Assembly OSM website screenshot

Assembly OSM

Assembly OSM is a New York City off-site manufacturing company founded in 2019 by SHoP Architects co-founders Bill and Chris Sharples to industrialise the construction of high-rise urban housing. The company calls its method "post-modular": rather than trucking finished volumetric boxes from a single factory, Assembly designs a kit-of-parts chassis and distributes fabrication across a network of specialist suppliers — an aerospace and automotive supply-chain model applied to buildings — then stacks the resulting units on site, claiming delivery of market-competitive high-rise residential architecture in roughly 60% of conventional schedule. Its buildings are all-electric and passive-design led, targeting 55-70% energy-efficiency improvement and 35% less embodied carbon today, net-zero operational carbon by 2027 and climate-positive buildings by 2040. Completed and in-progress work includes Prototype Alpha, 147 St. Felix Street and 247 East 117th Street in New York, plus an AOSM Canada operation. The company has raised more than $60 million, including a $38 million Series A in 2022, and draws engineering staff from SpaceX, Tesla and Boeing. Assembly runs a digital-twin engineering platform — a heavily scripted CATIA environment carrying each module from design through fabrication to installation — but that platform is an internal manufacturing tool, not a product: Assembly OSM sells buildings, and publishes no developer program, no public API, no SDK and no machine-readable API contract of any kind.

Assembly OSM is profiled on the APIs.io network. Tagged areas include Company, Construction, Modular Construction, Off-Site Manufacturing, and Prefabrication.

8.1/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
0 APIs
CompanyConstructionModular ConstructionOff-Site ManufacturingPrefabricationReal EstateHousingArchitectureDigital TwinSustainabilityClimate TechManufacturingNew York

Kin Score

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

Assembly Osm Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 1

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 1

Pricing, plans, and the legal terms of use

Company 5

The organization behind the API

Other 6

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: assembly-osm
name: Assembly OSM
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:
  - security
  generated: '2026-09-02'
  method: derived
image: https://cdn.prod.website-files.com/67642e56febbc72785406810/67642e56febbc727854068a1_LOGO_Web256x256.png
description: 'Assembly OSM is a New York City off-site manufacturing company founded in 2019 by SHoP Architects co-founders
  Bill and Chris Sharples to industrialise the construction of high-rise urban housing. The company calls its method "post-modular":
  rather than trucking finished volumetric boxes from a single factory, Assembly designs a kit-of-parts chassis and distributes
  fabrication across a network of specialist suppliers — an aerospace and automotive supply-chain model applied to buildings
  — then stacks the resulting units on site, claiming delivery of market-competitive high-rise residential architecture in
  roughly 60% of conventional schedule. Its buildings are all-electric and passive-design led, targeting 55-70% energy-efficiency
  improvement and 35% less embodied carbon today, net-zero operational carbon by 2027 and climate-positive buildings by 2040.
  Completed and in-progress work includes Prototype Alpha, 147 St. Felix Street and 247 East 117th Street in New York, plus
  an AOSM Canada operation. The company has raised more than $60 million, including a $38 million Series A in 2022, and draws
  engineering staff from SpaceX, Tesla and Boeing. Assembly runs a digital-twin engineering platform — a heavily scripted
  CATIA environment carrying each module from design through fabrication to installation — but that platform is an internal
  manufacturing tool, not a product: Assembly OSM sells buildings, and publishes no developer program, no public API, no SDK
  and no machine-readable API contract of any kind.'
url: https://raw.githubusercontent.com/api-evangelist/assembly-osm/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profile
x-tier-reason: no-api-surface
specificationVersion: '0.23'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Construction
- Modular Construction
- Off-Site Manufacturing
- Prefabrication
- Real Estate
- Housing
- Architecture
- Digital Twin
- Sustainability
- Climate Tech
- Manufacturing
- New York
tags_raw:
- Company
- Construction
- Modular Construction
- Off-Site Manufacturing
- Prefabrication
- Real Estate
- Housing
- Architecture
- Digital Twin
- Sustainability
- Climate Tech
- Manufacturing
- New York
- Real-Estate
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/assembly-osm-domain-security.yml
- type: Website
  url: https://www.assemblyosm.com/
- type: Technology
  url: https://www.assemblyosm.com/technology
- type: Sustainability
  url: https://www.assemblyosm.com/sustainability
- type: Projects
  url: https://www.assemblyosm.com/buildings
- type: Contact
  url: https://www.assemblyosm.com/build-with-us-page
- type: Careers
  url: https://careers.assemblyosm.com/
- type: Team
  url: https://careers.assemblyosm.com/people
- type: StatusPage
  url: https://status.assemblyosm.com/
  description: Public Better Stack status page for assemblyosm.com. It monitors the corporate website only; no API or application
    service is listed.
- type: GitHubOrganization
  url: https://github.com/assemblyosm
  description: Organization exists (created 2019-11-12, contact dev@assemblyosm.com) but publishes zero public repositories
    and zero gists.
- type: PrivacyPolicy
  url: https://careers.assemblyosm.com/data-privacy
  description: Assembly OSM privacy notice published on the careers site; scoped to candidate personal data. No privacy policy
    is published on the corporate site.
- type: CookiePolicy
  url: https://careers.assemblyosm.com/cookie-policy
- type: LinkedIn
  url: https://www.linkedin.com/company/assemblyosm/
- type: Twitter
  url: https://x.com/assemblyosm
- type: Instagram
  url: https://www.instagram.com/assemblyosm/
- type: SecondaryMarket
  url: https://www.hiive.com/securities/assembly-osm-stock
- type: Lifecycle
  url: lifecycle/assembly-osm-lifecycle.yml
- type: LLMsTxt
  url: llms/assembly-osm-llms.txt
x-enrichment:
  date: '2026-08-06'
  status: minimal
  artifacts_added: 4
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Assembly OSM manufactures and stacks high-rise apartment buildings — its digital twin is a scripted CATIA environment
    used internally to drive its own fabrication line, not a product with an interface — so assemblyosm.com is an eleven-page
    Webflow marketing site where every spec path 404s, every /.well-known/* path returns "Invalid .well-known request", and
    the api./docs./developer./mcp. hosts that appear to resolve are a wildcard DNS record answering with the same Cloudflare
    403 as a nonsense control subdomain.
  evidence:
  - url: https://www.assemblyosm.com/openapi.json
    status: 404
  - url: https://www.assemblyosm.com/llms.txt
    status: 404
  - url: https://www.assemblyosm.com/.well-known/agent-card.json
    status: 404
  - url: https://www.assemblyosm.com/.well-known/security.txt
    status: 404
  - url: https://api.assemblyosm.com/
    status: 403
  - url: https://zzz-nonsense-control.assemblyosm.com/
    status: 403
  - url: https://api.github.com/orgs/assemblyosm/repos
    status: 200
  - url: https://status.assemblyosm.com/
    status: 200
  checked: '2026-08-06'

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