Brewster

Brewster was a New York-based mobile contacts startup founded by Steve Greenwood that launched an iOS app in July 2012 offering a "hyperconnected mobile address book" — it merged phone contacts with Google Apps, Facebook, Twitter, Foursquare and LinkedIn profiles, deduplicated them, and kept them self-updating in the cloud while surfacing relationship signals about who a user actually engaged with. The company was backed by Union Square Ventures and Slow Ventures. In October 2015 the founding team was acqui-hired by Restaurant Brands International (owner of Burger King and Tim Hortons) without the app or its data, and in March 2016 FullContact acquired Brewster's self-updating address book technology and shut the consumer product down within 30 days. Brewster never published a public developer API, SDK, OpenAPI definition or developer portal, and no API surface survives today. This profile is retained as a historical record only.

Brewster is profiled on the APIs.io network. Tagged areas include Company, Defunct, Contacts, Address Book, and Mobile.

🌐 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

CompanyDefunctContactsAddress BookMobileSocialConsumerAcquired

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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

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Resources

Company 5

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Source (apis.yml)

aid: brewster
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/brewster.png
name: Brewster
description: Brewster was a New York-based mobile contacts startup founded by Steve Greenwood that launched an iOS app in
  July 2012 offering a "hyperconnected mobile address book" — it merged phone contacts with Google Apps, Facebook, Twitter,
  Foursquare and LinkedIn profiles, deduplicated them, and kept them self-updating in the cloud while surfacing relationship
  signals about who a user actually engaged with. The company was backed by Union Square Ventures and Slow Ventures. In October
  2015 the founding team was acqui-hired by Restaurant Brands International (owner of Burger King and Tim Hortons) without
  the app or its data, and in March 2016 FullContact acquired Brewster's self-updating address book technology and shut the
  consumer product down within 30 days. Brewster never published a public developer API, SDK, OpenAPI definition or developer
  portal, and no API surface survives today. This profile is retained as a historical record only.
url: https://raw.githubusercontent.com/api-evangelist/brewster/refs/heads/main/apis.yml
x-type: company
x-status: defunct
x-defunct-date: 2016-03
x-acquired-by: fullcontact
x-source: vc-portfolio
x-backed-by:
- slow-ventures
- union-square-ventures
x-tier: stub
x-tier-reason: defunct-no-api-surface
x-domain-note: brewster.com no longer belongs to this company — it 302-redirects to brewsterwallcovering.com, an unrelated
  wallcovering manufacturer. No pointer is wired to it.
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Defunct
- Contacts
- Address Book
- Mobile
- Social
- Consumer
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Crunchbase
  url: https://www.crunchbase.com/organization/brewster
- type: LinkedIn
  url: https://www.linkedin.com/company/brewster-inc
- type: InvestorProfile
  name: Union Square Ventures portfolio announcement
  url: https://usv.com/blog/brewster
- type: NewsCoverage
  name: FullContact buys Brewster's technology (TechCrunch, 2016-03-23)
  url: https://techcrunch.com/2016/03/23/fullcontact-buys-brewsters-technology-after-team-gets-acqui-hired-by-burger-king-owner-rbi/
- type: NewsCoverage
  name: Brewster team acqui-hired by RBI (TechCrunch, 2015-10-23)
  url: https://techcrunch.com/2015/10/23/brewster-contacts-app-team-gets-acqui-hired-by-burger-king-owner-rbi/
x-enrichment:
  date: '2026-07-20'
  status: nochange
  artifacts_added: 0
  pass: local-v1