# Apex27

**Canonical:** https://apis.io/providers/apex27/  
**Website:** https://apex27.co.uk/  
**APIs profiled:** 2

Apex27 Limited is a United Kingdom estate agency CRM vendor, founded in 2019 and headquartered in the UK, selling cloud software to sales, lettings and commercial agents for £35 per user per month. It sits in the middle of the UK residential value chain — between the agent and the portals — capturing leads, applicants, listings, viewings, valuations, offers, sales progression and tenancies, then syndicating listings out to Rightmove, Zoopla, OnTheMarket and others. Because the UK has no MLS and no cooperative listing database, that CRM seat is the only practical route a listing takes to market, and Apex27 is one of the private gatekeepers of it. Apex27 does operate two real HTTP APIs — the Apex27 CRM API at api.apex27.co.uk and a per-tenant Portal API that powers agency websites — but neither has a public developer portal. The documentation URL that Apex27's own published n8n node points at, docs.apex27.co.uk, returns 404, and every CRM endpoint returns 401 Unauthorised without a key issued inside a paid tenant. Access is customer-only, not self-serve. RESO does not apply — no RESO Web API or Data Dictionary certification exists for Apex27 or for the UK market at all, since RESO is a NAR/MLS construct with no UK counterpart. Apex27 publishes no open data; the UK's open property layer belongs to HM Land Registry and Ordnance Survey, not to the CRM vendors.

## Kin Score — 43.6 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 43.6).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 69.6 |
| Governance | 20.5 |
| Contract Governance | 20.5 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 20.8 |
| Commercial Clarity | 44.7 |
| Access Clarity | 44.7 |

## Agent readiness — 31.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | derived |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (2)

- **Apex27 CRM API** — 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, valuation...
- **Apex27 Portal API** — The Apex27 Portal API is the per-tenant, website-facing API that drives search and enquiry on Apex27-built agency websites. Its documented operations are get-listings, get-listi...

## MCP servers (1)

- **Apex27 MCP Server**

## Agentic access (1)

- **Apex27 Agentic Access** — 129 operations · 70 acting

## Security (2)

- **Apex27 Authentication** — apiKey · 2 schemes
- **Apex27 Domain Security** — TLSv1.2 · HSTS · DMARC

## Tags

Real-Estate, United Kingdom, PropTech, Property Listings, CRM, Estate Agency, Lettings, Rentals, Property Management, Valuation, Tenancy, Conveyancing

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/apex27/). Scores are computed from the provider's own public artifacts under a published rubric.