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. The SpringServe UI API publishes a real, anonymously reachable OpenAPI 3.1.2 contract in two concurrent versions (v0, 289 operations; v1, 379 operations) from the Swagger UI at https://api.springserve.com/api-docs, with the callable base at https://console.springserve.com. The Magnite Streaming and Seller Platform reference material on help.magnite.com remains gated behind an authenticated partner login. In Q1 2026 Magnite reported $164.4M revenue with CTV crossing 51% of contribution ex-TAC for the first time.
Magnite publishes 77 APIs on the APIs.io network, including Account Partner Segments API, Accounts API, Advertiser Domain Lists API, and 74 more. Tagged areas include Advertising, Programmatic Advertising, Sell-Side Platform, SSP, and Connected TV.
Magnite’s developer surface includes authentication, documentation, engineering blog, API reference, getting-started guide, support, pricing, and 56 more developer resources.
Kin Score
APIs 77
Individual APIs this provider publishes, each with its own machine-readable definition.
Magnite Account Partner Segments API
The Account Partner Segments API from Magnite — 3 operation(s) for account partner segments.
Magnite Accounts API
The Accounts API from Magnite — 23 operation(s) for accounts.
Magnite Advertiser Domain Lists API
The Advertiser Domain Lists API from Magnite — 9 operation(s) for advertiser domain lists.
Magnite App Bundle Lists API
The App Bundle Lists API from Magnite — 20 operation(s) for app bundle lists.
Magnite App Name Lists API
The App Name Lists API from Magnite — 21 operation(s) for app name lists.
Magnite Audiences API
The Audiences API from Magnite — 1 operation(s) for audiences.
Magnite Audios API
The Audios API from Magnite — 2 operation(s) for audios.
Magnite Auth API
Endpoints that provide authentication for the API
Magnite Bid Maps API
The Bid Maps API from Magnite — 2 operation(s) for bid maps.
Magnite Bills API
The Bills API from Magnite — 8 operation(s) for bills.
Magnite Campaigns API
The Campaigns API from Magnite — 2 operation(s) for campaigns.
Magnite Changelogs API
The Changelogs API from Magnite — 6 operation(s) for changelogs.
Magnite City Lists API
The City Lists API from Magnite — 6 operation(s) for city lists.
Magnite Connected Demand API
The Connected Demand API from Magnite — 3 operation(s) for connected demand.
Magnite Connected Supply API
The Connected Supply API from Magnite — 3 operation(s) for connected supply.
Magnite Content Categories API
The Content Categories API from Magnite — 1 operation(s) for content categories.
Magnite Country Lists API
The Country Lists API from Magnite — 6 operation(s) for country lists.
Magnite Creatives API
The Creatives API from Magnite — 6 operation(s) for creatives.
Magnite Creatives Audio API
The Creatives Audio API from Magnite — 2 operation(s) for creatives audio.
Magnite Creatives Filepaths API
The Creatives Filepaths API from Magnite — 2 operation(s) for creatives filepaths.
Magnite Creatives Tag API
The Creatives Tag API from Magnite — 2 operation(s) for creatives tag.
Magnite Creatives Tile API
The Creatives Tile API from Magnite — 2 operation(s) for creatives tile.
Magnite Creatives Video API
The Creatives Video API from Magnite — 2 operation(s) for creatives video.
Magnite Curated Marketplaces API
The Curated Marketplaces API from Magnite — 5 operation(s) for curated marketplaces.
Magnite Currencies API
The Currencies API from Magnite — 1 operation(s) for currencies.
Magnite Dashboards API
The Dashboards API from Magnite — 27 operation(s) for dashboards.
Magnite Deal Id Lists API
The Deal Id Lists API from Magnite — 9 operation(s) for deal id lists.
Magnite Deal Lists API
The Deal Lists API from Magnite — 15 operation(s) for deal lists.
Magnite Demand Labels API
The Demand Labels API from Magnite — 6 operation(s) for demand labels.
Magnite Demand Partners API
The Demand Partners API from Magnite — 2 operation(s) for demand partners.
Magnite Demand Tags API
The Demand Tags API from Magnite — 17 operation(s) for demand tags.
Magnite Direct Connection Clearing Terms API
The Direct Connection Clearing Terms API from Magnite — 2 operation(s) for direct connection clearing terms.
Magnite Direct Connections API
The Direct Connections API from Magnite — 2 operation(s) for direct connections.
Magnite Domain Lists API
The Domain Lists API from Magnite — 26 operation(s) for domain lists.
Magnite First Party Partner Segments API
The First Party Partner Segments API from Magnite — 2 operation(s) for first party partner segments.
Magnite Forecast API
The Forecast API from Magnite — 1 operation(s) for forecast.
Magnite Geo Lists API
The Geo Lists API from Magnite — 4 operation(s) for geo lists.
Magnite Global Fcap Pixels API
The Global Fcap Pixels API from Magnite — 6 operation(s) for global fcap pixels.
Magnite Hb Bid Maps API
The Hb Bid Maps API from Magnite — 6 operation(s) for hb bid maps.
Magnite Header Bidding Platforms API
The Header Bidding Platforms API from Magnite — 2 operation(s) for header bidding platforms.
Magnite Ip Lists API
The Ip Lists API from Magnite — 9 operation(s) for ip lists.
Magnite ISP Lists API
The ISP Lists API from Magnite — 11 operation(s) for isp lists.
Magnite Keys API
The Keys API from Magnite — 4 operation(s) for keys.
Magnite Magnite Programmatic API
The Magnite Programmatic API from Magnite — 1 operation(s) for magnite programmatic.
Magnite Metro Area Lists API
The Metro Area Lists API from Magnite — 6 operation(s) for metro area lists.
Magnite Notifications API
The Notifications API from Magnite — 7 operation(s) for notifications.
Magnite Operative API
The Operative API from Magnite — 2 operation(s) for operative.
Magnite Parameter Lists API
The Parameter Lists API from Magnite — 9 operation(s) for parameter lists.
Magnite Partner Segments API
The Partner Segments API from Magnite — 10 operation(s) for partner segments.
Magnite Permissions API
The Permissions API from Magnite — 2 operation(s) for permissions.
Magnite Postal Code Lists API
The Postal Code Lists API from Magnite — 6 operation(s) for postal code lists.
Magnite Publisher Id Lists API
The Publisher Id Lists API from Magnite — 9 operation(s) for publisher id lists.
Magnite Report API
The Report API from Magnite — 2 operation(s) for report.
Magnite Report Templates API
The Report Templates API from Magnite — 3 operation(s) for report templates.
Magnite Reports API
The Reports API from Magnite — 4 operation(s) for reports.
Magnite Run As API
The Run As API from Magnite — 4 operation(s) for run as.
Magnite Scanned Creative Lists API
The Scanned Creative Lists API from Magnite — 11 operation(s) for scanned creative lists.
Magnite Scheduled Reports API
The Scheduled Reports API from Magnite — 3 operation(s) for scheduled reports.
Magnite Search API
The Search API from Magnite — 14 operation(s) for search.
Magnite Segments API
The Segments API from Magnite — 9 operation(s) for segments.
Magnite Session API
The Session API from Magnite — 1 operation(s) for session.
Magnite State Lists API
The State Lists API from Magnite — 6 operation(s) for state lists.
Magnite Supply Labels API
The Supply Labels API from Magnite — 6 operation(s) for supply labels.
Magnite Supply Name Lists API
The Supply Name Lists API from Magnite — 11 operation(s) for supply name lists.
Magnite Supply Partners API
The Supply Partners API from Magnite — 2 operation(s) for supply partners.
Magnite Supply Routers API
The Supply Routers API from Magnite — 3 operation(s) for supply routers.
Magnite Supply Tags API
The Supply Tags API from Magnite — 9 operation(s) for supply tags.
Magnite System Settings API
The System Settings API from Magnite — 2 operation(s) for system settings.
Magnite Tag Creatives API
The Tag Creatives API from Magnite — 2 operation(s) for tag creatives.
Magnite Tiles API
The Tiles API from Magnite — 2 operation(s) for tiles.
Magnite Timezones API
The Timezones API from Magnite — 1 operation(s) for timezones.
Magnite User Accounts API
The entity that combines a User and an Account and defines the role the user plays on that account
Magnite Users API
The Users API from Magnite — 6 operation(s) for users.
Magnite Value Lists API
The Value Lists API from Magnite — 2 operation(s) for value lists.
Magnite Vendors API
The Vendors API from Magnite — 2 operation(s) for vendors.
Magnite Videos API
The Videos API from Magnite — 2 operation(s) for videos.
Magnite White Labels API
The White Labels API from Magnite — 1 operation(s) for white labels.
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Open Collections 2
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
SpringServe UI API (V0)
OPEN COLLECTIONSpringServe UI API
OPEN COLLECTIONPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Magnite Rate Limits
RATE LIMITSSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 5
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Build 9
SDKs, sample code, and the tooling you integrate with
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Access & Security 4
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 8
The organization behind the API
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Other 15
Properties that don't map to a standard resource type
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Source (apis.yml)
Work with this as data
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