🇯🇵Developer Tools & DevOps in Japan
9 developer tools & devops providers in Japan, publishing 10 APIs.
Developer Tools & DevOps in Japan — 9 providers on the APIs.io network sit in both cohorts, and between them they publish 10 indexed APIs.
7 of the 9 publish at least one machine-readable API; 2 publish nothing indexed at all. That split is the first thing worth reading here — a vertical can be well represented in a market and still have almost no programmable surface.
By Kin Score band: 4 minimal, 2 emerging, 1 strong, 1 developing, and 1 thin.
Leading by rating: 3-shake, Alphaus, HaneruTo, Infostellar, EmbodyMe, Sakana AI, and 3 more.
Country membership reads a tag or a stated headquarters. A provider lands in Japan when one of its own top-level tags names the country, or when its own description states a headquarters that names the country or one of its cities (roadmap#542, #719). A description that calls a company by its nationality, or names a city in a phrase that is not a headquarters statement, is not counted, so this cell is a floor, not a census.
Providers (9)
| Provider | Description | APIs | Rating |
|---|---|---|---|
| 3-shake | 3-shake, Inc. (株式会社スリーシェイク) is a Tokyo-based cloud and reliability engineering company, founded in 2015, that operates four product lines. Sreake is its SRE / platform-engineeri... | 1 | strong |
| Alphaus | Alphaus is a Tokyo-based cloud FinOps company (No. 1 in Japan) whose platform helps enterprises, managed service providers, and cloud resellers manage and optimize multi-cloud s... | 1 | developing |
| HaneruTo | HaneruTo — trading as hakuto, brand B612 SHEEP — is a Japanese one-person, AI-assisted web and systems development studio founded in 2025 that also ships b612, a Japanese-market... | 2 | thin |
| Infostellar | Infostellar is a Tokyo-based space infrastructure company that operates StellarStation, a cloud ground-station-as-a-service (GSaaS) platform. It aggregates partner and operator ... | 1 | emerging |
| EmbodyMe | EmbodyMe, Inc. is a Tokyo-based AI company building real-time neural rendering and 3D dense face-tracking technology for photorealistic digital humans. Its flagship developer pr... | 1 | emerging |
| Sakana AI | Sakana AI is a Tokyo-based AI R&D company founded by ex-Google researchers focused on collective intelligence, evolutionary optimization, and nature-inspired AI methods. The com... | 1 | minimal |
| Playco | Playco is an instant-play gaming company founded in 2020 by Justin Waldron, Michael Carter, Takeshi Otsuka and Teddy Cross, headquartered in Tokyo with teams worldwide. It build... | 0 | minimal |
| Rakuten Mobile | Rakuten Mobile is the Japanese mobile network operator (MNO) of Rakuten Group, headquartered in Setagaya, Tokyo, and Japan's fourth nationwide carrier alongside NTT Docomo, KDDI... | 3 | minimal |
| KDDI | KDDI Corporation is a Japanese multinational telecommunications operator headquartered in Tokyo, providing mobile, fixed-line, broadband, and enterprise ICT services. KDDI marke... | 0 | minimal |
Indexed API documents (29)
Two numbers, both real: these providers publish 10 APIs as their own documents, which the catalog indexes split one-per-resource into 29 documents.
Securify Scan Public API
3-shake Accounts API
3-shake Auth API
3-shake Integrations API
3-shake Projects API
3-shake Workflows API
Alphaus Admin API
Alphaus Billing API
Alphaus Cost API
Alphaus Cover API
Alphaus Flags API
Alphaus Flow API
Alphaus GuaranteedCommitments API
Alphaus Iam API
Alphaus Luster API
Alphaus Operations API
Alphaus Organization API
Alphaus Preferences API
Alphaus Pricing API
Alphaus Prism API
Alphaus Vortex API
b612 MCP Server
b612 A2A Agent
StellarStation API
DigiSelf Realtime API
Sakana Fugu API (Beta)
Rakuten CPaaS SMS / Messaging API
Rakuten CPaaS Confirm (OTP) API
Rakuten CPaaS Short URL API
Other industries in Japan
Developer Tools & DevOps elsewhere
This page is the intersection of two independently computed cohorts:
Japan and
Developer Tools & DevOps. A provider appears here only when it is
already a member of both. Japan membership is matched on tag, stated HQ,
so this is a floor rather than a census — coverage gaps show up here as small numbers, not as absent pages.
Work with this as data
Every country here is available over the APIs.io API and to AI agents over MCP. Countries is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.