Introduction

The WundertreOS API gives you programmatic access to contacts, deals, activities, and webhooks across your growth pipeline.

The WundertreOS API is a REST API for managing your customer growth pipeline programmatically — contacts, deals, activities, and real‑time webhook events.

It powers both internal WundertreOS apps and external integrations, including the official Zapier app.

Base URL

All endpoints are served under a single base URL:

https://api.wundertreos.com/functions/v1/

Every endpoint path in this reference is appended to that base, e.g. GET /api-contacts resolves to https://api.wundertreos.com/functions/v1/api-contacts.

Who this is for

• Developers building custom integrations against WundertreOS data
• Partners embedding WundertreOS into their own platforms
• Power users automating workflows via Zapier, Make, or n8n

If you just want point‑and‑click automation, jump straight to the Zapier Integration Guide — no code required.

Conventions

• All requests and responses are JSON (Content-Type: application/json).
• Timestamps are ISO 8601 in UTC (e.g. 2026-05-17T14:23:00Z).
• IDs are UUIDs.
• Every resource is scoped to an organization (org_id). A credential is bound to exactly one org.
• List endpoints support cursor‑style pagination via limit and offset.
• Successful list responses wrap results in { "data": [...] }. Single‑object responses use { "data": { ... } }.
• Errors return { "error": "invalid_request", "message": "..." } with an appropriate HTTP status.

What's next

• Authentication — get a Bearer token or API key
• Rate limits & best practices
• Contacts API — the core resource
• Webhooks — receive events in real time