# Omnicom Group

**Canonical:** https://apis.io/providers/omnicom/  
**Website:** https://www.omc.com  
**APIs profiled:** 0

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.

## Kin Score — 10.3 / 100 (minimal)

Scored 2026-08-19 under rubric 0.12.0. Trend: flat (-0.3 from 10.6).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (2)

- **Omnicom Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Omnicom Vulnerability Disclosure** — Hackerone

## Tags

Fortune 500, Advertising, Marketing, Holding Company, Media, Public Relations, Marketing Technology, Commerce, Data and Analytics

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/omnicom/). Scores are computed from the provider's own public artifacts under a published rubric.