An on-call error-triage canvas for GitHub Copilot: scans live Sentry issues, groups them by urgency, and hands issues off for tracking or a fix PR. Registers a reusable canvas extension under extensions/ with a matching plugins/sentry-triage manifest. The extension runs a loopback HTTP/SSE server per canvas instance (host-allow-listed, per-instance capability token never broadcast over SSE), renders the triage board server- and client-side, and drives model turns over a single shared Copilot session serialized so scan and work turns can't interleave. Work state is prototype-pollution-guarded against agent-controlled tracking keys, and sendAndWait timeouts are handled without duplicating external side effects. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Sentry Triage Canvas
A GitHub Copilot canvas for on-call error triage. It scans your live Sentry issues, groups them by why they need attention, and lets you hand a selected issue off to Copilot — either to file a tracking issue or to spin up a session that drafts a fix pull request.
Features
- Live scan of Sentry issues for an organization (optionally narrowed to a single project), grouped by urgency.
- Plain-English titles toggle that rewrites the raw Sentry error into a one-sentence, user-facing summary.
- Tracking detection so already-triaged issues (filed with the
sentry-triagelabel) are recognized on later scans. - 📝 Create issue files or reuses a tracking issue only — no code, branch, or PR.
- 🔧 Fix with Copilot files/reuses the tracking issue and spawns a dedicated session that drafts a fix PR.
- Settings panel to confirm the repository, local checkout, base branch, and issue tracker before anything is created.
Files
extension.mjs— canvas declaration, agent hand-off tools, and orchestration.server.mjs— loopback HTTP server that backs the canvas webview.state.mjs— per-canvas state and render coordination.styles.mjs— canvas styling.sentry.mjs/sentryClient.mjs— Sentry CLI (library mode) access: scan issues, list orgs and projects.preflight.mjs— Sentry sign-in / connection checks with the setup gate.prefs.mjs— persisted user preferences.escape.mjs— prompt/HTML escaping helpers.components/—page.mjs,card.mjs, andcategory.mjswebview components.assets/preview.png— preview image for the extensions gallery.package.json— ESM entry point and runtime dependencies.copilot-extension.json— Copilot extension name/version metadata.
Prerequisites
-
Node.js 22 or newer.
-
The GitHub Copilot app canvas / UI-extensions experiment enabled.
-
A Sentry sign-in. This canvas reads issues through the Sentry CLI in library mode — there is no MCP server to configure. Sign in once from your terminal:
sentry auth loginThis stores an OAuth credential the canvas auto-detects. For non-interactive environments, export a token instead:
export SENTRY_AUTH_TOKEN=<your-token>The login or token needs these scopes:
event:read,org:read,project:read. The canvas checks for a valid sign-in each time it opens; if you aren't signed in it shows a setup gate with the exact reason.
Install
Drop this folder at ~/.copilot/extensions/sentry-triage/ for user scope, or in
a repository at .github/extensions/sentry-triage/ for project scope. Then
install dependencies from inside the copied folder (this canvas depends on the
sentry npm package at runtime):
# User scope
cd ~/.copilot/extensions/sentry-triage
# Or project scope, from the repository root
cd .github/extensions/sentry-triage
npm install
Reload extensions in the GitHub Copilot app, then open the sentry-triage
canvas.
Open the canvas in the correct repository scope
Open the canvas from a Copilot session scoped to the repository where you want issues and draft pull requests created, so it can detect the repository, local checkout, and base branch automatically. If you opened it outside the intended repository, open Settings and confirm the targets before selecting Create issue or Fix with Copilot.
Use the canvas
- Open the canvas from the repository you want to work in.
- Confirm the Sentry organization (auto-detected from your sign-in). If your account has more than one org, pick it from the dropdown. Scan issues stays disabled until an organization is set.
- Optionally narrow to a single project using the autocomplete field. Leave it blank to scan the whole org.
- Review the issues grouped by why they need attention. Toggle Plain-English titles to swap the raw Sentry error for a readable summary.
- Select issues and choose an action in the toolbar — 📝 Create issue or 🔧 Fix with Copilot.
Agent tools
The canvas exposes structured hand-off tools the agent calls instead of printing
JSON into the timeline: submit_issue_summaries, submit_projects,
submit_tracking, submit_related, and submit_work_pr.
License
MIT — see LICENSE.