What it does
A clean, versioned REST API at /api/v1. Read and write people, events and groups; read donations and sermons. Bearer-token authentication, cursor pagination, predictable JSON error envelopes. Generate as many API keys as you need, each scoped to your church and individually rate-limited.
Wire ChurchLinker into whatever your church already runs. Push new members to Mailchimp. Sync events with your church's existing calendar feed. Build a custom giving dashboard for your treasurer. Use Zapier or Make to plumb donations into Google Sheets or Slack. No developer needed for the no-code platforms.
Donations are deliberately read-only via the API. They only enter the system through Stripe Checkout so our 0% platform-fee promise and Gift Aid maths stay honest. You still get full read access plus the donation.created webhook for real-time downstream automation.
Rate limits: 600 requests per hour per key on Kingdom and on the £19/mo add-on, 5,000 per hour on Enterprise. Plenty of headroom for any normal integration.