Omnicom Group website screenshot

Omnicom Group

Omnicom Group Inc. (NYSE: OMC) is the world's largest marketing and sales communications holding company, formed in its current shape when Omnicom completed its acquisition of Interpublic Group on 26 November 2025, combining pro forma revenue in excess of $25 billion. The company operates across advertising, media, precision marketing, commerce, public relations, healthcare, branding, experiential and production, serving clients in more than 100 countries through agency networks including BBDO, DDB, TBWA, OMD, PHD, Hearts & Science, McCann, FCB, Mediabrands, Flywheel and Acxiom. Its Omni platform — built and operated by Annalect, Omnicom's data, technology and AI division — is marketed as an AI-driven marketing intelligence operating system spanning orchestration, production, predictive intelligence and outcome-driven activation, and is grounded in Acxiom Real ID identity data. As of the 2026-08-12 probe, Omnicom publishes no public developer program: no developer portal, API reference, OpenAPI/AsyncAPI/GraphQL document, SDK, MCP server or A2A agent card is served from any Omnicom host. The corporate site moved from omnicomgroup.com to omc.com, which 301-redirects the legacy domain.

Omnicom Group is profiled on the APIs.io network. Tagged areas include Fortune 500, Advertising, Marketing, Holding Company, and Media.

10.6/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
0 APIs
Fortune 500AdvertisingMarketingHolding CompanyMediaPublic RelationsMarketing TechnologyCommerceData and Analytics

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 10.6/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 5.7 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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/omnicom: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 2

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

Omnicom Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 1

Authentication, authorization, and security posture

Commercial 2

Pricing, plans, and the legal terms of use

Company 4

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: omnicom
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/omnicom.png
name: Omnicom Group
url: https://raw.githubusercontent.com/api-evangelist/omnicom/refs/heads/main/apis.yml
created: '2026-03-21'
modified: '2026-08-12'
specificationVersion: '0.19'
apis: []
tags:
- Fortune 500
- Advertising
- Marketing
- Holding Company
- Media
- Public Relations
- Marketing Technology
- Commerce
- Data and Analytics
common:
- type: Website
  url: https://www.omc.com
- type: LinkedIn
  url: https://www.linkedin.com/company/omnicom
- type: Newsroom
  url: https://www.omc.com/news/
- type: Investor Relations
  url: https://investor.omc.com
- type: TermsOfService
  url: https://www.omc.com/terms-of-use/
- type: PrivacyPolicy
  url: https://www.omc.com/privacy-notice/
- type: GitHubOrganization
  url: https://github.com/annalect
- type: DomainSecurity
  url: security/omnicom-domain-security.yml
- type: LLMsTxt
  url: llms/omnicom-llms.txt
description: 'Omnicom Group Inc. (NYSE: OMC) is the world''s largest marketing and sales communications holding company, formed
  in its current shape when Omnicom completed its acquisition of Interpublic Group on 26 November 2025, combining pro forma
  revenue in excess of $25 billion. The company operates across advertising, media, precision marketing, commerce, public
  relations, healthcare, branding, experiential and production, serving clients in more than 100 countries through agency
  networks including BBDO, DDB, TBWA, OMD, PHD, Hearts & Science, McCann, FCB, Mediabrands, Flywheel and Acxiom. Its Omni
  platform — built and operated by Annalect, Omnicom''s data, technology and AI division — is marketed as an AI-driven marketing
  intelligence operating system spanning orchestration, production, predictive intelligence and outcome-driven activation,
  and is grounded in Acxiom Real ID identity data. As of the 2026-08-12 probe, Omnicom publishes no public developer program:
  no developer portal, API reference, OpenAPI/AsyncAPI/GraphQL document, SDK, MCP server or A2A agent card is served from
  any Omnicom host. The corporate site moved from omnicomgroup.com to omc.com, which 301-redirects the legacy domain.'
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com
x-enrichment:
  date: '2026-08-12'
  status: minimal
  artifacts_added: 3
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: Omnicom markets the Omni platform heavily but ships it only as an agency/client application at omni.omc.com — an
    Angular SPA that 301s every unknown path to /home/ and then answers 200 with the same HTML shell — and publishes no developer
    portal, API reference, spec or SDK anywhere; api., developer. and docs.omc.com do not resolve in DNS.
  evidence:
  - url: https://www.omc.com/openapi.json
    status: 404
  - url: https://www.omc.com/.well-known/agent-card.json
    status: 404
  - url: https://omni.omc.com/openapi.json
    status: 301
  - url: https://www.omc.com/llms.txt
    status: 404
  - url: https://www.omc.com/wp-json/
    status: 403
  checked: '2026-08-12'