Stackvex

/services

One category, built properly: production AI.

We build and run AI agents and features that take real action — under one roof, to one engineering bar. Guardrails, evals, monitoring, and code you own on every engagement.

01Resolve, don’t deflect-and-pray.

AI Support Agents

Most “AI support” only answers questions. A real support agent looks up the customer, applies your policy, and takes the action like refunds, account changes, status then escalates cleanly when a human is genuinely needed.

What you get

  • Tier-1 tickets resolved end-to-end, not just acknowledged
  • Refunds, account changes, and lookups taken as real actions
  • 24/7 coverage that sounds like your product, not a generic chatbot
  • Clean escalation with full context when a human is needed

How we build it

  • Retrieval

    RAG over your docs and policies, with citations on every claim.

  • Actions

    Tool calls into Stripe, your database, and your help desk (Intercom, Zendesk, Front).

  • Guardrails

    Confidence thresholds, action allow-lists, and confirmation before anything irreversible.

  • Evals

    Scored against your historical tickets in shadow mode before it touches a customer.

Ticket #4821

Duplicate charge · Pro plan

Resolved

Customer · 10:01

I was charged twice for October. Can you fix this?

Support agent · 10:02

You're right — there were two October charges on your Pro plan. I've refunded the duplicate $49.00 to your card; it should land in 5–10 days.

Behind this reply: looked up cus_Pf21Qa · matched 2 October charges · refund ch_3Pdup $49 · closed without escalation

02Never miss a call again.

AI Voice Agents

Demo requests come in at 11pm. Trial users want to speak to someone before they convert. Inbound calls hit when your team is on a flight. A voice agent answers on the first ring, qualifies the intent, and books the slot. So the call doesn't disappear into voicemail.

What you get

  • Every inbound call answered, day or night
  • Callers qualified and booked into your calendar
  • Confirmations and follow-ups sent automatically by SMS
  • Warm transfer to a human the moment it matters

How we build it

  • Pipeline

    Low-latency STT → LLM → TTS over Twilio, with natural turn-taking and barge-in.

  • Actions

    Calendar and CRM tool calls — Cal.com, HubSpot, Salesforce.

  • Guardrails

    Intent capture checks, fallback phrasing, and instant human handoff paths.

  • Evals

    Full transcripts plus scoring on booking accuracy and intent capture.

Inbound · +1 (415) ***-4821

1:47 · intent: schedule consultation

Caller · Do you have availability this week for a consult?

Agent · Thursday at 2pm or Friday at 10am — which works? I'll text a confirmation once we're set.

Caller · Thursday at 2 works.

Thu 14:00 booked in Cal.com · SMS confirmation sent · CRM note filed

03Ship the feature on your roadmap.

AI Feature Build

You have an LLM / RAG / agent feature your product needs — and a team already at capacity. We build it to production standard, integrated into your stack, with evals you can run yourself, and code you own.

What you get

  • The AI feature on your roadmap, actually shipped to production
  • Grounded answers with citations — engineered against hallucination
  • Built into your product, your stack, and your design system
  • Owned by you, with an eval suite you can run on every change

How we build it

  • Pipelines

    RAG, agents, and structured-output systems in TypeScript or Python.

  • Retrieval

    Vector store tuned to your data — Pinecone, pgvector, or your stack.

  • Eval harness

    Faithfulness, accuracy, and latency budgets wired into CI.

  • Deploy

    On your infrastructure (Vercel, AWS), observable end-to-end.

answer-pipeline · CI eval

run #284 · 142 cases

SuiteResultGate
Faithfulness97%pass
Citation accuracy94%pass
Refusal rate100%pass
p95 latency1.2spass

retriever.search(q) → llm.generate(context, guardrails) → citeSources