Qu4zr
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Ship small APIs in
minutes, not repos.

90% of the APIs you build are the same: a webhook gets JSON, you transform it, maybe call a service, return JSON. Yet every time it's a fresh repo, secrets, a deploy pipeline, monitoring.

qu4zr: real JavaScript in connected blocks → one click → a live REST API with its own domain, keys, logs and versioning. No server. No Docker. No deploy.

No credit card. Or sign up with email.

✓ Visual API builder ✓ Cloud or on-premise execution ✓ No VPN, no open ports

How It Works

Build APIs visually. Choose where they run — cloud or your infrastructure.

1

Create Blocks

Drag blocks on an infinite canvas. Write JavaScript to call APIs, transform data, or run custom logic.

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2

Connect & Chain

Link blocks together visually. Output flows to input. Build multi-step workflows in minutes.

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3

Choose Execution

Run in the cloud for speed, or use SignalR blocks to execute on your own servers — access internal systems securely.

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4

Deploy as API

One click to publish. Get a production URL with custom domain, API keys, and full request logging.

Need On-Premise Access? SignalR Hybrid Execution

Access internal databases, legacy systems, or sensitive data — blocks execute on your infrastructure while you design in the cloud.
No VPN. No firewall rules. No exposed ports. Just a simple outbound connection.

Example: a public endpoint that runs an internal SQL Server stored procedure — no VPN, no inbound firewall rule.

1

Public webhook

An HTTPS request hits your qu4zr endpoint.

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2

SignalR block

qu4zr invokes your runner over its outbound SignalR connection. The C# handler — which you (or the AI assistant) wrote, and which you reviewed, compiled and run yourself — executes on your server and calls the internal stored procedure.

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3

JSON back

The result returns through the public endpoint. The cloud never connects into your network.

SignalR real-time architecture

Describe what you want — the AI authors the C# handler and stands the runner up. You approve the sensitive steps.

🤖

AI-Authored, One-Command Setup

The AI assistant writes the C# handler and — with your OK — downloads, builds, onboards and launches the runner on your machine. No template to hand-edit; the handler is baked into the download.

🖥️

Full Local Access — Your Code

The handler runs unsandboxed on your machine: query internal databases, read local files, reach the internal network. Connection strings stay in the runner's local config — never sent to qu4zr or the AI.

✅

Test, Then Keep It Always-On

Run in test mode and the AI compiles & verifies the handler on your machine, iterating until it's green. Then install it as a Windows service / systemd unit so your endpoint survives reboots.

📝

Full Logging

All logs from your local runner are captured and visible in the dashboard. Input, output, and custom logs — everything is tracked.

How Does It Stack Up?

Feature Qu4zr Zapier n8n Pipedream CF Workers
Reach private / on-prem systems internal DB, legacy — no VPN, no open ports ✅ runner on your infra ❌ cloud-only ⚠️ self-host only ❌ cloud-only ❌ cloud-only
Setup Time ~1 min 15 min ~15 min 30 min ~30 min
Real-time Execution ✅ SignalR ❌ Polling ❌ Polling ⚠️ Webhooks ✅ Edge
Visual Programming ✅ ⚠️ Limited ✅ ⚠️ Limited ❌ Code only
Free Tier Generous 100 tasks/mo Self-host only 100 invocations 100k req/day
Pricing $0-$29 $20+ Free + hosting $0-$29 $5+

Start Free. Scale When You Need To.

Free

$0/month
  • ✓ 5 Workspaces
  • ✓ 1,000 Executions/month
  • ✓ 500 API Calls/month
  • ✓ Community Support
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Pro

$29/month
  • ✓ Unlimited Workspaces
  • ✓ 100,000 Executions/month
  • ✓ 50,000 API Calls/month
  • ✓ Priority Support
  • ✓ Custom Domains

Build Simply. Run Anywhere.

Your next API — cloud or on-premise — is 5 minutes away. Free to start.

Create Free Account

Free tier forever. Upgrade anytime. Cancel anytime.