Magnite

Magnite, Inc. (NASDAQ: MGNI) is the world's largest independent sell-side advertising platform, headquartered in New York with major operations in Los Angeles. Formed in 2020 from the merger of Rubicon Project and Telaria, and expanded through the acquisitions of SpotX (2021), SpringServe (2021), and Streamr.ai (2025), Magnite operates an omnichannel SSP spanning Connected TV (CTV), online video, display, audio, and mobile in-app. Its flagship offering is the Magnite Streaming platform — a next-generation CTV/OTT solution that unifies the SpringServe ad server with Magnite's Streaming SSP — alongside DV+ for display/video web and mobile, ClearLine for agency self-service direct buying of premium video, and Magnite Access for first- and third-party data activation. Magnite connects publishers including Disney Advertising, Paramount, Roku, Samsung, LG Ad Solutions, and Warner Bros. Discovery to virtually all major DSPs, and Jounce Media's March 2025 Supply Path Benchmarking Report verified Magnite reaches 99% of US streaming supply on a dollar-weighted basis. The company exposes developer surfaces through the SpringServe REST API, the Magnite Streaming Public API, the Magnite Seller Platform / CTV Platform Public APIs, an OpenRTB v2.5 bidder integration, and iOS/Android in-app SDKs. Most API reference material is gated behind authenticated partner accounts; no canonical OpenAPI document is publicly published. In Q1 2026 Magnite reported $164.4M revenue with CTV crossing 51% of contribution ex-TAC for the first time.

Magnite is profiled on the APIs.io network. Tagged areas include Advertising, Programmatic Advertising, Sell-Side Platform, SSP, and Connected TV.

Magnite’s developer surface includes documentation, engineering blog, GitHub presence, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

10.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

AdvertisingProgrammatic AdvertisingSell-Side PlatformSSPConnected TVCTVOTTStreamingDisplay AdvertisingVideo AdvertisingOpenRTBHeader BiddingAd TechPublisher MonetizationDemand-Side Integration

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 10.5/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 3.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.7 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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

GraphQL 1

GraphQL schemas published by this provider.

Get Started 1

Portal, sign-up, and the first successful call

SDKQuickStart

SDKQuickStart

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

SpringServeAPIDocs

SpringServeAPIDocs

GraphQL

GraphQL

Build 5

SDKs, sample code, and the tooling you integrate with

iOSSDK

AndroidSDK

PythonSDK

GitHub

SpringServeGitHub

SpringServeGitHub

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

HelpCenter

HelpCenter

Company 8

The organization behind the API

Website

AboutUs

Blog

Press

InvestorRelations

InvestorRelations

Careers

Careers

LinkedIn

Twitter

Twitter

Scroll for all 8

Other 12

Properties that don't map to a standard resource type

Sellers

Buyers

MagniteStreaming

SpringServe

ClearLine

DVPlus

StreamingPublicAPI

StreamingPublicAPI

SpringServeReportingAPI

SpringServeReportingAPI

PyPI

Glossary

NASDAQ

Wikipedia

Scroll for all 12

Source (apis.yml)

aid: magnite
name: Magnite
description: 'Magnite, Inc. (NASDAQ: MGNI) is the world''s largest independent sell-side advertising platform, headquartered
  in New York with major operations in Los Angeles. Formed in 2020 from the merger of Rubicon Project and Telaria, and expanded
  through the acquisitions of SpotX (2021), SpringServe (2021), and Streamr.ai (2025), Magnite operates an omnichannel SSP
  spanning Connected TV (CTV), online video, display, audio, and mobile in-app. Its flagship offering is the Magnite Streaming
  platform — a next-generation CTV/OTT solution that unifies the SpringServe ad server with Magnite''s Streaming SSP — alongside
  DV+ for display/video web and mobile, ClearLine for agency self-service direct buying of premium video, and Magnite Access
  for first- and third-party data activation. Magnite connects publishers including Disney Advertising, Paramount, Roku, Samsung,
  LG Ad Solutions, and Warner Bros. Discovery to virtually all major DSPs, and Jounce Media''s March 2025 Supply Path Benchmarking
  Report verified Magnite reaches 99% of US streaming supply on a dollar-weighted basis. The company exposes developer surfaces
  through the SpringServe REST API, the Magnite Streaming Public API, the Magnite Seller Platform / CTV Platform Public APIs,
  an OpenRTB v2.5 bidder integration, and iOS/Android in-app SDKs. Most API reference material is gated behind authenticated
  partner accounts; no canonical OpenAPI document is publicly published. In Q1 2026 Magnite reported $164.4M revenue with
  CTV crossing 51% of contribution ex-TAC for the first time.'
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/magnite.png
tags:
- Advertising
- Programmatic Advertising
- Sell-Side Platform
- SSP
- Connected TV
- CTV
- OTT
- Streaming
- Display Advertising
- Video Advertising
- OpenRTB
- Header Bidding
- Ad Tech
- Publisher Monetization
- Demand-Side Integration
url: https://raw.githubusercontent.com/api-evangelist/magnite/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.20'
apis: []
common:
- type: DomainSecurity
  url: security/magnite-domain-security.yml
- type: Website
  url: https://www.magnite.com
- type: AboutUs
  url: https://www.magnite.com/about-us/
- type: Sellers
  url: https://www.magnite.com/sellers/
- type: Buyers
  url: https://www.magnite.com/buyers/
- type: MagniteStreaming
  url: https://www.magnite.com/solutions/magnite-streaming/
- type: SpringServe
  url: https://www.springserve.com
- type: ClearLine
  url: https://www.magnite.com/solutions/clearline/
- type: DVPlus
  url: https://www.magnite.com/solutions/dv/
- type: HelpCenter
  url: https://help.magnite.com/help
- type: Documentation
  url: https://help.magnite.com/help/developer-documentation
- type: StreamingPublicAPI
  url: https://help.magnite.com/help/api-documentation-test
- type: SpringServeAPIDocs
  url: https://springserve.atlassian.net/wiki/spaces/SSD/pages/1573617663/API+-+Getting+Started
- type: SpringServeReportingAPI
  url: https://springserve.atlassian.net/wiki/spaces/SSD/pages/1588035603/Reporting+API
- type: SDKQuickStart
  url: https://help.magnite.com/help/sdk-quick-start-guide
- type: iOSSDK
  url: https://help.magnite.com/help/in-app-sdk-integration-guide-ios
- type: AndroidSDK
  url: https://help.magnite.com/help/in-app-sdk-integration-guide-android
- type: PythonSDK
  url: https://github.com/SpringServe/springserve-python
- type: PyPI
  url: https://pypi.org/project/springserve/
- type: Blog
  url: https://www.magnite.com/blog/
- type: Press
  url: https://www.magnite.com/press/
- type: Glossary
  url: https://www.magnite.com/glossary/
- type: InvestorRelations
  url: https://investor.magnite.com
- type: Careers
  url: https://www.magnite.com/careers/
- type: GitHub
  url: https://github.com/magnite
- type: SpringServeGitHub
  url: https://github.com/SpringServe
- type: LinkedIn
  url: https://www.linkedin.com/company/magnite
- type: Twitter
  url: https://twitter.com/magniteinc
- type: NASDAQ
  url: https://www.nasdaq.com/market-activity/stocks/mgni
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/Magnite_Inc
- url: graphql/magnite-graphql.md
  type: GraphQL
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com