NEW · Pro feature

Ask Claude, Cursor, or ChatGPT about your signups and feedback.

Lighthouse ships an MCP server your AI client connects to in one line of config. No SDK, no scripts, no CSV exports. Ask “what are people complaining about this week?” and the model searches your live signups and feedback, then answers with real data.

  • ✓ Read every waitlist, signup, and survey answer
  • ✓ Full-text search across your feedback board
  • ✓ Works with Claude Desktop, Cursor, ChatGPT, any MCP client
  • ✓ Auth uses your existing Pro API key
  • ✓ Live data on every prompt, never a stale export
MCP setup guide →
claude_desktop_config.json
{
  "mcpServers": {
    "lighthouse": {
      "url": "https://lighthouse.build/api/mcp",
      "headers": {
        "Authorization": "Bearer lh_..."
      }
    }
  }
}
The problem

Building in the dark is how indie launches die.

You build first. Three months heads‑down. You hope the launch tweet lands. You hope someone notices. Launch day comes, and the product nobody heard of stays the product nobody heard of.

So next time, you put up a waitlist. But a waitlist on its own collects emails, not customers. A thousand addresses don't tell you what to build or who would actually pay.

That's why every Lighthouse waitlist puts survey questions on the signup form. Each email arrives with answers: what they want, what they've tried, what they'd actually pay for. You launch to people you know, not strangers you collected.

Once the signups pile up, one click of AI analysis reads every answer and returns the top pain themes, audience segments, and the phrases customers actually use. No more scrolling through hundreds of free-text responses looking for a pattern.

Start validating →See the toolkit
Everything in one tool

One toolkit instead of five subscriptions.

Waitlists, surveys, newsletters, feedback, an API, and AI that reads every signup answer for you. All in one place. Stop duct-taping Mailchimp, Typeform, Canny, ChatGPT, and a spreadsheet.

WWaitlists

Build a waitlist that turns into customers.

Create a waitlist in seconds. Branded signup page that doubles as research.

  • Survey questions on the signup form
  • AI insights that read every answer and surface pain themes (Pro)
  • QR code for posters, booths, business cards
  • CSV export, custom domain (Pro)
What feature would you pay for first?
Automated weekly reports
Team collaboration tools
API and integrations
SSurveys

Surveys with real question types.

Standalone or attached to a waitlist.

  • Single choice, multiple choice, rating, free text
  • Multi-step flow, mobile-first
  • Colorful breakdowns of every answer
What is your age range?
18 – 24
25 – 34
35 – 44
45+
NNewsletter + campaigns

Email your audience without another tool.

Turn signups into subscribers and send your launch from the same place.

  • Import subscribers from a waitlist
  • Compose a campaign and send to your whole list
  • Unsubscribe handling, your sending domain (Pro)
AIAI insights (Pro)

Stop scrolling. Start shipping.

One click reads every signup answer and returns the patterns underneath.

  • Top pain themes with example quotes from real signups
  • Audience segments named and sized for you
  • Common phrases customers use, ready to paste into your copy
  • PII stripped before any data leaves the server
Top pain theme
Manual reporting eats hours per week
Named by 34 of 82 signups
Audience segments
Solo consultants (46%) · Small agencies (28%) · Freelancers (18%)
Common phrases
“save me time” ×12“too many tools” ×8“built for me” ×5
FFeedback

Listen, triage, and close the loop.

A feedback inbox for bugs, requests, and praise.

  • Stars, thumbs, or no rating
  • Triage by status, reply by email from the dashboard
  • Notify everyone who asked when you ship the feature
★★★★☆Feature

“Would love a calendar integration so I can sync my schedule.”

maya.chen@gmail.comReply
Praise

“Best onboarding I have tried in ages.”

sam.rivera@gmail.comReply
Bug

“Crashes every time I add a second tag.”

jordan.lee@gmail.comReply
{ }API access

Wire it into your own product.

A REST API to push and pull your data.

  • Signups, survey responses, feedback
  • Bearer-token auth, scoped per project
  • Generous rate limits
// POST a new signup
curl -X POST "api.lighthouse.build/v1/signups" \
  -H "Authorization: Bearer lh_..." \
  -d '{"email":"...","answers":{...}}'
MCP server

Your signups and feedback, one prompt away.

Point Claude, Cursor, or ChatGPT at Lighthouse and ask questions in plain English.

  • 7 read-only tools across waitlists and feedback, including full-text search_feedback
  • Reuses your Pro API key, no new auth to set up
  • Live data on every prompt, never a stale export
  • Setup guide →
// Claude Desktop config
{ "mcpServers": { "lighthouse": {
  "url": "https://lighthouse.build/api/mcp",
  "headers": { "Authorization": "Bearer lh_..." } }
} }
Pricing

Simple plans. No surprises.

Pick a plan, change anytime. Cancel from your dashboard with one click.

Starter
$19/ month

Everything you need to validate your idea and launch.

  • Unlimited projects
  • Unlimited waitlists & surveys
  • Unlimited newsletters
  • Unlimited feedback
  • 1,000 emails per month
  • Signup counts & analytics
Pro
$29/ month

Full data access, your domain, and API.

  • Everything in Starter
  • AI insights on every waitlist
  • MCP server
  • Individual email addresses
  • Custom domain (yourapp.com)
  • Full REST API
  • Unlimited campaign sends
  • Priority support
FAQ

Questions, answered.

Still have a question? Drop us a note. We will get back to you.

How is this different from a Mailchimp waitlist?

A normal waitlist gives you an email count. Lighthouse gives you an email count plus the survey data that tells you why people signed up, what they want most, and what they'd pay. You're validating, not just collecting.

Do I need any technical skills?

No. Starter is fully no-code. You create a waitlist, share the link or QR, and read responses in your dashboard. Pro adds API access for founders who want to wire Lighthouse into their own product.

Can I see individual emails?

On Starter you see signup counts, analytics, and can export CSV data. Pro unlocks individual email addresses in the dashboard and API, plus CSV export with full email lists.

What if I outgrow the plan?

Upgrade or downgrade from your dashboard, prorated automatically. We don't lock data behind tiers. Your historical responses stay yours on any plan.

Can I bring my own domain?

Yes, on Pro. Run your waitlist on join.yourproduct.com instead of lighthouse.build/runwell. Free SSL, two-minute DNS setup.

Does Lighthouse use AI?

Yes, on Pro. One click reads every signup answer with AI and returns the top pain themes, audience segments, and phrases customers actually use. Email addresses are stripped before the payload leaves the server, so no PII leaves the server. Rerun any time.

Does Lighthouse have an MCP server?

Yes, on Pro. Point Claude Desktop, Cursor, ChatGPT, or any MCP-aware client at lighthouse.build/api/mcp with one line of config, authenticated by your existing API key. Ask “who signed up last week and what did they say they'd pay?” and the model queries your live waitlist. Read-only: it cannot create, edit, or delete anything. Setup guide.

Stop guessing

Your next idea deserves evidence, not faith.

Build your waitlist, attach a question or two, share the link, and watch real people tell you what to build.

Start validating →
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