Know when Claude Code breaks — before you upgrade

#!/usr/bin/env bash
set -euo pipefail
HOOK="$SLACK_WEBHOOK_URL"

msg=$(curl -s https://claudeissues.com/signals.json | jq -r '
  .releaseImpact[]
  | select(.partial == false and .ratio > 1.3)
  | ":rotating_light: *\(.tag)* drew \(.after) reports in the 7 days after release "
    + "(baseline \(.baseline)) — <https://claudeissues.com/version/\(.tag)|see them>"' | head -3)

[ -z "$msg" ] && exit 0
curl -s -X POST "$HOOK" -H 'Content-Type: application/json' \
  -d "$(jq -n --arg t "$msg" '{text: $t}')"

const res = await fetch('https://claudeissues.com/rss/releases.xml');
const xml = await res.text();

const items = [...xml.matchAll(/<item>([\s\S]*?)<\/item>/g)].map(([, block]) => {
  const pick = (tag) => block.match(new RegExp(`<${tag}>([\\s\\S]*?)<\\/${tag}>`))?.[1] ?? '';
  const desc = pick('description');
  return {
    title: pick('title'),
    link: pick('link'),
    published: new Date(pick('pubDate')),
    // Descriptions are HTML-escaped; the count sits in "attributed ...: <strong>N</strong>".
    reports: Number(desc.match(/attributed to this version so far: [^0-9]*([0-9,]+)/)?.[1]?.replace(/,/g, '') ?? 0),
  };
});

console.log(items.slice(0, 5));

import urllib.request, json

with urllib.request.urlopen("https://claudeissues.com/signals.json") as r:
    sig = json.load(r)

# Bail out if our refresh job is behind — stale data looks like a quiet week.
if sig["freshness"]["staleDays"] > 2:
    raise SystemExit(f"data is {sig['freshness']['staleDays']} days stale, not alerting")

for rel in sig["releaseImpact"]:
    if rel["partial"]:          # window still elapsing — never alert on these
        continue
    if rel["ratio"] > 1.3:
        print(f"{rel['tag']}: {rel['after']} reports in 7d, baseline {rel['baseline']}")

for day in sig["anomalies"]:
    print(f"spike {day['date']}: {day['created']} filed, {day['z']}σ above baseline")

name: Check Claude Code release health
on:
  schedule: [{ cron: '0 9 * * *' }]
  workflow_dispatch:

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Flag releases drawing elevated report volume
        run: |
          curl -s https://claudeissues.com/signals.json > signals.json
          stale=$(jq -r '.freshness.staleDays' signals.json)
          if [ "$stale" -gt 2 ]; then echo "upstream data stale ($stale d), skipping"; exit 0; fi
          jq -e '[.releaseImpact[] | select(.partial == false and .ratio > 1.3)] | length == 0' \
            signals.json > /dev/null || {
              echo "::warning::a recent release is drawing elevated issue volume"
              jq -r '.releaseImpact[] | select(.partial == false and .ratio > 1.3)
                     | "\(.tag): \(.after) reports in 7d (baseline \(.baseline))"' signals.json
            }