Add Chromium Control Canvas extension by AndreaGriffiths11 · Pull Request #1994 · github/awesome-copilot

AndreaGriffiths11 · 2026-06-14T16:43:52Z

Summary

Add the Chromium Control Canvas extension under extensions/chromium-control-canvas
Include the canvas control UI, extension metadata, package metadata, and README installation notes

Validation

node --check extensions/chromium-control-canvas/extension.mjs
npm run build
npm run skill:validate
npm run website:data

github-actions

⚠️ This PR targets main, but PRs should target staged.

The main branch is auto-published from staged and should not receive direct PRs.
Please close this PR and re-open it against the staged branch.

You can change the base branch using the Edit button at the top of this PR,
or run: gh pr edit 1994 --base staged

github-actions · 2026-06-14T16:44:15Z

🔴 Contributor Reputation Check: HIGH risk

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github-actions

✅ Base branch is now set correctly.

Removing the prior block because this PR no longer targets main.

github-actions · 2026-06-14T17:51:27Z

🔴 Contributor Reputation Check: HIGH risk

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github-actions · 2026-06-14T17:51:32Z

🔴 Contributor Reputation Check: HIGH risk

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github-actions · 2026-06-14T18:04:08Z

🔴 Contributor Reputation Check: HIGH risk

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github-actions · 2026-06-14T18:09:40Z

🔴 Contributor Reputation Check: HIGH risk

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github-actions · 2026-06-14T18:16:29Z

🔴 Contributor Reputation Check: HIGH risk

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Copilot

Pull request overview

Adds a new Copilot Canvas extension (chromium-control-canvas) that launches/attaches to a real headful Chromium instance via Playwright, exposing a small control-strip UI in the canvas panel and agent-callable actions for navigation, inspection, and interaction.

Changes:

Introduces a new extension runtime (extension.mjs) that manages Chromium lifecycle, a loopback control server, and agent actions (navigate/snapshot/click/type/screenshot).
Adds the panel UI (index.html) and installation documentation (README.md) for using the extension.
Adds extension/package metadata (copilot-extension.json, package.json, package-lock.json) including Playwright dependency.

Show a summary per file

File	Description
extensions/chromium-control-canvas/README.md	Documents purpose, install steps, prerequisites, and supported agent actions.
extensions/chromium-control-canvas/package.json	Declares extension package metadata and dependencies.
extensions/chromium-control-canvas/package-lock.json	Locks dependency graph for the extension.
extensions/chromium-control-canvas/index.html	Implements the canvas panel control-strip UI and preview behavior.
extensions/chromium-control-canvas/extension.mjs	Implements Chromium/Playwright control plane, loopback HTTP server, and canvas actions.
extensions/chromium-control-canvas/copilot-extension.json	Declares extension identity metadata for the host.

Copilot's findings

Files not reviewed (1)

extensions/chromium-control-canvas/package-lock.json: Generated file

Files reviewed: 5/6 changed files
Comments generated: 6

aaronpowell

There are some high-risk warnings from the code review - can you review them and determine if anything needs addressing

github-actions · 2026-06-15T15:41:19Z

🔴 Contributor Reputation Check: HIGH risk

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Maintainers: please review this contributor before merging.
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Copilot

Copilot's findings

Files not reviewed (1)

extensions/chromium-control-canvas/package-lock.json: Generated file

Files reviewed: 5/6 changed files
Comments generated: 4

+Chromium binary from inside that folder:
+
+```sh
+cd ~/.copilot/extensions/chromium-control-canvas


github-actions · 2026-06-15T15:55:51Z

🔴 Contributor Reputation Check: HIGH risk

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Copilot

Copilot's findings

Files not reviewed (1)

extensions/chromium-control-canvas/package-lock.json: Generated file

Files reviewed: 5/6 changed files
Comments generated: 2

+	const entry = { instanceId, context, browser, page, mode };
+	await navigate(page, input?.url || "about:blank").catch(() => {});
+	const { server, url } = await startServer(entry);


+			const bytes = await readFile(join(ARTIFACTS_DIR, name));
+			res.writeHead(200, { "Content-Type": "image/png", "Cache-Control": "no-store" });
+			res.end(bytes);


Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

github-actions · 2026-06-15T19:39:10Z

🔴 Contributor Reputation Check: HIGH risk

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github-actions Bot added the targets-main PR targets main instead of staged label Jun 14, 2026

github-actions Bot requested changes Jun 14, 2026

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GitHub Advanced Security started work on behalf of AndreaGriffiths11 June 14, 2026 16:44 View session

github-actions Bot added the needs-review:HIGH Contributor reputation check flagged HIGH risk label Jun 14, 2026

github-advanced-security AI found potential problems Jun 14, 2026

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Comment thread extensions/chromium-control-canvas/extension.mjs Dismissed

GitHub Advanced Security finished work on behalf of AndreaGriffiths11 June 14, 2026 16:47

AndreaGriffiths11 changed the base branch from main to staged June 14, 2026 17:51

github-actions Bot added branched-main PR appears to include plugin files materialized from main external-plugin PR updates plugins/external.json and removed targets-main PR targets main instead of staged labels Jun 14, 2026

github-actions Bot previously approved these changes Jun 14, 2026

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AndreaGriffiths11 dismissed github-actions[bot]’s stale review via dbcb140 June 14, 2026 18:03

AndreaGriffiths11 force-pushed the contrib/chromium-control-canvas branch from 2e8fad6 to dbcb140 Compare June 14, 2026 18:03

github-actions Bot removed branched-main PR appears to include plugin files materialized from main external-plugin PR updates plugins/external.json labels Jun 14, 2026

AndreaGriffiths11 force-pushed the contrib/chromium-control-canvas branch from dbcb140 to ba9d245 Compare June 14, 2026 18:09

AndreaGriffiths11 marked this pull request as ready for review June 14, 2026 18:16

Copilot AI review requested due to automatic review settings June 14, 2026 18:16

AndreaGriffiths11 requested a review from aaronpowell as a code owner June 14, 2026 18:16

Copilot started reviewing on behalf of AndreaGriffiths11 June 14, 2026 18:16 View session

Copilot AI reviewed Jun 14, 2026

View reviewed changes

aaronpowell reviewed Jun 15, 2026

View reviewed changes

AndreaGriffiths11 force-pushed the contrib/chromium-control-canvas branch from ba9d245 to 55e8dd8 Compare June 15, 2026 15:40

AndreaGriffiths11 requested a review from Copilot June 15, 2026 15:43

Copilot started reviewing on behalf of AndreaGriffiths11 June 15, 2026 15:44 View session

Copilot AI reviewed Jun 15, 2026

View reviewed changes

AndreaGriffiths11 force-pushed the contrib/chromium-control-canvas branch from 55e8dd8 to f0b6ecf Compare June 15, 2026 15:55

AndreaGriffiths11 requested a review from Copilot June 15, 2026 19:31

Copilot started reviewing on behalf of AndreaGriffiths11 June 15, 2026 19:31 View session

Copilot AI reviewed Jun 15, 2026

View reviewed changes

Add Chromium Control Canvas extension

6fac8df

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

AndreaGriffiths11 force-pushed the contrib/chromium-control-canvas branch from f0b6ecf to 6fac8df Compare June 15, 2026 19:38

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AndreaGriffiths11 commented Jun 14, 2026 •

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