Opera

Opera is the Norway-based, Nasdaq-listed (OPRA) maker of the Opera, Opera GX, Opera Air, Opera Mini and Opera Neon web browsers, and the operator of the Opera Ads advertising and monetization platform. Opera Ads exposes six documented HTTP APIs: an advertiser Report API for daily campaign performance, a publisher Inventory Management API for apps and placements, a publisher OFP Report API for revenue and delivery, an ADX DSP Report API for exchange performance, a server-to-server Marketing API for conversion postbacks, and a TUS 1.0.0 resumable File Upload API. Around them sit Android and iOS ad SDKs with mediation adapters for AdMob, AppLovin MAX, TopOn, TradPlus and LevelPlay, an OpenRTB/ADX exchange with Prebid.js and Prebid Server adapters, a web JS ad tag, first-party Go OpenRTB and VAST libraries, and the self-serve Opera Ad Manager console. Authentication differs per API — bearer token, token query parameter, X-API-Key or HMAC signature — and every credential is issued by contacting Opera Ads.

Opera publishes 7 APIs on the APIs.io network, including Inventory API, Marketing API, Report API, and 4 more. Tagged areas include Company, Consumer Technology, Advertising, AdTech, and Browser.

Opera’s developer surface includes authentication, changelog, sandbox, documentation, API reference, getting-started guide, engineering blog, and 29 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.2/100 developing ▬ flat Agent 29/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

4 APIs

Company Consumer Technology Advertising AdTech Browser Monetization OpenRTB Marketing Mobile SDK Header Bidding Publisher Monetization Reporting

Kin Score

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

Composite quality — 45.2/100 · developing

Contract Quality 4.0 / 23

Developer Ergonomics 13.2 / 18

Access Clarity 8.0 / 18

Operational Transparency 5.9 / 12

Contract Governance 2.0 / 11

Discoverability 7.3 / 9

Create-or-Update Ergonomics 1.1 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 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/opera: 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 7

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

Opera Inventory API

Publisher app and placement (inventory) management.

Opera Marketing API

Server-to-server conversion event reporting.

Opera Report API

Advertiser reporting on campaign performance.

Opera DSP Report API

DSP-side exchange performance reporting.

Opera File Management API

Listing and inspecting uploads.

Opera Publisher Report API

Publisher revenue and delivery reporting.

Opera Upload API

TUS resumable upload session lifecycle.

Scroll for all 7

Open Collections 4

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

API Collection

OPEN COLLECTION

Opera Ads Open Inventory API

OPEN COLLECTION

Opera Ads Open Inventory Marketing API

OPEN COLLECTION

Opera Ads Open Inventory Report API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Opera Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Opera Rate Limits

1 limits

RATE LIMITS

Security Posture 3

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

Opera Authentication

http/apiKey/custom-hmac/unauthenticated · 5 schemes

SECURITY

Opera Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Opera Vulnerability Disclosure

Bugcrowd · security.txt · contact published

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

WellKnown

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

ErrorCodes

Lifecycle

Conventions

DataModel

Components

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

ToolCrosswalk

ToolCrosswalk

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

SecurityTxt

SecurityTxt

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: opera
name: Opera
description: 'Opera is the Norway-based, Nasdaq-listed (OPRA) maker of the Opera, Opera GX, Opera Air, Opera Mini and Opera
  Neon web browsers, and the operator of the Opera Ads advertising and monetization platform. Opera Ads exposes six documented
  HTTP APIs: an advertiser Report API for daily campaign performance, a publisher Inventory Management API for apps and placements,
  a publisher OFP Report API for revenue and delivery, an ADX DSP Report API for exchange performance, a server-to-server
  Marketing API for conversion postbacks, and a TUS 1.0.0 resumable File Upload API. Around them sit Android and iOS ad SDKs
  with mediation adapters for AdMob, AppLovin MAX, TopOn, TradPlus and LevelPlay, an OpenRTB/ADX exchange with Prebid.js and
  Prebid Server adapters, a web JS ad tag, first-party Go OpenRTB and VAST libraries, and the self-serve Opera Ad Manager
  console. Authentication differs per API — bearer token, token query parameter, X-API-Key or HMAC signature — and every credential
  is issued by contacting Opera Ads.'
url: https://raw.githubusercontent.com/api-evangelist/opera/refs/heads/main/apis.yml
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: contact-sales
  onboarding: sales-assisted
  trial: false
  try_now: false
  public: false
  label: Contact sales for API credentials
  confidence: high
  source:
  - authentication
  - plans
  generated: '2026-08-13'
  method: searched
image: https://github.com/operaads.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- idg-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Consumer Technology
- Advertising
- AdTech
- Browser
- Monetization
- OpenRTB
- Marketing
- Mobile SDK
- Header Bidding
- Publisher Monetization
- Reporting
apis:
- aid: opera:opera-inventory-api
  name: Opera Inventory API
  description: Publisher app and placement (inventory) management.
  humanURL: https://doc.adx.opera.com/publisher/inventory-management-api
  baseURL: https://ofp.adx.opera.com/openapi/inventory/v1
  tags:
  - Inventory
  properties:
  - type: OpenAPI
    url: openapi/opera-inventory-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/publisher/inventory-management-api
  - type: APIReference
    url: https://doc.adx.opera.com/publisher/inventory-management-api
- aid: opera:opera-marketing-api
  name: Opera Marketing API
  description: Server-to-server conversion event reporting.
  humanURL: https://doc.adx.opera.com/advertiser/events-integration/server-to-server-marketing-api
  baseURL: https://cb.adx.opera.com
  tags:
  - Marketing
  properties:
  - type: OpenAPI
    url: openapi/opera-marketing-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/advertiser/events-integration/
  - type: APIReference
    url: https://doc.adx.opera.com/advertiser/events-integration/server-to-server-marketing-api
- aid: opera:opera-report-api
  name: Opera Report API
  description: Advertiser reporting on campaign performance.
  humanURL: https://doc.adx.opera.com/advertiser/report-api
  baseURL: https://ofa.adx.opera.com/oapi/v1
  tags:
  - Report
  properties:
  - type: OpenAPI
    url: openapi/opera-report-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/advertiser/report-api
  - type: APIReference
    url: https://doc.adx.opera.com/advertiser/report-api
- aid: opera:opera-dspreport-api
  name: Opera DSP Report API
  description: DSP-side exchange performance reporting.
  humanURL: https://doc.adx.opera.com/publisher/inventory-management-api
  baseURL: https://ofp.adx.opera.com/openapi/inventory/v1
  tags:
  - DSPReport
  properties:
  - type: OpenAPI
    url: openapi/opera-dspreport-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/publisher/ofp/report
  - type: APIReference
    url: https://doc.adx.opera.com/adx/ssp/report
  - type: Documentation
    url: https://doc.adx.opera.com/adx/dsp/
  - type: APIReference
    url: https://doc.adx.opera.com/adx/dsp/report-api
  - type: Documentation
    url: https://doc.adx.opera.com/advertiser/file_upload_api
  - type: APIReference
    url: https://doc.adx.opera.com/advertiser/file_upload_api
- aid: opera:opera-filemanagement-api
  name: Opera File Management API
  description: Listing and inspecting uploads.
  humanURL: https://doc.adx.opera.com/publisher/inventory-management-api
  baseURL: https://ofp.adx.opera.com/openapi/inventory/v1
  tags:
  - File Management
  tags_raw:
  - FileManagement
  properties:
  - type: OpenAPI
    url: openapi/opera-filemanagement-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/publisher/ofp/report
  - type: APIReference
    url: https://doc.adx.opera.com/adx/ssp/report
  - type: Documentation
    url: https://doc.adx.opera.com/adx/dsp/
  - type: APIReference
    url: https://doc.adx.opera.com/adx/dsp/report-api
  - type: Documentation
    url: https://doc.adx.opera.com/advertiser/file_upload_api
  - type: APIReference
    url: https://doc.adx.opera.com/advertiser/file_upload_api
- aid: opera:opera-publisherreport-api
  name: Opera Publisher Report API
  description: Publisher revenue and delivery reporting.
  humanURL: https://doc.adx.opera.com/publisher/inventory-management-api
  baseURL: https://ofp.adx.opera.com/openapi/inventory/v1
  tags:
  - PublisherReport
  properties:
  - type: OpenAPI
    url: openapi/opera-publisherreport-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/publisher/ofp/report
  - type: APIReference
    url: https://doc.adx.opera.com/adx/ssp/report
  - type: Documentation
    url: https://doc.adx.opera.com/adx/dsp/
  - type: APIReference
    url: https://doc.adx.opera.com/adx/dsp/report-api
  - type: Documentation
    url: https://doc.adx.opera.com/advertiser/file_upload_api
  - type: APIReference
    url: https://doc.adx.opera.com/advertiser/file_upload_api
- aid: opera:opera-upload-api
  name: Opera Upload API
  description: TUS resumable upload session lifecycle.
  humanURL: https://doc.adx.opera.com/publisher/inventory-management-api
  baseURL: https://ofp.adx.opera.com/openapi/inventory/v1
  tags:
  - Upload
  properties:
  - type: OpenAPI
    url: openapi/opera-upload-api-openapi.yml
  - type: Documentation
    url: https://doc.adx.opera.com/publisher/ofp/report
  - type: APIReference
    url: https://doc.adx.opera.com/adx/ssp/report
  - type: Documentation
    url: https://doc.adx.opera.com/adx/dsp/
  - type: APIReference
    url: https://doc.adx.opera.com/adx/dsp/report-api
  - type: Documentation
    url: https://doc.adx.opera.com/advertiser/file_upload_api
  - type: APIReference
    url: https://doc.adx.opera.com/advertiser/file_upload_api
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/opera-ads-overlay.yaml
- type: Authentication
  url: authentication/opera-authentication.yml
- type: DomainSecurity
  url: security/opera-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/opera-vulnerability-disclosure.yml
- type: Security
  url: https://security.opera.com/policy/
- type: Packages
  url: packages/opera-packages.yml
- type: SDKs
  url: packages/opera-packages.yml
- type: X-MCPServerCandidate
  url: mcp/opera-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: ToolCrosswalk
  url: mcp/opera-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/opera-llms.txt
- type: WellKnown
  url: well-known/opera-well-known.yml
- type: SecurityTxt
  url: well-known/opera-security.txt
- type: Conformance
  url: conformance/opera-conformance.yml
- type: ErrorCatalog
  url: errors/opera-problem-types.yml
- type: ErrorCodes
  url: errors/opera-sdk-error-codes.yml
- type: Lifecycle
  url: lifecycle/opera-lifecycle.yml
- type: Conventions
  url: conventions/opera-conventions.yml
- type: DataModel
  url: data-model/opera-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: RateLimits
  url: rate-limits/opera-rate-limits.yml
- type: Plans
  url: plans/opera-plans-pricing.yml
- type: ChangeLog
  url: changelog/opera-changelog.yml
- type: Sandbox
  url: sandbox/opera-sandbox.yml
- type: Components
  url: components/opera-components.yml
- type: DeveloperPortal
  url: https://doc.adx.opera.com/
- type: Documentation
  url: https://doc.adx.opera.com/
- type: APIReference
  url: https://doc.adx.opera.com/advertiser/report-api
- type: GettingStarted
  url: https://doc.adx.opera.com/publisher/onboarding/
- type: GitHubOrganization
  url: https://github.com/operaads
- type: Blog
  url: https://blogs.opera.com/ads/
- type: Support
  url: https://help.opera.com/en/
- type: SignUp
  url: https://admanager.opera.com/
- type: Pricing
  url: https://www.opera.com/ads
- type: TermsOfService
  url: https://www.opera.com/legal/terms
- type: PrivacyPolicy
  url: https://www.opera.com/privacy
- type: Website
  url: https://opera.com/
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 12
  pass: local-v1

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