DayOne

DayOne is a hyperscale data center company delivering next-generation digital infrastructure for cloud, AI, and edge computing workloads. Spun out of the GDS International business and backed by SoftBank Vision Fund 2, DayOne develops and operates strategically located, interconnected data center campuses across Asia-Pacific — Singapore, Johor (Malaysia), Batam (Indonesia), Hong Kong, Tokyo, and Bangkok — and is expanding into Europe with a launch market in Finland. The company positions itself as a build-to-suit and hyperscale partner focused on power availability, connectivity, and sustainable operations rather than as a public API or developer-platform provider; there is no public developer portal, API, or SDK surface at this time.

DayOne is profiled on the APIs.io network. Tagged areas include Company, Frontier Tech, Data Centers, Digital Infrastructure, and Hyperscale.

DayOne’s developer surface includes engineering blog, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

8.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Frontier Tech Data Centers Digital InfrastructureHyperscaleCloud Infrastructure AI Infrastructure Edge Computing Sustainability

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 8.5/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/dayone: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Dayone Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

About

About

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Sustainability

Sustainability

Source (apis.yml)

aid: dayone
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dayone.png
name: DayOne
description: DayOne is a hyperscale data center company delivering next-generation digital infrastructure for cloud, AI, and
  edge computing workloads. Spun out of the GDS International business and backed by SoftBank Vision Fund 2, DayOne develops
  and operates strategically located, interconnected data center campuses across Asia-Pacific — Singapore, Johor (Malaysia),
  Batam (Indonesia), Hong Kong, Tokyo, and Bangkok — and is expanding into Europe with a launch market in Finland. The company
  positions itself as a build-to-suit and hyperscale partner focused on power availability, connectivity, and sustainable
  operations rather than as a public API or developer-platform provider; there is no public developer portal, API, or SDK
  surface at this time.
url: https://raw.githubusercontent.com/api-evangelist/dayone/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- softbank-vision-fund
x-tier: identity
x-tier-reason: infrastructure-provider-no-api
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Frontier Tech
- Data Centers
- Digital Infrastructure
- Hyperscale
- Cloud Infrastructure
- AI Infrastructure
- Edge Computing
- Sustainability
apis: []
common:
- type: DomainSecurity
  url: security/dayone-domain-security.yml
- type: Website
  url: https://dayonedc.com/
- type: About
  url: https://dayonedc.com/about-us
- type: Blog
  url: https://dayonedc.com/news
- type: Support
  url: mailto:info@dayonedc.com
- type: PrivacyPolicy
  url: https://dayonedc.com/privacy-policy
- type: Sustainability
  url: https://dayonedc.com/sustainability
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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