# Leaner Technologies

> 株式会社Leaner Technologies is a Tokyo-based B2B SaaS company (founded 2019-02-22, CEO Yusuke Ohira)
> building the "Leaner" (リーナー) cloud suite for corporate procurement and purchasing departments —
> purchase-to-pay, sourcing/quotation, supplier relationship management, plus procurement BPO and
> consulting. Leaner does NOT publish a public API, developer portal, API reference, or client SDKs.

## Status

- Public API: none found (probed 2026-07-19). No developer portal, no OpenAPI, no API reference,
  no first-party SDKs on npm/PyPI/RubyGems, no `/.well-known/` discovery documents.
- Integration is delivered through partner/EC catalog connections (Amazon Business, MonotaRO)
  and implementation services rather than a self-serve API program.
- github.com/leaner-co-jp contains only forks and internal tooling — no API specs or client libraries.

## Products

- Leaner購買 (Purchasing) — purchase-to-pay: quotation, approval workflow, ordering, receiving, payment: https://leaner.jp/purchasing
- Leaner Sourcing — quotation and sourcing workspace: https://leaner.jp/sourcing
- Leaner Connect — SRM supplier-relationship platform: https://leaner.jp/connect
- Leaner Consulting — indirect-procurement transformation services: https://leaner.jp/consulting

## Company

- Corporate site: https://leaner.co.jp/
- Product site: https://leaner.jp/
- Company profile: https://leaner.co.jp/company
- Mission: https://leaner.co.jp/mission
- News: https://leaner.co.jp/news
- Engineering blog: https://developer.leaner.co.jp/
- Careers (engineering): https://careers.leaner.co.jp/engineering
- GitHub: https://github.com/leaner-co-jp
- Contact: https://leaner.co.jp/contact

## Pricing

- Purchasing pricing: https://leaner.jp/purchasing/price
- Sourcing pricing: https://leaner.jp/sourcing/price

## Policies and security

- Information security policy: https://leaner.co.jp/securitypolicy
- Privacy policy: https://leaner.co.jp/privacypolicy
- Service privacy policy (EN): https://leaner.co.jp/service-privacypolicy-en
- ISMS certification: ISO/IEC 27001:2013 / JIS Q 27001:2014, registration JP21/080659, 2021-02-08

## API Evangelist artifacts

- APIs.json: https://raw.githubusercontent.com/api-evangelist/leaner-technologies/refs/heads/main/apis.yml
- Conformance: conformance/leaner-technologies-conformance.yml
- Domain security: security/leaner-technologies-domain-security.yml
- Well-known probe results: well-known/leaner-technologies-well-known.yml