Overview Version History Q & A Rating & Review
Koalr — Deployment Risk for VS Code
See your PR's deployment risk score directly in the VS Code status bar — without leaving your editor.
What it does
When you're on a branch with an open pull request, Koalr shows a live risk score (0–100) in the status bar:
🟢 Low risk (0–49) — green check
🟡 Medium risk (50–74) — yellow warning
🔴 High risk (75–100) — red error background
Click the status bar item to see the top risk factors for your PR.
Setup
Install the extension
Open the Command Palette (Cmd+Shift+P) and run Koalr: Set API Key
Enter your API key from app.koalr.com/settings/api-keys
Open any workspace on a branch with an open PR — the risk score appears automatically
How risk is calculated
Koalr scores each PR using 36 research-validated signals across four categories:
Code signals
Test coverage delta on modified files
File churn rate (frequently modified files carry elevated baseline risk)
PR size and changeset complexity
Number of distinct modules touched
Process signals
CODEOWNERS compliance — did the right team review?
Review thoroughness — time to review, number of reviewers
Author experience on modified files
Concurrent PR merges to production
Infrastructure signals
Service failure history and recent rollbacks
Deploy timing risk (Friday deploys, late night, holidays)
CI pass rate trends
IaC change detection (hard gate)
Collaboration signals
Collaboration centrality score
Missing required reviewer assignments
Commands
Command
Description
Koalr: Check PR RiskManually fetch and display risk for current branch
Koalr: Set API KeyStore your Koalr API key securely
Configuration
Setting
Default
Description
koalr.apiUrlhttps://api.koalr.comAPI base URL (machine-scoped)
Requirements
A Koalr account (free plan available)
An API key from Settings → API Keys
A workspace open on a branch with an open GitHub pull request
Git available in your PATH
Privacy
Koalr reads only your current git branch name to look up the associated pull request. No source code is read or transmitted. API keys are stored in VS Code's secure credential storage (keychain).
Links
