# OpenSincera API

**Canonical:** https://apis.io/apis/trade-desk/trade-desk-opensincera-api/  
**Provider:** The Trade Desk — https://apis.io/providers/trade-desk/  
**Base URL:** https://open.sincera.io/api  
**Documentation:** https://partner.thetradedesk.com/v3/portal/opensincera/overview

OpenSincera API is one of 9 APIs that [The Trade Desk](https://apis.io/providers/trade-desk/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Advertising, Data Quality, Supply Path, and Transparency. The published artifact set on APIs.io includes API documentation.

OpenSincera (from the May 2024 Sincera acquisition) provides programmatic supply-side transparency data — ad slot quality, page attributes, viewability metadata, supply-path metrics — to help buyers value impressions and audit inventory.

## Machine-readable artifacts (1)

- **Documentation** — https://partner.thetradedesk.com/v3/portal/opensincera/overview

## Other The Trade Desk APIs (8)

- [The Trade Desk Platform API](https://apis.io/apis/trade-desk/trade-desk-platform-api/)
- [The Trade Desk Real-Time Conversion Events API](https://apis.io/apis/trade-desk/trade-desk-realtime-conversion-events-api/)
- [Unified ID 2.0 (UID2)](https://apis.io/apis/trade-desk/trade-desk-uid2-api/)
- [The Trade Desk Advertiser API](https://apis.io/apis/trade-desk/trade-desk-advertiser-api/)
- [The Trade Desk DeletionOptOut API](https://apis.io/apis/trade-desk/trade-desk-deletionoptout-api/)
- [The Trade Desk OfflineConversion API](https://apis.io/apis/trade-desk/trade-desk-offlineconversion-api/)
- [The Trade Desk ThirdParty API](https://apis.io/apis/trade-desk/trade-desk-thirdparty-api/)
- [The Trade Desk IPAddress Data API](https://apis.io/apis/trade-desk/trade-desk-ipaddress-api/)

## Tags

Advertising, Data Quality, Supply Path, Transparency

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/trade-desk/trade-desk-opensincera-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/trade-desk/.