TLDR: LiveRamp has officially donated its User Context Protocol to the IAB Tech Lab, establishing an open standard for how artificial intelligence agents exchange critical advertising signals. This move, completed on November 3, 2025, aims to address the growing need for efficient and interoperable communication within agentic advertising systems, which are increasingly managing millions of decisions per second. The protocol utilizes compact, learned vector representations (embeddings) to facilitate real-time data exchange, moving beyond the limitations of traditional text-based prompts and proprietary formats.
LiveRamp, a prominent data collaboration platform company based in San Francisco, has made a significant contribution to the future of digital advertising by donating its User Context Protocol to the IAB Tech Lab. The donation, finalized on November 3, 2025, and publicly announced shortly thereafter, establishes an open standard designed to revolutionize how artificial intelligence agents communicate within advertising ecosystems. This initiative marks a pivotal shift from proprietary development to industry-wide governance, aiming to foster greater interoperability and efficiency in the rapidly evolving landscape of agentic advertising.
The User Context Protocol is engineered to define how intelligent agents in advertising systems exchange vital signals, including identity, contextual information, and reinforcement data. This exchange is facilitated through compact, learned vector representations known as embeddings. The necessity for such a protocol stems from the inherent limitations of existing advertising infrastructure when dealing with advanced AI systems. Traditional text-based prompts, for instance, are too slow and verbose for the sub-100 millisecond response times required in real-time bidding environments. Similarly, raw feature vectors often lack the semantic meaning necessary for seamless transfer across independently developed systems, while proprietary formats hinder interoperability among various buyer, seller, and measurement agents.
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Anthony Katsur, CEO of IAB Tech Lab, emphasized the importance of this donation, stating that the organization received the protocol as part of its Open Source Initiative. Katsur highlighted that ‘artificial intelligence is experiencing its first true exponential surge and that open, interoperable standards will transform that surge into enduring business value.’ The protocol is expected to enable autonomous buyer, seller, and measurement agents to communicate with unprecedented efficiency, capable of processing billions of signals per second in real-time advertising environments. This move is crucial as autonomous agents are beginning to manage millions of advertising decisions per second, necessitating a robust and standardized communication framework.
