GumGum

GumGum is a Santa Monica-based advertising technology company, founded in 2008, that sells contextual, CTV/online-video and high-impact display advertising built on its own content intelligence. Its GumGum Contextual platform (formerly Verity) uses in-house computer vision and natural language processing to read the text, images, video and audio of a page or asset before the bid, returning IAB Content Taxonomy classifications (v1, v2 and v3), extracted keywords, named entities, brand-safety and suitability threats, and sentiment. That analysis is exposed to publishers, DSPs, agencies and advertisers as a server-to-server REST API at verity-api.gumgum.com with separate Page, Video, Intravideo, Image and Text surfaces, plus an asynchronous webhook callback for delivering completed classifications. GumGum also ships an open-source Prebid.js bid adapter for header bidding, and holds Media Rating Council accreditation for content-level classification across desktop, mobile web and CTV.

GumGum publishes 1 API on the APIs.io network: Contextual API. Tagged areas include Advertising, AdTech, Contextual Advertising, Brand Safety, and Content Classification.

The GumGum catalog on APIs.io includes 1 event-driven AsyncAPI specification.

GumGum’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, changelog, authentication, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.5/100 developing ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

2 APIs 1 MCP Servers

Advertising AdTech Contextual Advertising Brand SafetyContent ClassificationComputer-Vision Natural Language Processing Video Analysis Image Analysis Connected TV Header Bidding Programmatic Advertisingiab-taxonomyContent Moderation

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 53.5/100 · developing

Contract Quality 16.8 / 25

Developer Ergonomics 11.8 / 20

Access Clarity 7.1 / 20

Operational Transparency 5.5 / 13

Contract Governance 3.6 / 12

Discoverability 8.7 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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 Surface 0 / 5

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/gumgum: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Documentation 3

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

AgentSkill

AgenticAccess

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Webhooks

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Components

Arazzo

Scroll for all 8

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 3

Authentication, authorization, and security posture

Compliance

Compliance

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 5

Status, limits, changes, and where to get help

IssueTracker

Releases

Support

StatusPage

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

License

License

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: gumgum
name: GumGum
description: GumGum is a Santa Monica-based advertising technology company, founded in 2008, that sells contextual, CTV/online-video
  and high-impact display advertising built on its own content intelligence. Its GumGum Contextual platform (formerly Verity)
  uses in-house computer vision and natural language processing to read the text, images, video and audio of a page or asset
  before the bid, returning IAB Content Taxonomy classifications (v1, v2 and v3), extracted keywords, named entities, brand-safety
  and suitability threats, and sentiment. That analysis is exposed to publishers, DSPs, agencies and advertisers as a server-to-server
  REST API at verity-api.gumgum.com with separate Page, Video, Intravideo, Image and Text surfaces, plus an asynchronous webhook
  callback for delivering completed classifications. GumGum also ships an open-source Prebid.js bid adapter for header bidding,
  and holds Media Rating Council accreditation for content-level classification across desktop, mobile web and CTV.
image: https://cdn.prod.website-files.com/69eee532313396005f3a101b/6a332287fbe7e4cb30bb3ad4_gumgum-metadata-image.jpg
url: https://raw.githubusercontent.com/api-evangelist/gumgum/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-01'
modified: '2026-08-01'
tags:
- Advertising
- AdTech
- Contextual Advertising
- Brand Safety
- Content Classification
- Computer-Vision
- Natural Language Processing
- Video Analysis
- Image Analysis
- Connected TV
- Header Bidding
- Programmatic Advertising
- iab-taxonomy
- Content Moderation
tags_raw:
- advertising
- adtech
- contextual-advertising
- brand-safety
- content-classification
- computer-vision
- natural-language-processing
- video-analysis
- image-analysis
- connected-tv
- header-bidding
- programmatic-advertising
- iab-taxonomy
- content-moderation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: GumGum Contextual API
  description: 'Server-to-server REST API returning content-level contextual classification, brand safety and suitability,
    and sentiment analysis for web pages, video (including audio), individual video frames, images and raw text. Analysis
    is asynchronous: submit an asset, receive a UUID, then poll for the result or supply a callback URL for webhook delivery.
    Authenticated with an X-api-key request header.'
  humanURL: https://gumgum.jira.com/wiki/spaces/VDC
  baseURL: https://verity-api.gumgum.com
  tags:
  - Contextual Advertising
  - Brand Safety
  - Content Classification
  - Computer-Vision
  - Natural Language Processing
  - Video Analysis
  - Image Analysis
  - iab-taxonomy
  tags_raw:
  - contextual-advertising
  - brand-safety
  - content-classification
  - computer-vision
  - natural-language-processing
  - video-analysis
  - image-analysis
  - iab-taxonomy
  properties:
  - type: OpenAPI
    url: openapi/gumgum-contextual-api-openapi.yml
  - type: Documentation
    url: https://gumgum.jira.com/wiki/spaces/VDC
  - type: APIReference
    url: https://gumgum.jira.com/wiki/spaces/VDC/pages/1712030855
  - type: GettingStarted
    url: https://gumgum.jira.com/wiki/spaces/VDC/pages/1712095256
  - type: Overlay
    url: overlays/gumgum-contextual-api-overlay.yaml
  - type: Webhooks
    url: asyncapi/gumgum-contextual-webhooks.yml
- name: GumGum Prebid Header Bidding Endpoint
  description: GumGum's real-time bidding endpoint for header bidding, integrated through the open-source Prebid.js gumgumBidAdapter
    (bidder code gumgum, alias gg, IAB GVL ID 61). Supports banner, native and video media types. Bid requests are POSTed
    to the hbid/imp path by the adapter.
  humanURL: https://docs.prebid.org/dev-docs/bidders/gumgum.html
  baseURL: https://g2.gumgum.com
  tags:
  - Header Bidding
  - Programmatic Advertising
  - Advertising
  - Real-Time Bidding
  tags_raw:
  - header-bidding
  - programmatic-advertising
  - advertising
  - real-time-bidding
  properties:
  - type: Documentation
    url: https://docs.prebid.org/dev-docs/bidders/gumgum.html
  - type: SourceCode
    url: https://github.com/prebid/Prebid.js/blob/master/modules/gumgumBidAdapter.js
common:
- type: MCPServer
  url: mcp/gumgum-mcp.yml
- type: IssueTracker
  url: https://github.com/prebid/Prebid.js/issues
- type: Releases
  url: https://github.com/prebid/Prebid.js/releases
- type: ContributionGuide
  url: https://github.com/prebid/Prebid.js/blob/master/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/prebid/Prebid.js/blob/master/LICENSE
- type: Website
  url: https://gumgum.com/
- type: DeveloperPortal
  url: https://gumgum.jira.com/wiki/spaces/VDC
- type: Documentation
  url: https://gumgum.jira.com/wiki/spaces/VDC
- type: APIReference
  url: https://gumgum.jira.com/wiki/spaces/VDC/pages/1712030855
- type: GettingStarted
  url: https://gumgum.jira.com/wiki/spaces/VDC/pages/1712095256
- type: Support
  url: https://gumgum.jira.com/wiki/spaces/VDC/pages/1728217585
- type: Blog
  url: https://gumgum.com/blog
- type: GitHubOrganization
  url: https://github.com/gumgum
- type: Login
  url: https://contextual.gumgum.com/
- type: TermsOfService
  url: https://gumgum.com/terms-and-policies
- type: PrivacyPolicy
  url: https://gumgum.com/privacy-policy
- type: StatusPage
  url: https://status.contextual.gumgum.com
- type: ChangeLog
  url: changelog/gumgum-changelog.yml
- type: Webhooks
  url: asyncapi/gumgum-contextual-webhooks.yml
- type: Compliance
  url: https://gumgum.com/accreditation
- type: LLMsTxt
  url: llms/gumgum-llms.txt
- type: Authentication
  url: authentication/gumgum-authentication.yml
- type: Conventions
  url: conventions/gumgum-conventions.yml
- type: ErrorCatalog
  url: errors/gumgum-problem-types.yml
- type: Lifecycle
  url: lifecycle/gumgum-lifecycle.yml
- type: Conformance
  url: conformance/gumgum-conformance.yml
- type: DataModel
  url: data-model/gumgum-data-model.yml
- type: Packages
  url: packages/gumgum-packages.yml
- type: Components
  url: components/gumgum-components.yml
- type: DomainSecurity
  url: security/gumgum-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/gumgum-agentic-access.yml
- type: Arazzo
  name: Classify a video and retrieve the result
  url: arazzo/gumgum-classify-video.yml
x-enrichment:
  date: '2026-08-01'
  status: enriched
  artifacts_added: 23
  pass: local-v1

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GumGum

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APIs 2

GumGum Contextual API

GumGum Prebid Header Bidding Endpoint

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GumGum Contextual API

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Classify a video with GumGum Contextual and retrieve the result

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