Cron Job Doctor MCP

Cron Job Doctor MCP

Diagnoses scheduled GitHub Actions workflows for anomalies like stuck jobs, retry storms, duration creep, or recent failures.

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Cron Job Doctor MCP

A remote MCP server that diagnoses scheduled GitHub Actions workflows: finds jobs that have gone silently stuck, are retrying in a loop, are taking progressively longer to run, or just failed on their last run.

Tools exposed:

  • list_scheduled_workflows — find every workflow in a repo with a schedule: trigger
  • get_workflow_runs — raw run history for one workflow
  • diagnose_workflow — run history + anomaly flags (stuck / retry storm / duration creep / recent failure)

1. Prerequisites

  • A GitHub account with at least one repo that has a scheduled workflow
  • A fine-grained Personal Access Token scoped to the repo(s) you want to check, with read-only access to:
    • Actions
    • Contents
    • Metadata
  • A Vercel account

2. Push to GitHub

git init
git add .
git commit -m "Initial commit"
git remote add origin git@github.com:<you>/cron-job-doctor-mcp.git
git push -u origin main

3. Import into Vercel

  1. Go to vercel.com/new → Import Git Repository → select this repo (install the Vercel GitHub App first if you haven't already)
  2. In Environment Variables, add GITHUB_TOKEN with your PAT
  3. Click Deploy

Every future git push to main auto-deploys.

4. Connect it to Claude / Cowork

Add a custom connector pointing at:

https://<your-vercel-domain>/api/mcp

Then try something like: "Check my repo me/my-project for any cron jobs that need attention."

Local development

npm install
cp .env.example .env.local   # fill in GITHUB_TOKEN
npm run dev

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