Rules for AI agents, hotter wholesale prices and a tech sell-off

Google Play lets people run Android apps they made with Google AI Studio without publishing them in the Play Store. These personal apps are visible only to the person who made them, must still follow Play's policies, and are available first to U.S. users aged 18 and up. Google says sharing with a trusted group of friends comes in the coming months.

Figma announced Specs, an editor where a team writes down its design rules so people and agents can follow them, and a central place for design libraries, code libraries and guidelines that agents can consult. Its code layers, which add code to designs for working prototypes, moved from private beta to public beta, and Figma says it now supports more than 20 new tools through MCP, a standard way for AI tools to connect to other software.

YouTube Music announced labels on the player page that show whether a song is "Fully Gen AI", "Partly Gen AI" or "No Gen AI", covering both the writing and the vocals, and the labels will extend to the main YouTube app. Tools like Auto-Tune count as no AI, and AI involvement alone does not stop a track from earning money.

The producer price index, which tracks what businesses are paid for goods and services, rose 6.3% in September from a year earlier, against a forecast of 5.5% and the largest 12-month rise since December 2022. Month over month it rose 1.3%, against a 0.6% estimate. It came a day after a hotter-than-expected consumer price report.

The cloud computing company CoreWeave fell 15.5% on Wednesday on fears that tech companies are borrowing too much for the AI build-out, and yields on its bonds jumped; its CEO wrote in a memo that its backlog more than supports its debt. On Thursday South Korea's Kospi closed down 7.57%, with SK Hynix down more than 11% and Samsung Electronics down nearly 10%, and CoreWeave was down another 6% in premarket trading.

The International Energy Agency said in its October oil report that diesel supply will remain tight into the latter half of 2027. Global diesel exports fell by 700,000 barrels a day from a year earlier last month, as a loss of 1.3 million barrels a day from Russia and the Middle East was only partly made up elsewhere. U.S. crude was up 4% for the week, above $95 a barrel.