# Apex27 CRM API

**Canonical:** https://apis.io/apis/apex27/apex27-crm-api/  
**Provider:** Apex27 — https://apis.io/providers/apex27/  
**Base URL:** https://api.apex27.co.uk  
**Documentation:** https://apex27.co.uk/integration/n8n

Apex27 CRM API is one of 2 APIs that [Apex27](https://apis.io/providers/apex27/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Real-Estate, CRM, Property Listings, Lettings, and Tenancy. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

The Apex27 CRM API is the vendor's REST interface over the estate agency CRM, covering contacts, leads, listings and their media, rooms, keys, notes, offers, viewings, valuations, inspections, issues and onboarding checks, plus branches, users, tasks, documents, tenancies, completions, call logs, notifications, saved listing searches, search regions, global search, client portal sign-in links and webhook subscriptions. It authenticates with an `x-api-key` request header and paginates with `page` and `pageSize` (25-250). The host is live — every probed collection returned HTTP 401 Unauthorised — but there is no public reference documentation; the documentation URL declared in Apex27's own published n8n credential (https://docs.apex27.co.uk) returned HTTP 404 on 2026-07-26. Keys are issued to paying customers inside the CRM admin panel, so this is a customer-only surface, not a self-serve developer API.

## Machine-readable artifacts (7)

- **Documentation** — https://apex27.co.uk/integration/n8n
- **Integrations** — https://apex27.co.uk/integrations
- **Node** — https://www.npmjs.com/package/n8n-nodes-apex27crm
- **SignUp** — https://apex27.co.uk/estate-agent-software-sign-up
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/apex27/refs/heads/main/openapi/apex27-crm-api-openapi.yml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/apex27/refs/heads/main/overlays/apex27-crm-api-overlay.yaml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/apex27/refs/heads/main/apis.yml

## Other Apex27 APIs (1)

- [Apex27 Portal API](https://apis.io/apis/apex27/apex27-portal-api/)

## Tags

Real-Estate, CRM, Property Listings, Lettings, Tenancy, United Kingdom

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/apex27/apex27-crm-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/apex27/.