Forms

What it does

• ✓12 field types — text, email, number, select, multiselect, checkbox, textarea, url, tel, date, file, hidden
• ✓Compound tools — use sutrena_collect to create a form with notifications in one call
• ✓Every form gets a public hosted URL at /f/:id — works immediately
• ✓Embed on any site with two lines of HTML (auto-resizing iframe)
• ✓File uploads with presigned URLs and per-plan size limits
• ✓Field validation, required fields, regex patterns, min/max values
• ✓Conditional field visibility — show/hide fields based on another field's value (showIf)
• ✓Webhook notifications on submission with HMAC signing
• ✓Auto-entry pipeline — form submissions auto-create page entries for live walls
• ✓Duplicate prevention via uniqueBy (e.g. one submission per email)
• ✓Custom success message, submit button text, redirect URL
• ✓Max submission limits and form close dates
• ✓Spam filtering built in

How it works

curl -X POST https://sutrena.com/api/forms \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Beta Signup",
    "fields": [
      {"name": "email", "label": "Email", "type": "email", "required": true},
      {"name": "role", "label": "Role", "type": "select",
       "options": ["Developer", "Designer", "PM", "Other"]},
      {"name": "why", "label": "Why are you interested?", "type": "textarea"}
    ],
    "successMessage": "You are on the list."
  }'

# Returns: submitUrl, hostedFormUrl

One POST. You get a form and a submit endpoint. Style it yourself or use the hosted version.

What it does not do

No visual editor. No drag-and-drop. showIf handles simple conditional visibility (show field B when field A equals X), but there is no multi-branch wizard flow or complex dependency chains. If you need a 40-field form with deeply nested branching paths and payment integration, this is not the tool. If you need a form that works, collects data, and shows the right fields at the right time, it is.

FAQ

Related

What is Sutrena?

Sutrena is the web runtime for AI agents. Forms, Pages, Analytics, Webhooks, Automations — all through 67 MCP tools and one REST API. Your agent creates web artifacts, humans interact with them, and your agent gets the data back. Use any one feature or all of them together.

Get started in two API calls

curl -X POST https://sutrena.com/api/trial

# Create a form
curl -X POST https://sutrena.com/api/forms \
  -H "Authorization: Bearer st_trial_xxx" \
  -H "Content-Type: application/json" \
  -d '{"name": "waitlist", "fields": [{"name": "email", "label": "Email", "type": "email", "required": true}]}'

# Or deploy a page
curl -X POST https://sutrena.com/api/pages \
  -H "Authorization: Bearer st_trial_xxx" \
  -H "Content-Type: application/json" \
  -d '{"slug": "index", "title": "My Site", "html": "<h1>Live</h1>"}'

Ready to build?

Get a trial API key instantly with no signup, or create an account for the full experience.