# Leaner Technologies

**Canonical:** https://apis.io/providers/leaner-technologies/  
**Website:** https://leaner.co.jp/  
**APIs profiled:** 0

Leaner Technologies (株式会社Leaner Technologies) is a Tokyo-based B2B SaaS company founded on February 22, 2019 by CEO Yusuke Ohira, operating under the mission "調達のスタンダードを刷新し続ける" (continuously renew the standard of procurement). It builds the "Leaner" (リーナー) cloud suite for corporate procurement and purchasing departments: Leaner購買 (purchasing), a purchase-to-pay system covering quotation, approval workflow, ordering, receiving and payment; Leaner sourcing, a quotation and sourcing workspace; Leaner Connect, an SRM supplier-relationship platform; plus procurement BPO and consulting services. The platform aggregates supplier and EC catalogs (including Amazon Business and MonotaRO) into cross-catalog search, and applies AI to classify purchasing data for indirect-spend visibility and cost optimization. The company holds ISMS ISO/IEC 27001:2013 / JIS Q 27001:2014 certification (registration JP21/080659, February 2021). Leaner publishes no public developer portal, API reference, or client SDKs as of this enrichment pass — its integration surface is delivered through partner catalog connections rather than a self-serve API program.

## Kin Score — 13.3 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 13.3).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 0.0 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 2.4 |
| Commercial Clarity | 10.5 |
| Access Clarity | 10.5 |

## Agent readiness — 3.4 (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 | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

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

## Security (1)

- **Leaner Technologies Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Cloud, Procurement, Purchasing, Spend Management, Sourcing, Supplier Relationship Management, Enterprise Saas, Japan, Indirect Spend

---

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