The Trade Desk
The Trade Desk is an independent, omnichannel demand-side platform (DSP) for programmatic advertising, headquartered in Ventura, California. Its cloud-based platform — Kokai (the current flagship, succeeding Solimar) — lets agencies, brands, and trading desks buy and optimize digital ad inventory across connected TV (CTV), audio, mobile, video, native, display, and digital out-of-home. The Trade Desk positions itself as the buy-side counterweight to the walled gardens by championing the open internet through OpenPath (direct publisher integrations that bypass SSPs) and Unified ID 2.0 (UID2), an open-source, deterministic identity framework governed by the IAB Tech Lab. The company also stewards EUID (UID2's European equivalent), the Galileo first-party data activation framework, and Koa — its in-platform AI used for forecasting, bidding optimization, and audience modeling. Programmatic developers integrate via the TTD Workflows API (REST + GraphQL for campaign, ad group, and creative management), the Data API (advertiser/third-party data ingestion, offline conversions, deletion/opt-out), the Real-Time Conversion Events API (RTCE), and the OpenSincera data-quality APIs (acquired May 2024). Official SDKs are published in Python, Go, and Java and are Speakeasy-generated from OpenAPI specs. Most documentation lives behind the Partner Portal (partner.thetradedesk.com) but a public docs surface is exposed at open.thetradedesk.com. The Trade Desk is publicly traded (NASDAQ: TTD).
APIs
The Trade Desk Data API
Ingest first-party advertiser audience data, third-party provider audience data, and offline conversions (CAPI-style), and submit data-subject deletion / opt-out requests across...
The Trade Desk Workflows API
The Workflows API exposes the high-level campaign, ad group, creative, and bulk-job operations that previously required navigating the legacy Platform API. It blends REST and Gr...
The Trade Desk Platform API
The original REST Platform API covering advertisers, campaigns, ad groups, creatives, targeting data, reporting, and audience operations. Documentation is gated behind the TTD P...
The Trade Desk Real-Time Conversion Events API
Server-side and client-side conversion event ingestion (Apache 2.0 Google Tag Manager templates) for capturing high-fidelity attribution signals in a cookie-deprecated environme...
Unified ID 2.0 (UID2)
Unified ID 2.0 is an open-source, deterministic identity framework seeded by The Trade Desk and now governed by the IAB Tech Lab. UID2 resolves hashed email addresses and phone ...
OpenSincera API
OpenSincera (from the May 2024 Sincera acquisition) provides programmatic supply-side transparency data — ad slot quality, page attributes, viewability metadata, supply-path met...
Collections
TTD Data API
OPENGraphQL
The Trade Desk GraphQL API
The Workflows API exposes the high-level campaign, ad group, creative, and bulk-job operations that previously required navigating the legacy Platform API. It blends REST and Gr...
GRAPHQL