Placenote

Placenote (Vertical AI Inc.) was a San Francisco company that built a cloud-hosted persistent augmented-reality toolkit — a "Persistent AR" SDK that let developers save, reload, and share ARKit/Unity spatial maps so digital content stays anchored to a physical location across sessions and devices. It shipped native client SDKs for iOS (Swift, via the PlacenoteSDK CocoaPod) and Unity, plus multiplayer AR samples such as PlaceInvaders and web mesh-viewing examples. The product was consumed as mobile SDKs backed by a cloud mapping/localization service rather than a public REST API, so no OpenAPI or web API surface was published. The company is now defunct: placenote.com no longer resolves to a live product (the domain is parked) and the docs/cloud service are offline. The Placenote GitHub organization and the published SDKs remain the only live, first-party developer surface, which is what this profile captures.

Placenote is profiled on the APIs.io network. Tagged areas include Company, Augmented Reality, Spatial Computing, SDK, and Mobile.

🌐 Visit website 📡 Source on GitHub

8.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.5

0 APIs

CompanyAugmented RealitySpatial ComputingSDKMobileComputer VisionARKitUnity

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.5

Composite quality — 8.7/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.7 / 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/placenote: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Resources

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Source (apis.yml)

aid: placenote
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/placenote.png
name: Placenote
description: 'Placenote (Vertical AI Inc.) was a San Francisco company that built a cloud-hosted persistent augmented-reality
  toolkit — a "Persistent AR" SDK that let developers save, reload, and share ARKit/Unity spatial maps so digital content
  stays anchored to a physical location across sessions and devices. It shipped native client SDKs for iOS (Swift, via the
  PlacenoteSDK CocoaPod) and Unity, plus multiplayer AR samples such as PlaceInvaders and web mesh-viewing examples. The product
  was consumed as mobile SDKs backed by a cloud mapping/localization service rather than a public REST API, so no OpenAPI
  or web API surface was published. The company is now defunct: placenote.com no longer resolves to a live product (the domain
  is parked) and the docs/cloud service are offline. The Placenote GitHub organization and the published SDKs remain the only
  live, first-party developer surface, which is what this profile captures.'
url: https://raw.githubusercontent.com/api-evangelist/placenote/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- version-one-ventures
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-status-note: placenote.com parked (Bluehost); cloud service offline; SDKs remain on GitHub/CocoaPods.
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Augmented Reality
- Spatial Computing
- SDK
- Mobile
- Computer Vision
- ARKit
- Unity
apis: []
common:
- type: GitHubOrganization
  url: https://github.com/Placenote
  name: Placenote GitHub Organization
- type: Packages
  url: packages/placenote-packages.yml
  name: Placenote Client SDKs (packages)
- type: SDKs
  url: packages/placenote-packages.yml
  name: Placenote iOS + Unity SDKs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1