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

5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

0 APIs

Company Defunct Contacts Address Book Mobile Social Consumer Acquired

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 5.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

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

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/brewster: 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

Company 5

The organization behind the API

Crunchbase

Crunchbase

LinkedIn

InvestorProfile

InvestorProfile

NewsCoverage

NewsCoverage

NewsCoverage

NewsCoverage

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: '0.23'
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

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/brewster"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/brewster/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/brewster/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.