Startnext API
The Startnext API gives you access to your project data — for embedding on your website, automating workflows, building custom integrations, or exporting supporter data.
Developer Guide
Step-by-step instructions for API keys, authentication, and code examples in JavaScript, PHP, and Python.
API Reference
Full interactive endpoint documentation — explore all available endpoints and try requests directly in the browser.
What can you do with the API?
Show your project's funding status on your own website
Embed a live funding widget directly on your website, blog, or campaign page. The widget updates automatically and always shows the current funding amount, supporter count, and progress towards your goal.
Example use case: A band running a crowdfunding campaign embeds a live funding meter on their existing website so fans can see progress without visiting Startnext.
→ See the funding widget example in the Developer Guide
Display your rewards in a custom shop or landing page
Pull your reward tiers from Startnext and display them anywhere — your website, a custom landing page, or an online shop. Availability and stock levels stay up to date automatically.
Example use case: A publisher lists their crowdfunding reward editions directly on their book website, with a " Support now" button linking back to Startnext.
→ See the incentives example in the Developer Guide
Power a live supporter stream
Show a real-time feed of new supporters during your campaign launch event, livestream, or charity gala. As people back your project, their names appear on screen immediately.
Example use case: A venue displays a live ticker of new backers on a projection screen during a fundraising event.
→ Public contributions endpoint
Export supporter and order data after your campaign
Once your project has been successfully funded, download the full list of supporters, their orders, and shipping addresses — ready for fulfillment, your CRM, or a spreadsheet.
Example use case: A project creator exports all backer addresses directly to their shipping software after the campaign ends.
Automate workflows with tools like Make or Zapier
Connect your Startnext data to no-code automation tools. Trigger workflows when a new supporter backs your project, sync supporter data with your newsletter tool, or update your CRM automatically.
Example use case: Every new backer is automatically added to a Mailchimp audience segment tagged with the reward tier they selected.
→ Create a User API Key and connect it to any HTTP integration
Who is the API for?
| Project creators | Embed live project data on your own website — no coding required for simple widgets |
| Developers | Build custom integrations, apps, or dashboards with full API access |
| Agencies | Create campaign microsites and data-driven pages for your clients |
| Teams | Access supporter and order data for fulfillment, reporting, or CRM sync |
What do you need to get started?
- A Startnext project on the Pro plan or higher
- An API Key — takes less than 2 minutes to create in your project settings
- Agreement to the Startnext API Terms of Use