PR Risk Score

Automatically assess the risk of pull requests by combining impact, regression, security, and coupling analysis.

Requirements

Plan: Cloud Team or higher
API Key: With write scope

How It Works

PR Risk Score analyzes four dimensions of risk:

Dimension	Weight	What It Measures
Impact	30%	Blast radius of changes across the codebase
Regression	25%	Likelihood of breaking existing functionality
Security	25%	Security implications of the changes
Coupling	20%	Cross-module dependencies affected

Risk Ratings

Score	Rating	Meaning
0-30	Low	Safe to merge with standard review
31-60	Medium	Requires careful review
61-80	High	Needs senior review and testing
81-100	Critical	Block merge until risks addressed

GitHub Actions Setup

Add this workflow to your repository:

Copy the workflow file from your Massu dashboard or download it from https://massu.ai/massu-risk-score-action.yml

Save it as .github/workflows/massu-risk-score.yml

Add your API key as a repository secret:

- Go to Settings > Secrets > Actions - Add MASSU_API_KEY with your API key (must have write scope)

Pull requests will now automatically receive risk score comments.

API Usage

Submit a PR for risk scoring directly via the API:

bash

curl -X POST https://massu.ai/api/v1/risk \
  -H "Authorization: Bearer ms_live_XXXXXXXX_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "repo": "org/repo",
    "pr_number": 42,
    "pr_title": "Add user authentication",
    "files_changed": 15,
    "impact_data": { "score": 65 },
    "regression_data": { "score": 40 },
    "security_data": { "score": 80 },
    "coupling_data": { "score": 30 }
  }'

Dashboard

View risk scores for all your PRs at Dashboard > PR Risk Scores, including:

Average risk score across PRs
High-risk PR count
Score breakdown visualization
Trend analysis