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marketplace.visualstudio.com
In short: Getting listed on VS Code Marketplace is free, with optional paid upgrades. Plan for about 10 minutes — it is a form plus links and assets you already have.
What they ask for: Publish dev utility extension linking your tool docs.
Publish dev utility extension linking your tool docs.
Only if real VS Code extension exists.
Open the submission page on marketplace.visualstudio.com and complete its form — that is the "Open submit page" link at the top of this page.
Only if real VS Code extension exists.
Priority sets the band — this one is later. Cost (free + paid tier) and effort (quick) move it within that band, which puts it in the long tail tier. The score orders a submission queue. It is not a measure of the site’s domain authority, traffic or quality.