Buysight

Buysight, Inc. was a Silicon Valley advertising technology startup founded in 2008 that built intent-based audience targeting, retargeting, and Dynamic Creative Optimization (DCO) for display advertising, using machine learning to select both the audience for an impression and the creative shown to that user. The company raised approximately $16 million from ONSET Ventures, Rembrandt Venture Partners, Uncork Capital (SoftTech VC / Jeff Clavier), Reid Hoffman, and AOL. On December 4, 2012 Buysight was acquired by AOL's Advertising.com Group, with the entire team joining AOL and the DCO and machine-learning technology folded into AOL's AdLearn optimization engine alongside Advertising.com, ADTECH, the AOL On Network, goviral, and Pictela. Buysight no longer operates as an independent company and publishes no developer program, API, documentation, or SDKs. The buysight.com domain is held by MarkMonitor and redirects to a registrar placeholder page. This profile is retained as a historical acquisition record in the API Evangelist network.

Buysight is profiled on the APIs.io network. Tagged areas include Company, Advertising, Advertising Technology, AdTech, and Retargeting.

📡 Source on GitHub
5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
CompanyAdvertisingAdvertising TechnologyAdTechRetargetingAudience TargetingDynamic Creative OptimizationMarketingMachine-LearningAcquiredDefunct

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
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.
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Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Buysight Domain Security

no transport/DNS hardening detected

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Source (apis.yml)

apis.yml Raw ↑ 
aid: buysight
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: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/buysight.png
name: Buysight
description: Buysight, Inc. was a Silicon Valley advertising technology startup founded in 2008 that built intent-based audience
  targeting, retargeting, and Dynamic Creative Optimization (DCO) for display advertising, using machine learning to select
  both the audience for an impression and the creative shown to that user. The company raised approximately $16 million from
  ONSET Ventures, Rembrandt Venture Partners, Uncork Capital (SoftTech VC / Jeff Clavier), Reid Hoffman, and AOL. On December
  4, 2012 Buysight was acquired by AOL's Advertising.com Group, with the entire team joining AOL and the DCO and machine-learning
  technology folded into AOL's AdLearn optimization engine alongside Advertising.com, ADTECH, the AOL On Network, goviral,
  and Pictela. Buysight no longer operates as an independent company and publishes no developer program, API, documentation,
  or SDKs. The buysight.com domain is held by MarkMonitor and redirects to a registrar placeholder page. This profile is retained
  as a historical acquisition record in the API Evangelist network.
url: https://raw.githubusercontent.com/api-evangelist/buysight/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- uncork-capital
x-tier: stub
x-tier-reason: defunct-acquired-no-api-surface
x-status: acquired
x-acquired-by: AOL (Advertising.com Group)
x-acquired-date: '2012-12-04'
x-operating: false
x-references:
- name: AOL's Advertising.com Group Acquires Buysight, Inc. (press release)
  url: https://www.businesswire.com/news/home/20121204006733/en/AOL%E2%80%99s-Advertising.com-Group-Acquires-Buysight-Inc.
- name: AOL's Advertising.com Group Acquires Retargeting Startup Buysight (TechCrunch)
  url: https://techcrunch.com/2012/12/04/aol-advertising-com-acquires-buysight/
- name: AOL Bulks Up Ad.com By Acquiring Retargeter Buysight (AdExchanger)
  url: https://www.adexchanger.com/online-advertising/aol-bulks-up-ad-com-by-acquiring-retargeter-buysight/
- name: Buysight - Crunchbase Company Profile & Funding
  url: https://www.crunchbase.com/organization/buysight
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Advertising
- Advertising Technology
- AdTech
- Retargeting
- Audience Targeting
- Dynamic Creative Optimization
- Marketing
- Machine-Learning
- Acquired
- Defunct
tags_raw:
- Company
- Advertising
- Advertising Technology
- AdTech
- Retargeting
- Audience Targeting
- Dynamic Creative Optimization
- Marketing
- Machine Learning
- Acquired
- Defunct
apis: []
common:
- type: DomainSecurity
  name: Domain Security Probe
  url: security/buysight-domain-security.yml
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

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