FormsFort public submit API reference for access-key submissions, path submissions, request fields, response codes, JSON responses, and redirect behavior.

API Reference

Submit from static sites with one public endpoint. The public API is Web3Forms-compatible for browser form posts and JavaScript submissions, with production gates for paid/manual features.

Endpoints

Access key endpoint

Use this when your form can include a hidden public access key field.

POST https://api.formsfort.dev/submit

Path endpoint

Use this when the builder or framework cannot preserve hidden access_key fields.

POST https://api.formsfort.dev/submit/YOUR_ACCESS_KEY

Request formats

Content-Type: application/json
Content-Type: application/x-www-form-urlencoded
Content-Type: multipart/form-data
Accept: application/json
X-Requested-With: XMLHttpRequest

JavaScript requests should send Accept: application/json. Browser fetch FormData requests can still receive JSON through Fetch Metadata. Plain HTML requests may redirect after a successful submit. Form redirect defaults apply when no redirect field is supplied. GET /submit/error serves the hosted failure status page.

Reserved request fields

Name	Type	Description
`access_key`	string	Required for POST /submit. Public form key. Legacy apikey is also accepted.
`email`	string	Submitter email. Used as reply-to when the form reply-to mode allows it.
`subject`	string	Notification subject override. Blank values are ignored.
`from_name`	string	Notification sender display-name override. New forms default to Notifications.
`ccemail`	string	Paid/manual CC recipients. Comma or semicolon separated.
`replyto`	string	Explicit per-submit reply-to override.
`redirect`	URL	Per-submit success redirect for non-JavaScript form posts. Cross-domain redirects require a paid/manual entitlement.
`botcheck`	boolean/string	Hidden honeypot field. Filled values reject as spam; false-like JSON values are accepted.
`attachment`	file	Paid/manual file field for multipart forms. Other named file fields are also accepted.
`webhook`	URL	Paid/manual per-submit webhook URL for queued JSON POST delivery.
`recaptcha_response`	string	Google reCAPTCHA v3 token.
`h-captcha-response`	string	hCaptcha token.
`cf-turnstile-response`	string	Cloudflare Turnstile token.

Success response

{
  "success": true,
  "message": "Email sent successfully!",
  "requestId": "req-id",
  "deliveryId": "email-delivery-id",
  "autoresponderDeliveryId": "optional-autoresponder-id",
  "webhookDeliveryIds": ["optional-webhook-id"],
  "notificationDeliveryIds": ["optional-slack-discord-telegram-id"],
  "googleSheetsDeliveryId": "optional-google-sheets-id",
  "body": {
    "data": {
      "name": "Ada",
      "email": "[email protected]",
      "message": "Hello"
    },
    "message": "Email sent successfully!"
  }
}

Error response

{
  "success": false,
  "message": "Invalid or unverified access_key.",
  "requestId": "req-id",
  "body": {
    "data": {
      "name": "Ada",
      "email": "[email protected]"
    },
    "message": "Invalid or unverified access_key."
  }
}

Response codes

Code	Description
`200`	Accepted JSON submission. Email and integration work has been queued.
`303`	Accepted plain HTML submission redirecting to hosted success, the form redirect default, or a validated per-submit redirect URL.
`400`	Client error such as missing access key, unverified recipient, invalid redirect, spam, captcha, upload, or feature gate.
`429`	Rate limit or monthly quota rejection. Per-IP limits may include Retry-After.
`500`	Non-leaky server error with requestId for support correlation.

Server-side submissions

Browser submissions are the default trust model. Server-side submissions, including requests without Origin or Referer, require a paid/manual entitlement and an exact sender IP safelist on the form.

API Reference

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