# 42 Floors

**Canonical:** https://apis.io/providers/42-floors/  
**Website:** https://42floors.com  
**APIs profiled:** 0

42Floors was a Y Combinator- and 500 Global-backed commercial real estate search platform founded in 2011 by Jason Freedman to make it easy to discover and lease office, coworking, retail, industrial, and warehouse space across top U.S. markets. It aggregated a large listings database (the "42Floors MLS") that brokers and tenants searched online. The company was acquired by Knotel in 2018, and the 42floors.com domain and listings service were later taken over by Yardi, which folded them into CommercialCafe — 42floors.com now redirects there. The only surviving developer surface is the first-party `mls` RubyGem, a client for the (now-decommissioned) 42Floors MLS API at mls.42floors.com.

## Kin Score — 6.8 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 6.8).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

Company, Commercial Real Estate, PropTech, Real Estate Listings, Office Space, MLS, Acquired

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/42-floors/). Scores are computed from the provider's own public artifacts under a published rubric.