Leaner Technologies

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.

Leaner Technologies is profiled on the APIs.io network. Tagged areas include Company, Cloud, Procurement, Purchasing, and Spend Management.

Leaner Technologies’ developer surface includes engineering blog, product news, pricing, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

15.0/100 emerging ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyCloudProcurementPurchasingSpend ManagementSourcingSupplier Relationship ManagementEnterprise SaaSJapanIndirect Spend

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 15.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 0.4 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/leaner-technologies: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

Compliance

Compliance

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Commercial 2

Pricing, plans, and the legal terms of use

Pricing

Pricing

PrivacyPolicy

PrivacyPolicy

Company 5

The organization behind the API

Website

ProductWebsite

Blog

News

Careers

Source (apis.yml)

aid: leaner-technologies
name: Leaner Technologies
description: '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.'
url: https://raw.githubusercontent.com/api-evangelist/leaner-technologies/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://storage.googleapis.com/production-os-assets/assets/c11c0616-012a-49ba-82d9-ec3569159ba3
x-type: company
x-source: vc-portfolio
x-backed-by:
- bessemer-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-public-api: false
x-public-api-note: No developer portal, API reference, OpenAPI, or first-party SDK found on leaner.co.jp, leaner.jp, or github.com/leaner-co-jp
  (probed 2026-07-19).
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Cloud
- Procurement
- Purchasing
- Spend Management
- Sourcing
- Supplier Relationship Management
- Enterprise SaaS
- Japan
- Indirect Spend
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://leaner.co.jp/
- type: ProductWebsite
  url: https://leaner.jp/
- type: Blog
  url: https://developer.leaner.co.jp/
- type: News
  url: https://leaner.co.jp/news
- type: GitHubOrganization
  url: https://github.com/leaner-co-jp
- type: Pricing
  url: https://leaner.jp/purchasing/price
- type: PrivacyPolicy
  url: https://leaner.co.jp/privacypolicy
- type: SecurityPolicy
  url: https://leaner.co.jp/securitypolicy
- type: Compliance
  url: https://leaner.co.jp/securitypolicy
- type: Contact
  url: https://leaner.co.jp/contact
- type: Careers
  url: https://careers.leaner.co.jp/engineering
- type: Conformance
  url: conformance/leaner-technologies-conformance.yml
- type: WellKnown
  url: well-known/leaner-technologies-well-known.yml
- type: LLMsTxt
  url: llms/leaner-technologies-llms.txt
- type: DomainSecurity
  url: security/leaner-technologies-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence