Marcus AI — voice-controlled AI COO for agencies and small businesses
MARCUSThe AI COO.
Production-ready AI COO with comprehensive context. Knows your meetings, leads, campaigns, and projects before you ask. Voice-first. Talk naturally. Marcus executes.
You talk. Marcus executes.
"Marcus, build me a diamond jewelry website."
Marcus initialized the Web Designer agent, sourced assets, and deployed a React/Next.js frontend to Vercel in under a minute.
"Draft a tweet about the NVDA earnings."
3 options sent to Telegram. One tap to approve. Posted to X in seconds.
"Have Casey email the client about the project update."
Sent from [email protected] with full context from the last conversation.
"Audit my latest project for security vulnerabilities."
Quinn crawled the codebase, identified 3 critical risks, and submitted a pull request with fixes.
Marcus in production.
60+ hrs → 35 hrs / week
Solo founder workload, cut nearly in half
Casey runs outreach + replies. Alex pulls fresh leads each morning. Marcus dispatches dev/QA/security work to the support fleet. Internal use case at Build With Eman.
— Emmanuel Miller, Build With Eman
Autonomous fleet · 100+ tools · 24/7
Knowledge graph never drops a lead
Every lead, every meeting, every commitment, wired into a typed graph. Nightly curation strengthens reinforced patterns and lets stale context fade.
— Emmanuel Miller, Build With Eman
Voice-first · zero context switch
Talk to Marcus while you ship code
Voice-first means you stay in flow. Marcus handles the rest in the background.
— Emmanuel Miller, Build With Eman
Marcus just got significantly smarter.
- Pattern detection — Marcus surfaces slipped commitments, stale relationships, recurring behaviors, and KG anomalies before you ask
- Calendar of Attention (Pro+) — single urgency-ranked queue replacing the 'where do I start' problem every morning
- Nightly memory consolidation — Marcus reflects each night, synthesizing day events into durable insights
- Multi-platform Ops dashboard — single canvas tracking X / YouTube / Instagram / Meta / TikTok in one rail
- ContentOps pipeline — Casey now formats per-platform with Opus Clip integration; one upload, every channel
- Real OAuth across X, YouTube, TikTok, and Meta — no more side scripts to post or read
- Email templates Phase A→C — 8+ business templates with Pro+ self-serve editing
- Follow-ups dedicated tab — triage unanswered threads as a first-class surface, not a side menu
- Voice fixes — thread-routing, content paraphrase, agent-routing parity (text + voice match)
- iOS soft-glass theme + iPhone sidebar drawer — operating Marcus from your phone is a real workflow now
- Per-tenant schema isolation, isolated brain per customer
- Agent-to-agent delegation — sub-tickets across the fleet (Riley → Casey → Quinn) so chains run in the background while Marcus stays the only voice
- get_agent_chain — voice-callable status walk through any ticket and its descendants, no Paperclip context-switch
- Daily-brief chain rollup — completed cross-agent chains surface in the morning brief automatically
Total Control.
Zero Overhead.
Voice-First
Talk to Marcus. He talks back. Low-latency OpenAI Realtime voice loop that actually keeps up with you.
Autonomous Agents
Casey runs outreach, replies, and follow-ups from her own inbox with no babysitting. Alex pulls fresh leads each morning and hands them to Casey with personalized hooks.
Multi-Tenant Brain
One codebase, isolated brains. Your data, your persona, your schema — fully separated from every other tenant.
Self-Correcting Harness
Plan / Execute / Reconsider harness catches banned phrases, skipped tool calls, and hallucinated capabilities in real time. Closed-loop auto-verify is shipping next.
Knowledge Graph
Every conversation, every client, every decision — stored, weighted, and recalled. Tell Marcus something once, he remembers it forever.
Content Pipeline
Casey runs X, YouTube, Instagram, Facebook, TikTok. Approval-first drafting so you own every post.
Multi-Agent Email
marcus@yourdomain, casey@yourdomain, riley@yourdomain — each agent sends from their own branded inbox.
Per-Tenant Cost Tracking
Real-time token and USD logging per client. Know exactly what each customer costs you before you bill them.
Morning Briefings
Marcus greets you every session with what shipped overnight, what follow-ups are overdue, and what's on your calendar.
Honest about who runs solo.
Some agents act independently. Some are background services. Some are dispatch labels for human-in-loop work. Here's the real split, no marketing dressing.
Truly autonomous. Their own inboxes, their own crons, no human-in-loop required for daily operation.
- Casey — Outreach + auto-responder + follow-ups. Sends from her own dedicated email account. Drafts, qualifies, replies, and books — with a real outreach track record running today.
- Alex — Lead research → Casey handoff with personalization. Daily cron pulls fresh prospects, on-demand voice trigger when you want a custom pull mid-day.
Background services Marcus runs without being asked. They surface what matters; you stay in flow.
- Daily morning briefing — What shipped overnight, what's overdue, what's on the calendar.
- Commitment extractor — 10-min tick scans new conversations and pulls promises into the KG.
- Anomaly detector — Hourly scan for slipped commitments, stale relationships, behavior drift.
- Follow-up checker — Daily 9am Telegram alert for any thread you haven't answered.
- Memory curator — Nightly KG ranking — reinforced patterns strengthen, stale context fades.
Specialist roles Marcus dispatches to with SLA tracking. You stay in the loop on each ticket — they don't act independently yet.
- Riley — Dev — code changes, PR shipping, ticket pickup.
- Quinn — Security + QA — vulnerability triage, regression checks.
- Morgan — AI/ML tuning — prompts, evals, embeddings, KG schema work.
- Sam, Drew, Jordan — Available custom slots if your business needs testing, ops, or markets coverage — not active by default.
Closed-loop auto-verify (agents grading their own output before handing it back) is shipping in a parallel branch — not yet live in production. We'll update this page when it ships.
“I built Marcus because I needed a COO I couldn't afford. Now he runs my entire agency.”
Emmanuel Miller
Founder & CEO, Build With Eman
The Marcus walkthrough.
Real install. Real voice. Real tools firing. Nothing scripted.
Marcus vs the others.
Voice-first. Named specialist fleet. Typed knowledge graph. White-label resale. One product covers all four. Nobody else does.
| Feature | Marcus | Hire a VA | ChatGPT + Zapier | Lindy | Manus AI | Voice point-tools |
|---|---|---|---|---|---|---|
| Voice-first interface | human | partial | (phone only) | |||
| Named specialist fleet (autonomous + dispatch) | (2 auto + 6 dispatch) | single hire | byo | single agent | single voice bot | |
| Typed knowledge graph + persistent memory | in their head | chat history | partial | session only | ||
| Proactive engine (auto follow-up + anticipation) | depends on VA | partial | ||||
| White-label / multi-tenant resale | ||||||
| Tool integrations | 100+ | byo | 8000+ (Zapier) | 3000+ | browser-based | phone stack |
| Starting price | $99/mo | $3K+/mo | ~$50/mo + glue time | $19.99/mo | $39/mo | $99/mo |
Sources: vendor pricing pages + Upwork/Belay VA rate ranges, May 2026
It
remembers.
Every conversation, every decision, every commitment, wired into a living graph. Tell Marcus once. He has it forever.
ROI Calculator
What Marcus is worth to you.
Monthly savings
$4,871
Marcus Pro is $299/mo. Do the math.
Need guidance?
Not sure which plan is right? Book a consultation.
Get 1-on-1 help from the person who built Marcus. Walk away with a clear plan, no matter where you are in the process.
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Scalable AI workforce for every stage of growth.
Expand Starter with add-on agents
Pick the specialists you need. Tap to add — your selection carries into checkout. Provisioning a new add-on agent takes 1–2 business days (it's partial customization).
Add-ons subtotal
$0 /mo
On top of Starter ($99/mo)
Already bundled in Pro, Studio, and Enterprise. Add-ons only apply to the Starter plan.