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Public story · 2026-08-25 · high
Version 1.8.0 adds queryable heap snapshots and makes pageId required by default on page tools.
Why now: The release went up August 25.
Chrome DevTools MCP added a queryable heap snapshot tool in version 1.8.0, released August 25, per chrome-devtools-mcp's release notes. A companion get_heapsnapshot_summary tool reports how much memory a given context keeps alive. Heap edges now carry self and retained sizes too.
Memory leak hunting has always meant a person staring at a heap snapshot, clicking through retainer trees by hand. A queryable snapshot lets an agent ask what's retaining a context directly and iterate on the answer. An agent already runs that same loop against a failing test.
The release bundles smaller changes too. list_console_messages can return stack traces now. upload_file accepts multiple files in one call. A new flag skips the stable-DOM wait on evaluate_script, useful for pages that never fully settle. The release also adds tooling aimed at PWA automation.
One breaking change: pageId is now required by default on page-scoped tools. Anything built against the old optional-pageId behavior needs an update before upgrading to 1.8.0.
The release notes don't say which PWA workflows the new automation tooling covers.
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