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Pro plan. Trigger URLs, hosted forms, surveys, quizzes and their QR codes are part of Pro and Agency (and the free trial). On Starter, making a new one (on Developers, on a campaign’s start box or in its Triggers tab) shows Part of Pro: Trigger URLs and forms with an Upgrade to Pro button. The ones you already have keep adding contacts and can still be edited. See Plans and billing.
Besides adding contacts yourself, a campaign can receive contacts automatically from another app or from a form. Trigger URLs and forms are created and turned off by workspace owners and admins.

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Incoming webhook (API)

Another app (Clay, Zapier, Make, n8n…) sends contacts to a URL and they enter the campaign.
Using a form tool like Typeform, Tally, Jotform, Webflow or Google Forms? Send it to a form URL instead, with no Zapier: people without a LinkedIn profile still come in, and you choose where each field goes. See Lead forms from any form tool.
1

Add the trigger URL

Open the campaign. Click + Add on the Trigger half of the start box (or in the campaign’s Triggers tab), then Incoming webhook (API).
2

Copy the link

Open the Triggers tab, click Copy link next to it and paste it in the other app as a POST webhook, with the contact’s data (at least the LinkedIn profile URL) as JSON. Contacts are matched by LinkedIn URL and never added twice.
You can also create trigger URLs in Integrations > Developers > Trigger URLs: pick the Campaign, and turn on Require a signature if the other app can sign its requests, or Check people against my ideal customer first for outside signal tools (see Signals).

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Form submission

A Kerux form: whoever fills it in enters the campaign. Add it the same way and choose Form submission, then click Open in the Triggers tab to see and share the form. The LinkedIn profile URL is always asked: it’s how Kerux knows who the person is. A Wait for webhook step can also collect answers with a Kerux form in the middle of a campaign: each contact gets their own link. A form can also ask questions with answers to pick (single or multiple choice, dropdown, rating, yes / no), show one question per page, and be a quiz whose score the campaign branches on. See Surveys and quizzes.

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QR code for a form

Print a form’s QR code on a booth banner, a flyer or a slide: people scan it with their phone, land on the form and enter the campaign when they send it.
1

Open the QR code

In the campaign’s Triggers tab, click QR code next to the form (or in Integrations > Developers > Trigger URLs, under a trigger with a live form).
2

Download it

Click Download SVG for print (it stays sharp at any size, even on a banner) or Download PNG (1024 px, fine for flyers and slides). Copy link copies the address the QR code opens.
The QR code of a form with Download PNG, Download SVG and Copy link People who send the form after scanning show Via QR code on the campaign’s contacts and on the contact’s Campaigns. The QR code is drawn in your browser; nothing is sent to an outside service. It keeps working as long as the form is on: remove the trigger and the QR code opens a “form not found” page.

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Turn one off

In the campaign’s Triggers tab, click Remove this trigger next to it. Anything still sending to it afterwards won’t come in. A campaign can have up to 5 trigger URLs and forms. See Campaign triggers.