# VAST and VMAP Schemas

**Canonical:** https://apis.io/apis/iab-tech-lab/vast/  
**Provider:** IAB Tech Lab — https://apis.io/providers/iab-tech-lab/  
**Documentation:** https://iabtechlab.com/standards/vast/

VAST and VMAP Schemas is one of 9 APIs that [IAB Tech Lab](https://apis.io/providers/iab-tech-lab/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Video Ads and XML. The published artifact set on APIs.io includes API documentation.

Video Ad Serving Template (VAST) is the XML contract between video players and ad servers; VMAP (Video Multiple Ad Playlist) schedules ad breaks around content. IAB Tech Lab publishes XML Schema definitions for VAST 4.1, 4.2 and 4.4 and VMAP 1.0 in its GitHub repositories (the vast_4.3.xsd file in the repository is empty upstream).

## Machine-readable artifacts (5)

- **Documentation** — https://github.com/InteractiveAdvertisingBureau/VAST
- **XMLSchema** — https://raw.githubusercontent.com/api-evangelist/iab-tech-lab/refs/heads/main/xsd/iab-tech-lab-vast-4.4.xsd
- **XMLSchema** — https://raw.githubusercontent.com/api-evangelist/iab-tech-lab/refs/heads/main/xsd/iab-tech-lab-vast-4.2.xsd
- **XMLSchema** — https://raw.githubusercontent.com/api-evangelist/iab-tech-lab/refs/heads/main/xsd/iab-tech-lab-vast-4.1.xsd
- **XMLSchema** — https://raw.githubusercontent.com/api-evangelist/iab-tech-lab/refs/heads/main/xsd/iab-tech-lab-vmap-1.0.xsd

## Other IAB Tech Lab APIs (8)

- [OpenDirect API](https://apis.io/apis/iab-tech-lab/opendirect-api/)
- [IAB Agentic Advertising API](https://apis.io/apis/iab-tech-lab/agentic-advertising-api/)
- [Seller Agent API](https://apis.io/apis/iab-tech-lab/seller-agent-api/)
- [Buyer Agent API](https://apis.io/apis/iab-tech-lab/buyer-agent-api/)
- [OpenRTB 2.x Protocol](https://apis.io/apis/iab-tech-lab/openrtb/)
- [AdCOM Protobuf](https://apis.io/apis/iab-tech-lab/adcom/)
- [Agentic RTB Framework gRPC](https://apis.io/apis/iab-tech-lab/agentic-rtb-framework/)
- [Supply Chain API](https://apis.io/apis/iab-tech-lab/supply-chain-api/)

## Tags

Video Ads, XML

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