Editor automation breaks on day two — robust Playwright adapters for ProseMirror

Content teams, CMS vendors, small publishers and SaaS companies building publishing workflows regularly face brittle editor automation: Playwright tests and browser scripts that work on day one often break on day two when a ProseMirror schema update or a DOM refactor shifts a selector. This problem scales across the estimated 1.5M content-producing teams in the $4.5B market for content automation and publishing workflows, costing developer time, blocking releases and increasing flakiness in CI pipelines. A practical product is a set of robust, schema-aware Playwright adapters for ProseMirror that expose model-level editing primitives, resilient selectors and mutation-aware replay logic, plus an SDK, CLI and CI integrations. Package this as an open core with a curated adapter registry and paid enterprise features (SLA, hosted runners, maintenance) so teams can drop in reliable automation without reengineering their editors. This is an attractive moment: ProseMirror has become a de facto editor primitive across many platforms, Playwright and serverless/browser runners are mature and affordable, and the market opportunity is large ($4.5B, 1.5M teams, ~$3,000 ACV), which is why the idea scores highly on market and revenue potential. Adoption acceleration from the creator-economy and standardization trends mean payoff for reusable adapters is higher now than it would have been five years ago. You can stand out by investing in deep ProseMirror-to-DOM mapping, a formal adapter API that handles schema variations and extensions, automated adapter tests and a community-maintained registry; offering model-level operations will make automation far less brittle than selector-only approaches. Be honest about the challenges: the long tail of custom schemas requires ongoing maintenance, and some large customers may still prefer in-house solutions, so a realistic go-to-market will combine open-source adoption with focused enterprise sales.