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ChatGPT Ads expands self-service globally as targeting, measurement and campaign tooling deepen

ChatGPT Ads is moving from beta inventory toward a global performance-ad stack. OpenAI has expanded self-service buying and says optimized bidding is now the majority of campaigns, while new audience, measurement and workflow controls increase both scale and attribution complexity.

Mixpanel AI can now investigate why a product metric changed and return the result as a working Board

Product teams can launch a root-cause investigation from an Insights report, an alert or Mixpanel Agent instead of manually trying breakdown after breakdown. The result is operationally useful, but it remains an automated statistical diagnosis rather than proof of causation.

Google rebuilds its Ads API Developer Assistant as an agent plugin for live reporting and validation

Google has turned its Ads API helper into a reusable agent plugin rather than a standalone project. For developers maintaining ad-tech integrations, the material change is that agent workflows can now ground themselves in current Protobuf schemas and execute validated reporting against real Google Ads accounts instead of relying only on model memory.

WebMCP gives websites a structured tool layer for browser agents

WebMCP has crossed from a browser experiment into a usable agent integration: ChatGPT’s built-in browser now discovers site tools out of the box, while Chrome exposes the proposed standard through an origin trial. Builders can add structured actions to existing web apps, but the API and security model remain experimental.

GitHub Spark is shutting down August 31 — export code now and replace broken `llm()` calls

GitHub Spark stops being available to existing users on August 31, 2026. Deployed apps are meant to keep running, but owners should export code to a repository now; Spark apps using `llm()` need a separate inference provider because the underlying GitHub Models service retired July 30.