Show HN: Add functional custom buttons/panels to any site via prompts

1 point

4 months ago

Drop in (usedropin.com/blog/launch) is a Chrome extension that reads the current page DOM, lets you describe UI changes like "add button next to this header that creates HubSpot contact", then injects live React-like components into shadow DOM.

Persistence via Chrome storage + URL pattern matching. Integrations (HubSpot/Airtable/Notion/etc) to read/write data.

~80% reliable on LinkedIn/HubSpot/static pages. Breaks on heavy SPAs with aggressive CSP/dynamic portals.

Curious about: - Similar DOM parsing/pattern matching you've built - Security concerns with API keys in extension storage

Chrome store: https://chromewebstore.google.com/detail/eblmgjbdajiakodknfp...

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