, and an off-policy egress probe is refused with policy_denied. (NemoClaw is alpha / "tested with limitations" per NVIDIA's docs; the integration is flag-gated with a safe fallback so the demo never breaks.)
Built for the Hermes Agent Accelerated Business Hackathon, judged on usefulness · viability · presentation. MissedCall Rescue is a narrow operator a real contractor could switch on tonight: it answers, earns, books, and refuses unsafe spend — with a receipt for every call.