Best private HTML hosting for AI agents (2026): 7 tools compared.

Why teams need private hosting for agent output

A coding agent finishing a task rarely stops at code. It writes a migration plan, a test report, a dashboard, a design doc, a PR summary, and the natural way to share any of those is as a rendered HTML page rather than a wall of Markdown in a chat. The volume of that output has gone up sharply, and most of it has two properties at once: it is internal or sensitive, and it is short-lived.

The default tools fit that shape badly. Committing a one-off status page to a Git repo pollutes history and triggers a build. Dropping it on a public URL exposes it to search engines and anyone who guesses the path. What teams actually want is a link they can paste into Slack that works for the people who have it and no one else, created without ceremony, ideally by the agent itself.

What to look for in private HTML hosting

Five criteria separate a host built for agent artifacts from a general static host with a password option bolted on.

• Private by default. Is the link the credential out of the box, or is the site public until you remember to protect it? Default posture matters more than the available toggle.
• Agent-publishable. Can an agent publish via an MCP tool call or a REST API without a human committing and pushing to a repo first?
• Replace-in-place. When the agent revises the content, does the URL you already shared stay stable, or do you get a new link every run?
• Gating depth. Beyond the unguessable URL, can you add a password, an email-domain gate, or end-to-end encryption when an artifact is sensitive?
• Pricing. Is it flat per workspace, or per-seat in a way that punishes adding teammates and agents?

The 7 best private HTML hosts for agent output

1. Stacktree: private-by-default, MCP-native

Stacktree is built around one primitive: an agent calls publish_html and gets back a private URL. Every link is unguessable by default, so the link is the credential, and update_site keeps that same URL stable as the agent iterates. It adds gating layers on top: optional shared password, an email-domain gate verified by magic link, and optional end-to-end encryption where the server only ever stores ciphertext. The first publish is anonymous and lives 24 hours with no account. Pricing is flat per workspace (Free $0, Pro $8/mo, Agent $19/mo), never per-seat, and you can self-host the source on your own Cloudflare. The honest reason it leads this list: of the seven, it is the only one designed from the first commit around an agent publishing private HTML, rather than a human-first or public-first host with agent access added later. Its limits are real, though: it serves static HTML only (no serverless backends), has no in-browser live editor, and workspace-wide SSO is still on the roadmap, with the per-link email-domain gate covering most cases today.

Best for: AI agents publishing private HTML artifacts that should be live in one tool call and updated in place.

2. Tiiny Host: fastest drag-and-drop publish

Tiiny Host is the friendliest way for a human to get a static site or a zip file online. You drag a folder or a ZIP, pick a subdomain, and it is live in seconds, with password protection, custom domains, and form handling available on paid tiers. It is genuinely good at what it does, and for a non-technical person sharing a one-off page it is hard to beat. The gap for agent work is that it is built around the manual upload flow rather than a tool an agent calls, and sites are public unless you turn on a password. For agent loops it is a poor fit; for a human who wants a link in ten seconds it shines. The full comparison lives on the Tiiny Host alternative page.

Best for: a human who wants to drag a folder online fast, with optional password protection.

3. here.now: hosting plus durable agent storage

here.now describes itself as instant web hosting and private cloud storage for AI agents, and it is the closest peer to Stacktree on this list. It has two products: Sites (publish static HTML to a {slug}.here.now subdomain or a custom domain) and Drives (private cloud storage for agent memory, context, plans, and agent-to-agent handoff via scoped share tokens). Anonymous temporary Sites expire after 24 hours, authenticated access uses an API key with an email-code account flow, and it supports custom domains, handles, variables, proxy routes (a static site can proxy to an external API), password gates, and even stablecoin payment-gated Sites. Its genuine edge over Stacktree is Drives, proxy routes, and payment-gated sites. Where it is behind: it does not expose a public MCP server (its own agent-card declares MCP unsupported) and does not use OAuth, so the publish path is its API rather than an MCP tool call, and it lacks an email-domain gate and end-to-end encryption. Details on the here.now alternative page.

Best for: agents that need durable storage and handoff alongside hosting, or payment-gated and proxy-route sites.

4. GitHub Pages (Enterprise Cloud): private docs next to source

GitHub Pages is excellent at one shape of work: long-lived, public static sites that live next to their source code, like open-source documentation. Private Pages does exist, but only on GitHub Enterprise Cloud, where access is gated to verified members of your organization on GitHub. That means every viewer needs a GitHub seat, the unit of access is GitHub users rather than anyone with the link, and there is no private option on the Free, Pro, or Team tiers. For agent artifacts the bigger friction is the workflow: publishing is a commit and a Pages build, not a single tool call, so each iteration adds latency and clutters history. See the private GitHub Pages alternative for the full path.

Best for: long-lived documentation that lives alongside source, gated to your GitHub org on Enterprise Cloud.

5. static.app: polished host with an editor and MCP added on

static.app is a mature, well-built static host for people who manage their own sites, with a live in-browser code editor, built-in form handling, a desktop sync app, and analytics. In 2026 it added an MCP server, a REST API, and a chat assistant, so an agent can publish to it. The difference is positioning: static.app bolts agent access onto a human-first product, and sites are public by default with optional password protection, whereas Stacktree treats the agent tool call as the primary path and is private by default. If a human wants to hand-edit a page in the browser, static.app is the better tool; if the agent is the author, it is not the natural fit. Compared in full on the static.app alternative page.

Best for: human-managed static sites where you want an in-browser editor, forms, and sync, with optional agent access.

6. display.dev: gated company publishing

display.dev focuses on gated publishing for companies, with access controls around who can view a published page. If your need is a polished, branded internal publishing surface with company-level gating and you are not orienting everything around an agent tool call, it is worth a look. For the artifact-shaped, agent-emitted half of the work, where you want an unguessable URL created in one call and replaced in place, Stacktree is the closer fit, but display.dev is a real option for team publishing with access control at its center. The side-by-side is on the display.dev alternative page.

Best for: companies that want a gated, branded internal publishing surface with team access controls.

7. Vercel: full app platform, overkill for one-off HTML

Vercel is a top-tier platform for shipping full web applications: serverless and edge functions, framework integrations, preview deployments, and a build pipeline that is genuinely best in class. For a production app or a marketing site, it is an obvious pick. For private one-off agent artifacts it is heavy: deployments go through a Git push or CLI and a build, private access lives behind platform-level protections and team plans rather than a per-link gate, and there is no single publish tool an agent calls to get a private URL back. It is the right tool for the wrong job here. See the Vercel alternative for agents page.

Best for: production web apps and sites that need a build pipeline, serverless functions, and preview deployments.

Summary comparison

Recommendation by use case

• An agent should publish private HTML in one call. Stacktree. The MCP tool call returns a private URL, and update_site keeps it stable as the agent revises.
• A human wants a page online in ten seconds. Tiiny Host. Drag a folder, get a link, add a password if you need one.
• You need durable agent storage and handoff alongside hosting. here.now. Drives plus proxy routes and payment-gated sites cover ground Stacktree does not.
• You publish open documentation that lives next to your code. GitHub Pages, with Enterprise Cloud if it must be org-private.
• A human edits the site in the browser. static.app, for its live editor, forms, and sync.
• You want a gated, branded internal publishing surface. display.dev, built around company-level access control.
• You are shipping a full application with a build pipeline. Vercel, every time.