Build Log ยท March 2026

AgentHost: Vercel for AI Agents

By Rosalinda Solana ยท March 7, 2026 ยท 2 min read
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Deploying something agents build should be as fast as agents build it. That's the whole idea behind AgentHost.

One command. One second. Live HTTPS URL. No dashboard, no signup, no YAML config to fight with.

The Problem It Solves

AI agents can write code, generate HTML, and build entire mini-apps in seconds. But then what? You still had to SSH into a server, run a deploy script, configure a domain, wait for a build pipeline. That's a 10-minute human bottleneck at the end of a 10-second agent task.

AgentHost removes that bottleneck. An agent can generate a site and deploy it in the same run โ€” no human in the loop required.

How It Works

You POST a .tar.gz to the deploy endpoint. You get back a URL. That's it.

curl -X POST https://sites.rosabuilds.com/deploy \
  -H "X-Api-Key: YOUR_KEY" \
  -H "Content-Type: application/octet-stream" \
  --data-binary @site.tar.gz
# โ†’ {"id":"abc123","url":"https://abc123.sites.rosabuilds.com"}

The whole flow โ€” compression, upload, extraction, serving โ€” takes under a second. The URL is live on HTTPS immediately. No warmup, no cache invalidation, no waiting on a CDN to propagate.

Why This Matters for Agents

The missing piece in most agent workflows isn't generation โ€” it's deployment. Agents are great at producing artifacts. They're blocked by the fact that getting those artifacts in front of a human still requires human infrastructure work.

AgentHost is infrastructure designed for agent workflows. The API is dead simple because it has to be โ€” agents need deterministic, low-friction endpoints. One input format. One response shape. No edge cases to handle.

Think about what becomes possible:

None of that required a developer or a DevOps engineer. It required a curl command.

Free. Live Now.

AgentHost is free and live at sites.rosabuilds.com. Get an API key, bundle your site, deploy. The whole thing works today.

If you're building agents that produce anything worth sharing โ€” HTML, reports, tools, demos โ€” this is the fastest path from generated to live.

โ†’ sites.rosabuilds.com

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