The State of Paid Media APIs — The Sell Side

About this report

The least programmable area in marketing on every measure taken here. Supply-side platforms, ad exchanges, ad servers and monetisation tooling. The sell side runs the same real-time auctions as the buy side and discloses less about them than any other corner of go-to-market software.

104 companies. Kin Score median 34.0, Agent Readiness median 26.6. 4 reach the Exemplar band; 43 sit in Emerging or Minimal. Every one of them is named and ranked in the report — if you work in this market, you are in the table, and so is everyone you compete with.

The lowest scores in either cohort, and the clearest single finding in this research: the side of the transaction with no customer demanding transparency did not build any.

What's inside

1. Executive summary
2. The state of the market
3. The market's own dividing line
4. The resource taxonomy — what this market actually exposes
5. The vocabulary, as functions
6. Glossary
7. The composite Kin Score — and why it is the foundation
8. Agent readiness — a separate instrument
9. The blueprint — what the leaders satisfy and nobody else does
10. Who this market depends on — and whether they publish
11. The standards layer
12. The regulatory layer
13. Artifacts for the agentic turn — and the workflow gap
14. Security, authentication and scopes
15. Provider-by-provider intelligence, and the whole market ranked
16. The investable thesis
17. Coverage and method
18. The climb — what moves a company here
19. Where this is going

What you get for $500.00