Phase B: Agency-First AI Infrastructure

Build AI Agents Once.
Deploy Across Every Client.

KILN is the white-label AI agent platform built for agencies. Multi-tenant by design. Multi-channel by default. Bring your own keys. Stripe-Connect billing built in.

Start FreeOr talk to the founder
Built in GermanyGDPREU-hosted50 free credits / month

The Agency Problem

AI consultancies hit the same wall

Building from scratch every time

Every new client means rebuilding the same agent infrastructure. Workflows, integrations, knowledge bases — repeat for each project.

No way to charge recurring

You ship the agent, get paid once, and lose the client. No SaaS-style monthly revenue. No compound growth.

Can't scale beyond 5 clients

Managing infrastructure across multiple clients without consolidation makes scaling impossible. Hidden cost: your time.

How It Works

Build once. Deploy for every client. Charge recurring.

01

Build agents in your master workspace

Visual editor. 18+ node types. Multi-agent orchestration. Self-learning RAG. Multi-channel from day one.

Trigger: New Lead
Score Lead
Hot → CRM
Cold → Email
02

Spin up sub-orgs for each client

One click creates a dedicated workspace per client. Full data isolation. Their branding. Custom domain. They log in to “their” platform — not yours.

AAcme Corpai.acme.com
BBeta Studiosai.beta.io
GGamma Incai.gamma.co
03

Charge them monthly via Stripe Connect

You set the price. Client pays you. API costs go through their BYOK keys. You keep 100% of the margin on KILN access.

Monthly recurring
€0/mo
Margin
95%
Sub-orgs
12 active
Net this month€0
Result

One platform powers 0+ AI deployments. 50+ recurring revenue streams. Zero per-client maintenance.

Everything You Need

Built for agencies that ship AI to production

Multi-Agent Workflows

Visual drag-and-drop editor. 18+ node types. Compose agents that talk to each other. Conditional logic. Parallel execution. Built for serious orchestration.

Trigger
Agent
If/Else
Notion
Slack
Webhook
Learn more

White-Label Sub-Orgs

One platform, every client gets their own workspace. Custom domain. Custom branding. Full data isolation. Your client sees ai.theirbrand.com — never KILN.

AAcme Corpai.acme.com
BBeta Studiosai.beta.io
GGamma Incai.gamma.co
Learn more

Multi-Channel Deployment

Voice (phone), WhatsApp, Email, Web-chat — one agent, every channel. Switch channels mid-conversation without losing context. Built on Twilio + Vonage.

Voice● Live
WhatsApp● Live
Email● Live
Web● Live
Learn more

BYOK + MCP + A2A

Bring your client's API keys. Connect 500+ tools via MCP. Agent-to-Agent protocol via Google's open standard. No vendor lock-in. No tool is off-limits.

Anthropic
sk-ant-…
OpenAI
sk-…
Gemini
AI…
Learn more

Built for serious agencies

Self-Learning Knowledge Base

Agents learn from interactions. Suggest knowledge updates automatically. Less manual maintenance, smarter agents over time.

Agent Teams (Hierarchical)

Head → Coordinator → Executor patterns. Compose hierarchical teams that work autonomously on complex tasks.

Agent Memory (Persistent)

Agents remember visitors across sessions. Personalized conversations. Context that builds over time.

Stripe-Connect Billing

Built-in agency billing. Charge sub-orgs monthly. One Stripe account, N client subscriptions. Auto-invoicing.

Custom Domains per Sub-Org

ai.acme-corp.com instead of acme.kilnbase.com. Full DNS control. SSL automated. Your brand or theirs.

Lead Scoring & Actions

Score leads automatically. Trigger emails, webhooks, or CRM updates. Built-in funnel logic.

Approval Workflows

Human-in-the-loop gates. Agents pause before critical actions. Full control, zero risk.

Audit Trail (GDPR)

Complete history of every action, decision, data access. 1-year retention. GDPR-ready audit logs.

Production-ready infrastructure

EU-hosted + GDPR-native
RBAC: 5 Roles built-in
SLA Monitoring + Uptime
Real-time Cost Controls
Webhooks + REST API
Version Control for Agents

Why KILN Exists

Hi, I'm André. I'm building KILN.

Solo founder
0 funding
Built in public
v1.0 shipped

I'm a 25-year-old founder from Germany. Solo. No co-founder, no funding round, no team of engineers. Just me, building infrastructure for agencies that want to ship AI.

I started Hephaistos Systems after seeing the same pattern at every AI agency I talked to: brilliant builders losing money because they had no way to charge recurring. They'd ship a custom agent for €5,000, take the money, and never see the client again.

KILN solves that. Build once. Deploy across your client base. Charge monthly. Keep the relationship — and the revenue.

I'm building this in public. If you're an agency owner who wants to shape where this goes, talk to me directly. I read every email, every DM. No SDR will reply on my behalf — it's just me.

— André
André Bäcker, Founder · Hephaistos SystemsOsnabrück, Germany
Email me directlyFollow on XConnect on LinkedIn

Pricing

Simple pricing. No surprises.

Start free. Upgrade when you have your first client. Scale as you add more.

Free

For testing

0€/mo

  • 1 AI agent
  • 50 AI credits/month
  • 1 knowledge base (5MB)
  • KILN branding
Start Free

Pro

For solo builders

97€/mo

  • 3 agents
  • 2,000 AI credits/month
  • 5 knowledge bases (50MB)
  • Multi-channel deployment
  • White-label widget
  • Email support
Start Pro

Business

For growing teams

297€/mo

  • 10 agents
  • 5,000 AI credits/month
  • Unlimited knowledge bases
  • Full white-label
  • Multi-channel including Voice
  • Agent cloning
  • Priority support
Start Business
Most Popular for Agencies

Agency

For AI agencies

497€/mo

  • Unlimited agents
  • 15,000 AI credits/month
  • Unlimited sub-orgs (white-label per client)
  • Stripe Connect billing
  • Custom domains per sub-org
  • Multi-client management
  • Dedicated support
Start Agency Trial

Need a custom setup or done-for-you service? Talk to us →

FAQ

Questions agencies ask

Don't see your question? Ask the founder →

Yes. KILN is EU-hosted, GDPR compliant, with full data isolation between sub-orgs. Each client's data stays in their workspace — no cross-tenant leaks possible.
Each sub-org gets its own custom domain (e.g., ai.yourclient.com), branding (logo, colors), and login URL. Your client sees “their” platform. You manage everything from your master dashboard.
Yes — BYOK is built in. Your clients can use their own Anthropic, OpenAI, Gemini, or Groq keys. They pay API costs directly to the provider. You charge them for KILN access. You keep 100% margin.
GHL is a CRM with AI bolted on. KILN is AI-first. We focus on multi-agent workflows, MCP/A2A protocol support, and BYOK. We're built for AI consultancies, not marketing automation generalists. Plus: EU-hosted, GDPR-native.
n8n is a general workflow tool. KILN is purpose-built for AI agents with native multi-agent orchestration, RAG, voice, and white-labeling. We're not better at workflows in general — we're 10× better at AI agent workflows specifically.
Yes. Each sub-org has its own login URL (e.g., ai.client.com/login). Your client sees only their data. They never see KILN branding if you don't want them to.
Two options: (1) Start free and figure it out yourself — full docs and YouTube tutorials. (2) Book a 30-min founder call and I'll walk you through your specific setup. (3) Done-for-you setup service available for agencies who want us to build the first 3 agents.
Yes. Agents support 95+ languages including all DACH variations. The KILN dashboard itself is currently English-only — German localization coming Q3 2026.
Fair question for a solo-founder startup. All workflows are exportable as JSON. All knowledge bases are downloadable. You own your data. Plus: open-sourcing KILN core is on the roadmap if Hephaistos Systems ever runs out.

Ready to Ship

Build your AI agency. Today.

Free forever for testing. Start charging clients next week.

Start FreeTalk to founder
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