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.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Leaner Technologies the way a machine reads it — 1 machine-readable artifact, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Leaner Technologies scores 15.0/100 (emerging), with a separate agent-readiness read of 4/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Leaner Technologies
Each block below is one kind of artifact we hold for Leaner Technologies. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Leaner Technologies — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 1
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
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