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Head to head

Substrate Browser vs SeleniumBase MCP

Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.

Substrate Browserio.github.manuelinuxkr/substrate-browser
A
No reviews yet

Token-first headless browser for AIs. Extracts a tiny semantic graph, cutting HTML bloat by 95%.

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SeleniumBase MCPio.github.seleniumbase/seleniumbase
A
No reviews yet

Stealthy browser automation, testing, and web-scraping via CDP Mode.

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The short version

Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. Both score close on the safety scan (92 and 86 out of 100). SeleniumBase MCP has noticeably more public adoption.

 Substrate BrowserSeleniumBase MCP
User ratingNo reviews yetNo reviews yet
Safety gradeA92/100A86/100
AdoptionGrowingWidely used
GitHub stars113k
Downloads / week32314k
Runs whereYour machine (local)Your machine (local)
Gateway-readyNoNo
Tools1024
Write actions1
Price per callFreeFree
LicenceMITMIT
Last release2026-09-012026-09-18
CategoryScraping and browsingScraping and browsing

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