Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 1 Solid coverage with minor gaps

BidMachine OpenRTB Auction APIOpenRTB 2.5 bid endpoint for in-house bidders and supply partners integrating through the BidMachine SDK: o...55.8

Developing 5 Usable, with meaningful gaps to close

Magnite Exchange API (xAPI) OpenRTB ExtensionsMagnite's Exchange API (xAPI) protobuf extensions to the IAB OpenRTB 2.x protobuf definitions, published in...50.5 Agentic RTB Framework gRPCThe Agentic Real-Time Framework (ARTF) 1.0 defines gRPC extension points an exchange calls during an auctio...50.1 OpenRTB 2.x ProtocolOpenRTB is the real-time bidding protocol between ad exchanges and bidders. IAB Tech Lab publishes the 2.x ...50.1 GumGum Prebid Header Bidding EndpointGumGum's real-time bidding endpoint for header bidding, integrated through the open-source Prebid.js gumgum...42.1 TripleLift Exchange (TLX) APIReal-time bidding API implementing OpenRTB 2.x and Native Ads 1.2 specifications for demand partners to par...40.9

Thin 1 Limited public surface area

POKKT DSP OpenRTB APIDemand-side bidding endpoint. Exchanges POST an OpenRTB bid request object as application/json to /api/rtb/...36.7

Emerging 2 Early or largely undocumented

tvScientific Campaign Management APIThe REST API behind the tvScientific Campaign Management UI, named by tvScientific's own status page as the...22.3 Sync API PlatformThe Sync API bidder platform provides enterprise-grade APIs for the in-app advertising ecosystem. The platf...12.4

Companies reaching this through an API (4)

These companies publish an API, specification or operation carrying “Real-Time Bidding” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

BidMachine GumGum Magnite Pokkt

Score breakdown

Frequency

36.1

log-scaled weighted occurrences

Breadth

0.3

spread across providers

Quality lift

36.5

mean composite of providers using it

Cohesion

0.0

strength of nearest seed neighbor

Where this tag sits

AdTech broader

Where this tag comes from

Provider tag12

Api tag9

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Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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This tag

curl "https://apis.io/api/v1/tags/real-time-bidding"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/real-time-bidding"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/real-time-bidding/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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Real-Time Bidding

Providers using this tag (12)

APIs with this tag (9)