75b3da5290
- pnpm 12.18.0 (docker/images/Dockerfile.media-processor) - pnpm 12.18.0 (docker/images/Dockerfile.mcp) - pnpm 12.18.0 (docker/images/Dockerfile.exporter) - pnpm 12.18.0 (docker/devenv/Dockerfile) - pnpm 12.18.0 (render-wasm/package.json) - pnpm 12.18.0 (plugins/package.json) - pnpm 12.18.0 (plugins/libs/plugins-styles/package.json) - pnpm 12.18.0 (plugins/libs/plugins-runtime/package.json) - pnpm 12.18.0 (plugins/libs/plugin-types/package.json) - pnpm 12.18.0 (plugins/apps/table-plugin/package.json) - pnpm 12.18.0 (plugins/apps/rename-layers-plugin/package.json) - pnpm 12.18.0 (plugins/apps/poc-tokens-plugin/package.json) - pnpm 12.18.0 (plugins/apps/poc-state-plugin/package.json) - pnpm 12.18.0 (plugins/apps/plugin-api-test-suite/package.json) - pnpm 12.18.0 (plugins/apps/lorem-ipsum-plugin/package.json) - pnpm 12.18.0 (plugins/apps/icons-plugin/package.json) - pnpm 12.18.0 (plugins/apps/example-styles/package.json) - pnpm 12.18.0 (plugins/apps/e2e/package.json) - pnpm 12.18.0 (plugins/apps/create-palette-plugin/package.json) - pnpm 12.18.0 (plugins/apps/contrast-plugin/package.json) - pnpm 12.18.0 (plugins/apps/composable-test-suite/package.json) - pnpm 12.18.0 (plugins/apps/colors-to-tokens-plugin/package.json) - pnpm 12.18.0 (package.json) - pnpm 12.18.0 (media-processor/package.json) - pnpm 12.18.0 (mcp/packages/server/package.json) - pnpm 12.18.0 (mcp/packages/plugin/package.json) - pnpm 12.18.0 (mcp/packages/common/package.json) - pnpm 12.18.0 (mcp/packages/browser-extension/package.json) - pnpm 12.18.0 (mcp/package.json) - pnpm 12.18.0 (library/package.json) - pnpm 12.18.0 (frontend/text-editor/package.json) - pnpm 12.18.0 (frontend/packages/ui/package.json) - pnpm 12.18.0 (frontend/packages/mousetrap/package.json) - pnpm 12.18.0 (frontend/packages/draft-js/package.json) - pnpm 12.18.0 (frontend/package.json) - pnpm 12.18.0 (exporter/package.json) - pnpm 12.18.0 (docs/package.json) - pnpm 12.18.0 (common/package.json) - pnpm 12.18.0 (backend/package.json) Signed-off-by: penpot-renovate[bot] <338182062+penpot-renovate[bot]@users.noreply.github.com>
Penpot MCP
A Chrome and Firefox extension that keeps the browser from discarding Penpot tabs connected to MCP. A discarded tab reloads when the user returns to it, and loses its MCP session.
How it works
- The content script asks the Penpot page for its MCP session. The page answers with the session ID and connection status.
- The background (a service worker in Chrome, an event page in Firefox) maps each session to
its tab and marks the tab as not discardable (
autoDiscardable: false) until the session ends.
The popup lists the connected tabs.
The icon is the Penpot logo; public/icons/icon.svg is its source. To redraw the PNGs after
changing it:
for size in 16 32 48 128; do
rsvg-convert -w $size -h $size public/icons/icon.svg -o public/icons/icon-$size.png
done
Frozen tabs
Chrome can also freeze a background page, which then cannot run the MCP plugin. The extension does not handle this: the Penpot page holds a shared Web Lock while its MCP connection is requested, and Chrome does not freeze a page holding one. Firefox does not freeze background pages.
Build and load
From mcp/:
pnpm install
pnpm --filter mcp-common run build
pnpm --filter mcp-browser-extension run build
The build writes one extension per browser, in dist/chrome and dist/firefox.
- Chrome: open
chrome://extensions, turn on developer mode, choose "Load unpacked" and pickmcp/packages/browser-extension/dist/chrome. - Firefox (140 or later): open
about:debugging#/runtime/this-firefox, choose "Load Temporary Add-on…" and pickmcp/packages/browser-extension/dist/firefox/manifest.json. Firefox removes temporary add-ons when it closes.
Reload Penpot tabs opened before the extension was loaded, so the content script runs in them.
The content script runs on https://design.penpot.app, on the test environments under
https://*.penpot.dev and on localhost at any port.