Interpublic Group

The Interpublic Group of Companies (IPG) is one of the world's largest advertising and marketing services holding companies, with networks including McCann Worldgroup, IPG Mediabrands, FCB, MullenLowe Group, and Acxiom. In 2024 Omnicom announced its acquisition of IPG; the combined brand operations now run under omc.com, and www.interpublic.com 301-redirects there. IPG publishes no unified public developer portal and no product REST API at the holding-company level - technology surfaces are delivered through agency-network products such as Acxiom data services and Mediabrands' identity and measurement platforms, all partner-gated. The one live, machine-readable HTTP contract on IPG's own host is the WordPress REST API still served from the apex interpublic.com origin, which carries the corporate newsroom (346 posts) and advertises 254 routes across 17 namespaces through its self-describing route-discovery document.

Interpublic Group publishes 4 APIs on the APIs.io network, including WordPress Wp/v2 API, WordPress Abilities API, oEmbed API, and 1 more. Tagged areas include Advertising, Marketing, Fortune 500, Holding Company, and Media.

The Interpublic Group catalog on APIs.io includes 1 Spectral governance ruleset.

Interpublic Group’s developer surface includes authentication and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.3/100 emerging ▬ flat Agent 27/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

4 APIs

Advertising Marketing Fortune 500 Holding Company Media Content WordPress Newsroom

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 17.3/100 · emerging

Contract Quality 3.6 / 23

Developer Ergonomics 5.5 / 18

Access Clarity 0.0 / 18

Operational Transparency 0.0 / 12

Contract Governance 0.5 / 11

Discoverability 6.7 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/interpublic: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Interpublic Group WordPress Wp/v2 API

WordPress core content API for the Interpublic Group corporate site - posts, pages, media, taxonomies, users, settings, blocks and templates. Read collections (posts, pages, med...

Interpublic Group WordPress Abilities API

WordPress Abilities API - the registry of named abilities an agent may discover and run on this install. Present in the route-discovery document with six routes; every route obs...

Interpublic Group oEmbed API

oEmbed discovery and proxy endpoints exposed by the Interpublic Group WordPress install, returning embeddable representations of newsroom URLs. Observed HTTP 200 anonymously.

Interpublic Group WordPress REST Index API

The REST API index / namespace-discovery route. GET https://interpublic.com/wp-json/ returns the self-describing document that enumerates all 254 routes across 17 namespaces, al...

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Interpublic Group WordPress REST oembed/1.0 API

OPEN COLLECTION

Interpublic Group WordPress REST Root API

OPEN COLLECTION

Interpublic Group WordPress REST wp-abilities/v1 API

OPEN COLLECTION

API Collection

OPEN COLLECTION

Interpublic Group WordPress REST wp/v2 API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Interpublic Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Interpublic Rate Limits

0 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Interpublic Group API Rules

0 rules ·

SPECTRAL

Security Posture 2

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

Interpublic Authentication

none/cookie · 2 schemes

SECURITY

Interpublic Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 1

Pricing, plans, and the legal terms of use

Plans

Plans

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 4

Properties that don't map to a standard resource type

Overlay

Successor

Acxiom

Mediabrands

Source (apis.yml)

aid: interpublic
name: Interpublic Group
description: The Interpublic Group of Companies (IPG) is one of the world's largest advertising and marketing services holding
  companies, with networks including McCann Worldgroup, IPG Mediabrands, FCB, MullenLowe Group, and Acxiom. In 2024 Omnicom
  announced its acquisition of IPG; the combined brand operations now run under omc.com, and www.interpublic.com 301-redirects
  there. IPG publishes no unified public developer portal and no product REST API at the holding-company level - technology
  surfaces are delivered through agency-network products such as Acxiom data services and Mediabrands' identity and measurement
  platforms, all partner-gated. The one live, machine-readable HTTP contract on IPG's own host is the WordPress REST API still
  served from the apex interpublic.com origin, which carries the corporate newsroom (346 posts) and advertises 254 routes
  across 17 namespaces through its self-describing route-discovery document.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - url: https://www.interpublic.com
    status: 301
    note: declared website redirects to https://www.omc.com/ — a different registrable domain (interpublic.com -> omc.com),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/interpublic.png
tags:
- Advertising
- Marketing
- Fortune 500
- Holding Company
- Media
- Content
- WordPress
- Newsroom
url: https://raw.githubusercontent.com/api-evangelist/interpublic/refs/heads/main/apis.yml
created: '2026-03-21'
modified: '2026-08-12'
specificationVersion: '0.23'
apis:
- aid: interpublic:wp-v2-api
  name: Interpublic Group WordPress Wp/v2 API
  description: WordPress core content API for the Interpublic Group corporate site - posts, pages, media, taxonomies, users,
    settings, blocks and templates. Read collections (posts, pages, media, categories, tags, search, types) answer anonymously
    with HTTP 200; users and settings answer HTTP 401 with the WordPress error envelope. Derived verbatim from the live route-discovery
    document at https://interpublic.com/wp-json/.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://interpublic.com
  tags:
  - Content
  - JSON
  - REST
  - WordPress
  - Newsroom
  properties:
  - type: OpenAPI
    url: openapi/interpublic-wp-v2-api-openapi.yml
  - type: Documentation
    url: https://developer.wordpress.org/rest-api/
  - type: APIReference
    url: https://developer.wordpress.org/rest-api/reference/
  - type: DataModel
    url: data-model/interpublic-data-model.yml
  - type: Overlay
    url: overlays/interpublic-wp-rest-overlay.yaml
- aid: interpublic:wp-abilities-v1-api
  name: Interpublic Group WordPress Abilities API
  description: WordPress Abilities API - the registry of named abilities an agent may discover and run on this install. Present
    in the route-discovery document with six routes; every route observed HTTP 401 (`rest_forbidden`) anonymously, and a control
    path on the same host answers 404, so the surface exists and is capability-gated.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://interpublic.com
  tags:
  - Abilities
  - Agents
  - WordPress
  properties:
  - type: OpenAPI
    url: openapi/interpublic-wp-abilities-v1-api-openapi.yml
  - type: Documentation
    url: https://developer.wordpress.org/rest-api/
- aid: interpublic:oembed-1-0-api
  name: Interpublic Group oEmbed API
  description: oEmbed discovery and proxy endpoints exposed by the Interpublic Group WordPress install, returning embeddable
    representations of newsroom URLs. Observed HTTP 200 anonymously.
  humanURL: https://oembed.com/
  baseURL: https://interpublic.com
  tags:
  - oEmbed
  - Embed
  - WordPress
  properties:
  - type: OpenAPI
    url: openapi/interpublic-oembed-1-0-api-openapi.yml
- aid: interpublic:root-api
  name: Interpublic Group WordPress REST Index API
  description: The REST API index / namespace-discovery route. GET https://interpublic.com/wp-json/ returns the self-describing
    document that enumerates all 254 routes across 17 namespaces, along with site identity (name "IPG", url https://www.interpublic.com).
    This document is the source every other spec in this repository was derived from.
  humanURL: https://interpublic.com/wp-json/
  baseURL: https://interpublic.com
  tags:
  - Discovery
  - Index
  - WordPress
  properties:
  - type: OpenAPI
    url: openapi/interpublic-root-api-openapi.yml
  - type: DiscoveryDocument
    url: openapi/interpublic-wp-rest-discovery-original.json
common:
- type: DomainSecurity
  url: security/interpublic-domain-security.yml
- type: Authentication
  url: authentication/interpublic-authentication.yml
- type: Conventions
  url: conventions/interpublic-conventions.yml
- type: Conformance
  url: conformance/interpublic-conformance.yml
- type: ErrorCatalog
  url: errors/interpublic-problem-types.yml
- type: Lifecycle
  url: lifecycle/interpublic-lifecycle.yml
- type: DataModel
  url: data-model/interpublic-data-model.yml
- type: Packages
  url: packages/interpublic-packages.yml
- type: RateLimits
  url: rate-limits/interpublic-rate-limits.yml
- type: Plans
  url: plans/interpublic-plans-pricing.yml
- type: LLMsTxt
  url: llms/interpublic-llms.txt
- type: Overlay
  url: overlays/interpublic-wp-rest-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/ipg
- type: Website
  url: https://www.interpublic.com
- type: Successor
  url: https://omc.com/
- type: Acxiom
  url: https://www.acxiom.com/
- type: Mediabrands
  url: https://www.ipgmediabrands.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-12'
  status: enriched
  artifacts_added: 20
  pass: local-v1

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