Kleap — website infrastructure for AI agents

Your agent builds. Kleap ships it live. Let any AI agent — Claude, ChatGPT, Cursor, or a bash-tool agent like Claude Code — build, edit and publish real, live websites for you. Hosting, database, auth and domains included.

An alternative to Lovable / v0 / Bolt — except it's driven by your agent, and every publish comes with the verified-live guarantee: a site is only ever reported online once it is provably serving — never a hallucinated dead link.

This package is both a CLI (kleap create "…", kleap publish 42, …) and an MCP server (kleap mcp / no args) — same account, same ~/.kleap/config.json auth, same underlying /api/v1 REST API. Pick whichever fits your agent: a shell/bash-tool agent (Claude Code, a cron script, CI) wants the CLI — one compact line per call, no JSON-RPC framing. An MCP-native client (Claude Desktop, Cursor, ChatGPT connectors) wants the MCP server, which this package also is, unchanged.

Above: a real run — your agent writes the code with write_files, publish_app builds & deploys it, and the page is live in seconds. Or just ask Kleap's AI in plain English.

No secrets live in this package — it reads your own KLEAP_API_KEY (or the token saved by kleap auth login) and talks only to kleap.co.

CLI (for agent shells — Claude Code, Codex, scripts)

If your agent drives a bash tool rather than MCP, use the CLI directly. Output is 1-3 lines by default (token-efficient — built for an agent reading its own tool output, not a human terminal), clean exit codes (0/1), and a --json flag whenever you want the full structured response.

npx -y kleap-cli auth login              # opens your browser once, no key to paste
# — or, for CI / non-interactive: npx -y kleap-cli auth key kleap_live_sk_...

npx -y kleap-cli create "a one-page site for my bakery, warm palette"
# ✓ created app 4821 — https://warm-bakery-fold.kleap.io

npx -y kleap-cli edit 4821 "change the headline to 'Roasted slow'"
# ✓ edited app 4821 — https://warm-bakery-fold.kleap.io

npx -y kleap-cli publish 4821
# ✓ published https://warm-bakery-fold.kleap.io

npx -y kleap-cli status warm-bakery-fold.kleap.io   # by id, slug, kleap.io URL, or connected custom domain
# ✓ Bakery (4821) — live: https://warm-bakery-fold.kleap.io

Commands

<app> accepts a numeric app id, a slug.kleap.io URL, a bare slug, or a connected custom domain — resolved server-side in one call (GET /apps/resolve), same as the MCP find_app tool.

Example: a Claude Code / bash-tool agent

# One-shot: build it, publish it, hand back a URL a human can click.
url=$(npx -y kleap-cli create "a landing page for my podcast" --json | node -e \
  'let d="";process.stdin.on("data",c=>d+=c).on("end",()=>console.log(JSON.parse(d).url))')
echo "Live: $url"

# Non-blocking flow (agent does other work while it builds):
npx -y kleap-cli create "a landing page for my podcast" --no-wait --json   # → { task_id, app_id, ... }
# ... later ...
npx -y kleap-cli status 4821

Exit codes are always clean: 0 on success, 1 on any failure, with a single ✗ <reason> line on stderr (or {"error":{"message":...}} with --json) — safe to check with $? / try/except subprocess.run(..., check=True) without scraping prose.

Install once (optional — npx -y above needs no install)

npm i -g kleap-cli
kleap auth login
kleap create "a one-page site for my bakery"

MCP server (for MCP-native clients — Claude Desktop, Cursor, ChatGPT)

Same package, same account, same ~/.kleap/config.json auth — just a different transport for clients that speak MCP instead of a bash tool.

Easiest — connect with OAuth, no key

Add the hosted connector and sign in. Nothing to generate, nothing to paste — you authorize Kleap in your browser like any other app. Works in Claude Desktop, ChatGPT and Cursor.

https://kleap.co/api/mcp

• Claude Desktop — Settings → Connectors → Add custom connector → paste the URL → Connect → sign in to Kleap.

• ChatGPT — Settings → Connectors → add the URL → authorize with OAuth.

• Cursor — Settings → MCP → Add server → paste the URL → authorize.

That's it — same 17 tools, no API key. Skip straight to step 3.

Or — local CLI, sign in with your browser (no key)

Prefer a local stdio process? Sign in once — no key to generate or paste:

npx kleap-cli auth login

This opens your browser, you authorize Kleap, and the token is saved to ~/.kleap/config.json. After that, npx -y kleap-cli just works. (kleap auth logout / kleap auth status are there too.) Then add a keyless stdio entry to your client, e.g. Claude Desktop claude_desktop_config.json:

{ "mcpServers": { "kleap": { "command": "npx", "args": ["-y", "kleap"] } } }

Or — local CLI with an API key

Prefer a key (e.g. for CI or scripting the REST API directly)?

1. Get an API key — at kleap.co → Settings → API key → MCP / API access → Generate MCP key (kleap_live_sk_...).

2. Add Kleap to your AI client:

{
  "mcpServers": {
    "kleap": {
      "command": "npx",
      "args": ["-y", "kleap"],
      "env": { "KLEAP_API_KEY": "kleap_live_sk_..." }
    }
  }
}

{
  "mcpServers": {
    "kleap": {
      "command": "npx",
      "args": ["-y", "kleap"],
      "env": { "KLEAP_API_KEY": "kleap_live_sk_..." }
    }
  }
}

claude mcp add kleap -e KLEAP_API_KEY=kleap_live_sk_... -- npx -y kleap-cli

{
  "mcpServers": {
    "kleap": {
      "command": "npx",
      "args": ["-y", "kleap"],
      "env": { "KLEAP_API_KEY": "kleap_live_sk_..." }
    }
  }
}

{
  "mcpServers": {
    "kleap": {
      "command": "npx",
      "args": ["-y", "kleap"],
      "env": { "KLEAP_API_KEY": "kleap_live_sk_..." }
    }
  }
}

Add the hosted connector at https://kleap.co/api/mcp and authorize with OAuth (or paste your kleap_live_sk_ key). Same tools, no install.

Every stdio config is identical — npx -y kleap-cli + a KLEAP_API_KEY env var — so any MCP client works.

Least-privilege keys: when you generate a key, pick a scope — Read-only (inspect sites, no changes), Build, or Full. Buying domains is never included by default. Give a read-only agent a read-only key.

3. Restart the client and just ask:

"Build me a one-page site for my bakery, publish it, and give me the live URL." "Add a contact form to my site and redeploy." "Change the headline to 'Roasted slow' and publish."

Works with any MCP-compatible agent: Claude · ChatGPT · Cursor · Claude Code · Codex.

Tools

Find & build — find_app · create_app · modify_app · read_files · write_files · rename_app · check_task · retry_task Publish & domains — publish_app · get_publish_status · search_domains · check_domain · connect_domain Account — list_apps · get_app · list_app_files · get_credits

App arguments are snake_case: app_id, task_id, prompt, message, visibility.

Recipes

Two ways to put code on a site — pick per task:

• write_files (deterministic): your model writes the exact file contents; you push them and Kleap builds + deploys as-is. No Kleap-AI step → no Kleap credits, never stalls. Then publish_app. Unlike Lovable/v0/Bolt, your agent can write the code itself.

• modify_app (Kleap's AI): describe the outcome in plain English and Kleap's AI writes it. Like Lovable's message-passing — kept for when you'd rather it figure out the change.

Either way Kleap hosts it (build, deploy, SSL, DB, auth, domains, verified-live).

• Edit existing files SAFELY (don't rewrite blind) — list_app_files(app_id) → read_files(app_id, ["src/components/Header.astro"]) → edit only what must change with your own model → write_files(app_id, [{ path, content }]) → publish_app(app_id). This read→edit→write loop is the reliable way to fix headers/footers, wrong phone numbers, broken links or dead forms without breaking the rest of the site.

• Edit a site named by its address — find_app("mysite.ch") → read_files(...) → write_files(...) → publish_app(...), or modify_app(app_id, "…") → check_task(task_id, wait=45).

• Many pages (programmatic SEO) — BEST: generate a dynamic route + a data file with your own model and push them in one write_files, then publish_app:

  write_files(app_id, [{ path: "src/pages/[service]/[city].astro", content: … }, { path: "src/data/locations.json", content: … }]) → publish_app(app_id) Deterministic, scales to thousands, no stall, no credits. (Or ask Kleap's AI to do the same in one modify_app — never loop one call per page.)

• Don't babysit a 5-15 min build — check_task long-polls (default wait=45), or pass a webhook_url to create_app / modify_app for a fully hands-off flow.

• A build failed — TASK_TIMEOUT/STALE_TASK = transient, call retry_task; it returns a new task_id — poll that one. TASK_FAILED = read the message, retry once.

The verified-live guarantee

Most tools tell the agent "it's online" the moment a deploy is requested. Kleap reports a site as published only once the new version is provably serving at its live URL — otherwise it rolls back and reports "not confirmed live." Your agent can never hand a user a dead link.

If check_task reports failed (a transient generation stall), call retry_task with that task_id to resume from where it stopped — it returns a new task_id to poll, and partial work is kept. Or skip the AI entirely and write_files the exact code yourself, then publish_app.

FAQ

Do I need an API key? No. The easiest path is the OAuth connector (https://kleap.co/api/mcp) — you sign in with your browser and never copy a key. An API key is only needed for the local CLI / direct REST use.

Is it safe? Yes. Whether you connect with OAuth or an API key, an agent can only ever touch your own Kleap apps. OAuth tokens and kleap_live_sk_ keys are scoped, sent only over HTTPS, and revocable anytime in Settings → API key. Credentials from kleap auth login / kleap auth key are stored in ~/.kleap/config.json (permissions 0600); kleap auth logout deletes that file. A stored OAuth login is bound to the origin that issued it — if KLEAP_API_URL points anywhere else, the CLI refuses to send the token (CREDENTIAL_ORIGIN_MISMATCH) so a malicious/typo'd endpoint can't capture it. For custom endpoints (e.g. staging), use KLEAP_API_KEY or kleap auth key — an explicit secret you provide is sent where you point it. Details in SECURITY.md.

How much does it cost? Connecting is free. Builds and edits use Kleap credits (get_credits reports your balance) — see pricing.

Which agents work? Any MCP client: Claude Desktop, Claude Code, Cursor, ChatGPT (hosted connector), and others.

Requirements & run

Node ≥ 18. Run it directly:

KLEAP_API_KEY=kleap_live_sk_... npx -y kleap-cli
# → [kleap-mcp] ready (stdio) → https://kleap.co. Tools: list_apps, ...

Override the API base with KLEAP_API_URL (default https://kleap.co). Missing key → the server exits with a clear message. Note: a stored OAuth login only works against the origin it was issued by — with a custom KLEAP_API_URL, authenticate via KLEAP_API_KEY or kleap auth key instead (see SECURITY.md).

Links

• Kleap: https://kleap.co · MCP & CLI page: https://kleap.co/mcp

• Issues & security: https://github.com/kleaphq/cli/issues

Maintained by the Kleap team. MIT © Kleap.