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iter0

Official registry Other

Build and edit launch-ready websites for tech founders from a brief or an authorised reference.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http iter0 'https://iter0.com/api/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "iter0": {
            "type": "http",
            "url": "https://iter0.com/api/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. iter0 MCP
  2. Connect
  3. Sign in
  4. Tools
  5. Credits
  6. Agent skill
  7. Official MCP Registry
  8. Limits
  9. Licence

iter0 MCP

Connect an AI agent such as Claude Code, Cursor or Codex to iter0, an AI website builder for tech founders. Through MCP, the agent can:

  • build a launch website from a brief or from a reference site you are allowed to use;
  • make one focused edit to a saved page;
  • read your saved designs and their status;
  • check a site for problems before you share it;
  • publish a site to a free name.iter0.app address, and take it offline again;
  • read and reply to comments left on an iter0 canvas.

Paid steps show a price quote first. Nothing is spent until you confirm the quote.

This repository holds connection instructions, a registry file and an agent skill. The server runs at iter0.com, and its source code is not published here.

Connect

Claude Code:

claude mcp add --transport http iter0 https://iter0.com/api/mcp

Cursor (.cursor/mcp.json):

{
  "mcpServers": {
    "iter0": {
      "url": "https://iter0.com/api/mcp"
    }
  }
}

Codex (~/.codex/config.toml):

[mcp_servers.iter0]
url = "https://iter0.com/api/mcp"

If your client needs a different format, use its own steps for adding a Streamable HTTP server, and give it the endpoint above.

Sign in

Two tools work without signing in: iter0_health and iter0_get_developer_docs.

The other tools use your iter0 account through OAuth 2, with the scopes sites:read, sites:build and sites:edit. Your client opens a sign-in page the first time it needs one. The server publishes its protected-resource metadata at https://iter0.com/.well-known/oauth-protected-resource.

For direct API calls (not MCP), create a bearer token in your account settings: https://iter0.com/settings/api-keys. The API reference is at https://iter0.com/developers.

Tools

22 tools are live on the endpoint. Costs are from the tool descriptions.

No sign-in
ToolWhat it does
iter0_healthChecks that the API and developer contracts respond. Does not build or edit.
iter0_get_developer_docsReturns the links for API docs, OpenAPI, MCP setup, authentication and support.
Building (paid steps quote first)
ToolWhat it doesCost
iter0_create_siteStarts a website build from a brief, an authorised reference URL or a direction from a Show 3 set. Returns a quote first.1 credit
iter0_edit_siteMakes one focused change to a saved page, or returns revised HTML for a page pasted into chat. Returns a quote first.0.5 credit
iter0_show_threePrepares three rough design directions from approved references.1 credit on a paid account; free accounts use their allowance
iter0_confirm_paid_actionStarts a quoted request once the person has confirmed its price.The quoted amount
iter0_get_site_statusChecks a build's progress. Returns HTML only when asked.Free
iter0_get_design_set_statusReads a Show 3 batch: status and the three directions.Free
Designs
ToolWhat it does
iter0_list_my_designsLists saved designs, newest first, with search and paging.
iter0_get_designReads one design: its name, link, section IDs and a short summary. Does not return the page code.
iter0_open_builderOpens your iter0 projects. Starts nothing and spends nothing.
iter0_design_layoutUsed by the iter0 card to outline a section. Not for direct use.
Publishing and checks (free)
ToolWhat it does
iter0_check_siteLists problems before sharing: missing title or description, images without alt text, broken internal links, placeholder text, forms that would go nowhere. Changes nothing.
iter0_publish_sitePuts a saved site live at name.iter0.app. Two steps: the first returns the address and a confirmation token, the second publishes.
iter0_publish_statusChecks whether a site is live.
iter0_unpublish_siteTakes a live site offline. The design and the address are kept. Two steps.
iter0_undo_editUndoes the last saved edit, while it is still the current page.
iter0_restore_versionRestores an earlier saved version. Two steps.
Canvas feedback (free)
ToolWhat it does
iter0_push_sitePuts finished HTML pages on your iter0 canvas so you can comment on them. Publishes nothing.
iter0_get_canvas_feedbackReads the comments and notes you left on the canvas.
iter0_read_canvas_pageReads one canvas page's HTML and version before a revision.
iter0_reply_to_feedbackAdds a reply to a comment thread. Never resolves or approves anything.

Credits

  • A build costs 1 credit. An AI edit costs 0.5 credit. Publishing, checks, canvas tools, undo and restore are free.
  • Every paid step returns an exact quote first, and a quote expires after 15 minutes. Nothing is spent until you confirm the quote, in the iter0 card or by saying yes in chat.
  • The free plan includes 3 credits a month. Current plans are at https://iter0.com/pricing.

Agent skill

skills/iter0-website-builder/SKILL.md tells a coding agent which tools to use, in what order, and when to stop and ask you.

Official MCP Registry

server.json describes the remote server for the official MCP Registry, under the name io.github.inchwormz/iter0-mcp.

Limits

  • Use real customer facts and references you are allowed to use.
  • A build that has started is not a finished site. Check the result of each run.
  • Generated pages do not guarantee rankings, traffic or conversion.

Licence

The files in this repository are under the MIT licence. iter0 itself is a hosted service governed by its terms and privacy policy.

Frequently asked questions

What is iter0?

Build and edit launch-ready websites for tech founders from a brief or an authorised reference.

How do I install iter0?

It runs as a remote server. In Claude Code: claude mcp add --transport http iter0 'https://iter0.com/api/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does iter0 need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is iter0 open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains iter0?

It is published by inchwormz. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.