Using Form Endpoint URLs

When to use a form endpoint

A Form Endpoint is a generated URL for traditional HTML forms. Set your form's action attribute to the endpoint URL and submit with POST; LeadToSheet records the fields and runs the normal lead pipeline.

• Use it for static sites, simple landing pages, and environments where you prefer server-style form posts.
• It does not require the JavaScript SDK to intercept the form.
• It is separate from REST API keys, which are for server-side or backend-created leads.

Set it up

1. 1

   Open Sources

   Open the site in LeadToSheet, choose Sources, then click Form Endpoint.

2. 2

   Create or copy the endpoint

   Copy the generated endpoint URL for that site.

3. 3

   Update your form

   Set the form action to the LeadToSheet URL and submit with method="POST".

4. 4

   Test the form

   Submit a test lead and confirm it appears in LeadToSheet before sending real traffic to the page.

Pick a response mode

Form Endpoints support three response modes, each suited to a different setup. Switch between them on the endpoint's settings card.

• Thanks page (default) — the visitor lands on a LeadToSheet-hosted thanks page at /f/<endpoint-id>/thanks after submission. Good for static sites with no backend.
• Redirect — the visitor is 302-redirected to a URL you configure. Use this when you have your own thank-you page or want to pass tracking params to an analytics tool.
• JSON — the endpoint returns { ok: true, id: <submissionId> } as JSON with permissive CORS (Access-Control-Allow-Origin: *). Use this when submitting via fetch() / XHR from a JavaScript handler that wants to render its own confirmation UI.