Within

Within (Within Unlimited, Inc.) is a Los Angeles virtual-reality studio founded in 2014 by Chris Milk and Aaron Koblin, both alumni of Google's Data Arts team. Andreessen Horowitz (a16z) led the company's 2016 Series A. Within builds Supernatural, a VR fitness service for Meta Quest headsets that pairs live human coaches with rhythm-mapped workouts set in 360-degree virtual locations; its earlier work spans immersive 360 video and AR (Clouds Over Sidra, Wonderscope). Meta Platforms acquired Within in February 2023 after the FTC's challenge to the deal failed, and it now operates as a Meta studio. Within is a consumer VR product company and publishes no public developer API, OpenAPI, SDK, or developer portal; its primary domain within.com is currently parked. This profile is retained as an a16z portfolio lead with no API surface to enrich.

Within is profiled on the APIs.io network. Tagged areas include Company, Virtual Reality, VR, Fitness, and Consumer.

🌐 Visit website 📡 Source on GitHub

6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyVirtual RealityVRFitnessConsumerImmersive MediaMeta

Kin Score

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

Composite quality — 6.8/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · 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 0 / 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/within: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Source (apis.yml)

aid: within
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/within.png
name: Within
description: Within (Within Unlimited, Inc.) is a Los Angeles virtual-reality studio founded in 2014 by Chris Milk and Aaron
  Koblin, both alumni of Google's Data Arts team. Andreessen Horowitz (a16z) led the company's 2016 Series A. Within builds
  Supernatural, a VR fitness service for Meta Quest headsets that pairs live human coaches with rhythm-mapped workouts set
  in 360-degree virtual locations; its earlier work spans immersive 360 video and AR (Clouds Over Sidra, Wonderscope). Meta
  Platforms acquired Within in February 2023 after the FTC's challenge to the deal failed, and it now operates as a Meta studio.
  Within is a consumer VR product company and publishes no public developer API, OpenAPI, SDK, or developer portal; its primary
  domain within.com is currently parked. This profile is retained as an a16z portfolio lead with no API surface to enrich.
url: https://raw.githubusercontent.com/api-evangelist/within/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: Meta Platforms
x-acquired-date: 2023-02
x-api-surface: none
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Virtual Reality
- VR
- Fitness
- Consumer
- Immersive Media
- Meta
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: nochange
  artifacts_added: 0
  pass: local-v1