# Sumutasu

**Canonical:** https://apis.io/providers/sumutasu/  
**Website:** https://sumutasu.co.jp  
**APIs profiled:** 0

Sumutasu Inc. (株式会社すむたす) is a Japanese property-technology (proptech) company operating under the mission "a society where people can make ideal housing choices" (住まいの理想的な選択ができる社会に). It runs an instant real-estate buying and selling service for used condominiums in Japan, using data and technology to give homeowners a fast, transparent alternative to the traditional brokerage process, alongside an agent-assisted sales offering. The company is backed by 500 Global. Its public presence is a corporate marketing website (About, Services, Members, News, and Careers) built on the Studio.Design no-code platform; no public developer platform, API, SDK, or documentation surface has been found.

## Kin Score — 5.4 / 100 (minimal)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 5.4).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 2.2 |
| Commercial Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | 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).

## Security (1)

- **Sumutasu Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Real Estate, PropTech, Japan, iBuyer, Housing, Marketplace

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