Google updated Chrome Web Store rules to prohibit extensions that facilitate or enable real-money transactions on predictive outcomes, adding prediction markets to the platform’s regulated-go
Google updated Chrome Web Store rules to prohibit extensions that facilitate or enable real-money transactions on predictive outcomes, adding prediction markets to the platform’s regulated-goods restrictions.
Enforcement begins on August 1, 2026. Chrome extensions that let users place, route, support or otherwise enable real-money prediction-market trades can face Chrome Web Store action after that date.
The change targets browser-based tools rather than prediction markets themselves. Extensions that connect users to real-money event-contract trading, automate transaction flows, support trading interfaces or help users execute market activity around predictive outcomes now sit inside the prohibited-products category.
The rule lands during a sharp expansion in prediction-market activity across politics, sports, crypto, macro events and cultural markets. Polymarket and Kalshi have become the sector’s most visible platforms, with product growth running alongside regulatory fights over gambling law, market integrity and user-access controls.
Chrome extensions have become part of crypto’s trading layer because they can sit between wallets, websites, automation tools, alerts, account dashboards and transaction flows. A prediction-market extension can support pricing checks, wallet activity, trading prompts or execution routes without being the primary exchange.
That distribution layer now faces a clearer line inside Google’s browser ecosystem. Real-money prediction-market functionality is barred even if the extension itself is not the venue that lists the contract.
The policy change arrives as Polymarket continues expanding product access. The platform recently added instant Bitcoin deposits through Lightning and Spark, giving users a faster funding route alongside its existing crypto rails.
Polymarket also denied a mandatory KYC shift for its main platform, limiting identity checks to a selected beta group for Polymarket Perps while keeping its core site separate from the new test product.
Google’s Chrome Web Store update also tightens user-data requirements. Extension data collection must be strictly necessary to the extension’s disclosed single purpose, and collection for other purposes is prohibited.
Developers must prominently disclose all data collection, even when the data is closely related to the extension’s core function. Extensions must also notify users if data-handling practices change after installation.
The same policy update adds a separate ban on extensions designed to bypass safety guardrails, usage restrictions or protective measures used by AI-powered services. That gives Google a wider enforcement base across prediction markets, user-data collection and AI-service abuse inside Chrome’s extension ecosystem.
The prediction-market restriction comes as Congress keeps examining platform controls. House Oversight asked Kalshi and Polymarket for documents covering KYC, access controls and suspicious-trading safeguards after concerns over non-public information, government-event markets and user identity controls moved into Washington.
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