Fusion I/O

Fusion-io (branded Fusion I/O) was an enterprise storage company founded in 2005 and based in the Salt Lake City area of Utah, best known for its ioMemory and ioDrive PCIe flash acceleration cards that placed NAND flash directly on the server bus to speed databases and data-center workloads. Steve Wozniak served as chief scientist; the company listed on the NYSE in 2011 and was acquired by SanDisk in 2014, later becoming part of Western Digital. It exposes no public API, developer portal, or documentation surface today; fusionio.com no longer resolves to a live site. Retained in the network as a defunct a16z portfolio company for record.

Fusion I/O is profiled on the APIs.io network. Tagged areas include Company, Storage, Flash Memory, Enterprise Storage, and Data Center.

📡 Source on GitHub

0.0/100 minimal Agent 0/100 human only Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

0 APIs

Company Storage Flash Memory Enterprise Storage Data Center Hardware Semiconductors Defunct

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 0.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 0.0 / 9

Regulatory Posture 0.0 / 15

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

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/fusion-i-o: 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 →

Resources

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: fusion-i-o
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/fusion-i-o.png
name: Fusion I/O
description: Fusion-io (branded Fusion I/O) was an enterprise storage company founded in 2005 and based in the Salt Lake City
  area of Utah, best known for its ioMemory and ioDrive PCIe flash acceleration cards that placed NAND flash directly on the
  server bus to speed databases and data-center workloads. Steve Wozniak served as chief scientist; the company listed on
  the NYSE in 2011 and was acquired by SanDisk in 2014, later becoming part of Western Digital. It exposes no public API,
  developer portal, or documentation surface today; fusionio.com no longer resolves to a live site. Retained in the network
  as a defunct a16z portfolio company for record.
url: https://raw.githubusercontent.com/api-evangelist/fusion-i-o/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-09-16'
x-status: defunct
x-status-reason: acquired-by-sandisk-2014-no-live-surface
tags:
- Company
- Storage
- Flash Memory
- Enterprise Storage
- Data Center
- Hardware
- Semiconductors
- Defunct
tags_raw:
- Company
- Storage
- Flash Memory
- Enterprise Storage
- Data Center
- Hardware
- Semiconductors
- Defunct
- Data-Center
apis: []
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
common:
- type: ParentCompany
  url: https://apis.io/providers/sandisk/
  name: SanDisk
  x-relationship: acquired
  x-evidence: Steve Wozniak served as chief scientist; the company listed on the NYSE in 2011 and was acquired by SanDisk
    in 2014, later becoming part of Western Digital.
x-acquired-by: sandisk
x-acquired-year: 2014

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