Verified65% confidenceFactExact time
Starting in 2023, Google mandatorily enforced the Manifest V3 (MV3) specification, changing the webRequest API from blocking mode to declarative mode and requiring extensions to request permissions at installation time.
3
Sources
65%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
UnverifiedGoogle began promoting the Manifest V3 standard in 2018 and mandated it starting in 2023; MV3 limits the maximum number of dynamic rules to 30,000.81% similarUnverifiedStarting in 2024, Google mandated that all Chrome extensions migrate to the Manifest V3 architecture, which imposes stricter restrictions on persistent background operation and network requests.80% similarUnverifiedThe WebMCP proposal is currently led by Google and is in the Origin Trial stage, and has not yet become a formal W3C standard.76% similarUnverifiedStarting with Chrome Manifest V3, Google made major adjustments to the extension permission model, requiring stricter permission declarations and content security policies.75% similarUnverifiedGoogle unilaterally pushed forward and then rolled back the Manifest V3 extension API changes, affecting the entire browser extension ecosystem that depends on Chromium.74% similar
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