Drawbridge

Drawbridge, Inc. was a San Mateo, California cross-device identity and digital advertising company founded in 2011 by Kamakshi Sivaramakrishnan (a former AdMob scientist). It built a people-based identity graph that used machine learning to probabilistically match individuals across their connected devices (desktops, smartphones, tablets, and connected TVs) so brands could serve and measure relevant advertising across devices. Backed by Kleiner Perkins, Sequoia Capital, Northgate Capital, and Mitsui & Co., the company raised roughly $69M across five rounds before it was acquired by LinkedIn in 2019 and folded into LinkedIn Marketing Solutions. Drawbridge no longer operates as an independent company and never published a public developer API or developer portal, so there is no live API surface to enrich; this profile records its identity as a historical Kleiner Perkins portfolio company.

Drawbridge is profiled on the APIs.io network. Tagged areas include Company, Enterprise, Advertising, Identity, and Cross-Device.

🌐 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

CompanyEnterpriseAdvertisingIdentityCross-DeviceMachine LearningAdTechAcquired

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

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Source (apis.yml)

aid: drawbridge
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/drawbridge.png
name: Drawbridge
description: Drawbridge, Inc. was a San Mateo, California cross-device identity and digital advertising company founded in
  2011 by Kamakshi Sivaramakrishnan (a former AdMob scientist). It built a people-based identity graph that used machine learning
  to probabilistically match individuals across their connected devices (desktops, smartphones, tablets, and connected TVs)
  so brands could serve and measure relevant advertising across devices. Backed by Kleiner Perkins, Sequoia Capital, Northgate
  Capital, and Mitsui & Co., the company raised roughly $69M across five rounds before it was acquired by LinkedIn in 2019
  and folded into LinkedIn Marketing Solutions. Drawbridge no longer operates as an independent company and never published
  a public developer API or developer portal, so there is no live API surface to enrich; this profile records its identity
  as a historical Kleiner Perkins portfolio company.
url: https://raw.githubusercontent.com/api-evangelist/drawbridge/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- kleiner-perkins
- sequoia-capital
- northgate-capital
- mitsui
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: linkedin
x-acquired-date: '2019'
x-founded: '2011'
x-headquarters: San Mateo, California, United States
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Enterprise
- Advertising
- Identity
- Cross-Device
- Machine Learning
- AdTech
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence