Zemanta website screenshot

Zemanta

Zemanta is a native advertising and content-recommendation technology company founded in 2007 (Ljubljana, Slovenia and New York), best known for Zemanta One, a self-serve programmatic demand-side platform (DSP) for native advertising. Outbrain acquired Zemanta in 2017 and the DSP now trades as Teads DSP. The product line survived both the acquisition and the rebrand, and its API is live — the Teads DSP REST Campaign Management API, the former Zemanta One API, is still served from Zemanta-owned hosts, with the API endpoint at https://oneapi.zemanta.com/rest/v1 and a complete public reference at https://dev.zemanta.com/one/api/. The API covers accounts, credits, campaigns, budgets, goals, ad groups, ads, creatives, video assets, bid modifiers, measurement services, conversion definitions, audiences, publisher groups, deals, keyword lists, reporting and real-time statistics. Authentication is two-legged OAuth 2.0 client credentials; access is granted through a sales relationship rather than self-service sign-up. The console host one.zemanta.com 301-redirects every path to the matching path on dsp.outbrain.com.

Zemanta publishes 1 API on the APIs.io network. Tagged areas include Company, Advertising, Native Advertising, Programmatic, and DSP.

Zemanta’s developer surface includes documentation, API reference, support, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub
25.0/100 emerging ▬ flat Agent 8/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs
CompanyAdvertisingNative AdvertisingProgrammaticDSPAdTechContent RecommendationMarketingCampaign ManagementDemand-Side PlatformMedia Buying

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 25.0/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 7.6 / 20
Access Clarity 5.5 / 20
Operational Transparency 4.4 / 13
Contract Governance 0.5 / 12
Discoverability 6.9 / 10
Agent readiness — 8/100 · agent aware
Machine-Readable Contract 0 / 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 0 / 7
Rate-Limit Signaling 7 / 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.
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/zemanta: 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 1

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

Teads DSP API (Zemanta One)

The Teads DSP REST Campaign Management API, formerly the Zemanta One API. It lets Teads DSP clients programmatically create and manage accounts, campaigns, budgets, campaign goa...

Pricing Plans 1

Published pricing tiers and plan structures.

Zemanta Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Zemanta Rate Limits

1 limits

RATE LIMITS

Security Posture 3

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

Zemanta Authentication

2 schemes

SECURITY

Zemanta Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Zemanta Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Zemanta Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 DataModel
DataModel
 Lifecycle
Lifecycle
 Conformance
Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages

Access & Security 6

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 2

Status, limits, changes, and where to get help

Support
Support
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: zemanta
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: sales
  trial: false
  try_now: false
  public: false
  label: Sales-gated
  confidence: high
  source:
  - https://dev.zemanta.com/one/api/
  - https://intercom.help/outbrain_dsp/en/articles/8225692-zemanta-api
  generated: '2026-08-12'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zemanta.png
name: Zemanta
description: Zemanta is a native advertising and content-recommendation technology company founded in 2007 (Ljubljana, Slovenia
  and New York), best known for Zemanta One, a self-serve programmatic demand-side platform (DSP) for native advertising.
  Outbrain acquired Zemanta in 2017 and the DSP now trades as Teads DSP. The product line survived both the acquisition and
  the rebrand, and its API is live — the Teads DSP REST Campaign Management API, the former Zemanta One API, is still served
  from Zemanta-owned hosts, with the API endpoint at https://oneapi.zemanta.com/rest/v1 and a complete public reference at
  https://dev.zemanta.com/one/api/. The API covers accounts, credits, campaigns, budgets, goals, ad groups, ads, creatives,
  video assets, bid modifiers, measurement services, conversion definitions, audiences, publisher groups, deals, keyword lists,
  reporting and real-time statistics. Authentication is two-legged OAuth 2.0 client credentials; access is granted through
  a sales relationship rather than self-service sign-up. The console host one.zemanta.com 301-redirects every path to the
  matching path on dsp.outbrain.com.
url: https://raw.githubusercontent.com/api-evangelist/zemanta/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- seedcamp
- union-square-ventures
x-tier: profiled
x-tier-reason: acquired-by-outbrain-2017-api-live-as-teads-dsp
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-12'
tags:
- Company
- Advertising
- Native Advertising
- Programmatic
- DSP
- AdTech
- Content Recommendation
- Marketing
- Campaign Management
- Demand-Side Platform
- Media Buying
tags_raw:
- Company
- Advertising
- Native Advertising
- Programmatic
- DSP
- AdTech
- Content Recommendation
- Marketing
- Campaign Management
- Demand Side Platform
- Media Buying
apis:
- aid: zemanta:teads-dsp-api
  name: Teads DSP API (Zemanta One)
  description: The Teads DSP REST Campaign Management API, formerly the Zemanta One API. It lets Teads DSP clients programmatically
    create and manage accounts, campaigns, budgets, campaign goals, ad groups, ad group sources, ads, creatives, video assets,
    bid modifiers, measurement services, conversion definitions, audiences, publisher groups, publisher blacklists, deals
    and keyword lists, and pull custom performance reports and real-time statistics. Two-legged OAuth 2.0 client credentials,
    JSON payloads wrapped in a data envelope, marker-offset pagination and a 30 request-per-second per-user rate limit.
  humanURL: https://dev.zemanta.com/one/api/
  baseURL: https://oneapi.zemanta.com/rest/v1
  tags:
  - Advertising
  - Campaign Management
  - Programmatic
  - DSP
  - Reporting
  - Audiences
  properties:
  - type: Documentation
    url: https://dev.zemanta.com/one/api/
  - type: APIReference
    url: https://dev.zemanta.com/one/api/
  - type: Authentication
    url: authentication/zemanta-authentication.yml
  - type: OAuthScopes
    url: scopes/zemanta-scopes.yml
  - type: RateLimits
    url: rate-limits/zemanta-rate-limits.yml
  - type: ErrorCatalog
    url: errors/zemanta-problem-types.yml
  - type: Conventions
    url: conventions/zemanta-conventions.yml
  - type: DataModel
    url: data-model/zemanta-data-model.yml
  - type: Lifecycle
    url: lifecycle/zemanta-lifecycle.yml
  - type: Conformance
    url: conformance/zemanta-conformance.yml
  - type: Plans
    url: plans/zemanta-plans-pricing.yml
  - type: Support
    url: https://intercom.help/outbrain_dsp/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/zemanta-domain-security.yml
- type: Website
  url: https://zemanta.com
- type: TermsOfService
  url: https://vault.pactsafe.io/s/9ac72792-c7df-4d0d-832d-0ca873f73a64/legal.html#terms-of-service
- type: PrivacyPolicy
  url: https://www.outbrain.com/privacy/privacy-policy-outbrain-dsp/
- type: DeveloperPortal
  url: https://www.zemanta.com/api/
- type: Documentation
  url: https://dev.zemanta.com/one/api/
- type: APIReference
  url: https://dev.zemanta.com/one/api/
- type: Support
  url: https://intercom.help/outbrain_dsp/
- type: GitHubOrganization
  url: https://github.com/Zemanta
- type: Login
  url: https://one.zemanta.com/
- type: Authentication
  url: authentication/zemanta-authentication.yml
- type: OAuthScopes
  url: scopes/zemanta-scopes.yml
- type: RateLimits
  url: rate-limits/zemanta-rate-limits.yml
- type: ErrorCatalog
  url: errors/zemanta-problem-types.yml
- type: Conventions
  url: conventions/zemanta-conventions.yml
- type: DataModel
  url: data-model/zemanta-data-model.yml
- type: Lifecycle
  url: lifecycle/zemanta-lifecycle.yml
- type: Conformance
  url: conformance/zemanta-conformance.yml
- type: Plans
  url: plans/zemanta-plans-pricing.yml
- type: Packages
  url: packages/zemanta-packages.yml
- type: LLMsTxt
  url: llms/zemanta-llms.txt
- type: SecurityTxt
  url: well-known/zemanta-security.txt
- type: VulnerabilityDisclosure
  url: security/zemanta-vulnerability-disclosure.yml
- type: Security
  url: security/zemanta-vulnerability-disclosure.yml
x-enrichment:
  date: '2026-08-12'
  status: enriched
  artifacts_added: 14
  pass: local-v1

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