SkySignal APM for VS Code

Performance insights for Meteor applications, directly in your editor.

SkySignal APM surfaces real-time metrics, diagnostics, and optimization hints from your production Meteor app without leaving VS Code. See method latency, error rates, N+1 queries, observer leaks, and more — right where you write your code.

Features

Hover Tooltips

Hover over any Meteor.methods, Meteor.publish, Meteor.subscribe, or Mongo.Collection reference to see live performance data:

• Color-coded type badge (METHOD, PUBLICATION, COLLECTION, SUBSCRIPTION)
• Headline metrics: latency (avg/p95), error rate, call volume, observer counts
• Warning pills for critical issues (N+1 queries, COLLSCAN, observer leaks)
• Click View Details to open a rich detail panel

Code Lenses

Clickable annotations above method and publication definitions showing key metrics at a glance:

847 calls/24h | avg 142ms | 2.3% errors | 2 issues

Each metric (calls, latency, errors, issues) can be individually toggled in settings.

Sidebar Tree View

A dedicated activity bar panel organizes your application's performance data:

SKYSIGNAL (my-app)                       [refresh] [settings]
  Methods (24)
    orders.create           285ms   4.1%
    users.search             89ms   0.2%
    ...
  Publications (8)
    userData                 12 observers
    ...
  Collections (15)
  Errors (3 active groups)
  Code Health
    Deprecated APIs: 7 sync calls
    Vulnerabilities: 2 high
    Observer Leaks: 1 suspected

• Single-click navigates to the definition in your codebase
• Double-click opens a rich detail panel
• Sortable by name, latency, error rate, or call volume

Inline Diagnostics

Squiggly underlines and Problems panel entries for performance issues detected in production:

• High error rates or latency (configurable thresholds)
• N+1 query patterns
• COLLSCAN (missing index) warnings
• Observer leak suspects
• Deprecated sync API usage
• Missing field projections in publications
• npm vulnerability findings

Each diagnostic category can be individually enabled/disabled.

Detail Panels

Rich webview panels with charts and tables for deep-diving into specific methods, publications, collections, or errors:

Method Detail — latency time series chart, time breakdown (db/http/async/wait/compute), N+1 patterns, slow queries, recent errors with stack traces

Publication Detail — observer type distribution (changeStream/oplog/polling), over-fetching analysis, linked observer table with leak confidence scores

Collection Detail — index list with sizes, slow queries with explain hints, methods that read/write the collection

Error Detail — occurrence frequency chart, full stack trace with clickable file paths, triggering method context

Status Bar

A persistent status bar item shows connection status and data freshness:

SkySignal: 30s ago

Click to refresh. Shows a warning icon when data is stale or the connection is lost.

Requirements

• A SkySignal APM account with the @skysignal/agent package installed in your Meteor.js application
• SkySignal server running with REST API v2 enabled (v2.x+)
• VS Code 1.85.0 or later
• Meteor.js workspace (the extension activates when a .meteor/ directory is detected)

Getting Started

1. Install the extension from the VS Code Marketplace
2. Open your Meteor.js project in VS Code
3. Run SkySignal: Login from the Command Palette (Ctrl+Shift+P)
4. Enter your SkySignal server URL, email, and password
5. Select the site to monitor (or let auto-detection match it from your settings*.json)

The extension begins polling immediately. Hover over any Meteor construct to see live data.

Extension Settings

Connection

Data

Hovers

Code Lenses

Diagnostics

Sidebar

Commands

License

Proprietary. All rights reserved.