Sentry Integration

const express = require('express');
const crypto = require('crypto');
const app = express();
app.use(express.json({
  verify: (req, _res, buf) => { req.rawBody = buf; },
}));

function verifySignature(req) {
  const signature = req.headers['sentry-hook-signature'];
  if (!signature) return false;
  const expected = crypto
    .createHmac('sha256', process.env.SENTRY_CLIENT_SECRET)
    .update(req.rawBody)
    .digest('hex');
  if (signature.length !== expected.length) return false;
  return crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(expected));
}

app.post('/sentry-webhook', async (req, res) => {
  if (!verifySignature(req)) return res.status(401).send('Bad signature');

  const event = req.body.data?.event;
  if (!event) return res.sendStatus(200);

  const orgId = process.env.DEVIN_ORG_ID;
  const response = await fetch(
    `https://api.devin.ai/v3/organizations/${orgId}/sessions`, {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.DEVIN_API_KEY}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      prompt: [
        `A Sentry alert fired for a new issue: "${event.title}"`,
        `Culprit: ${event.culprit}`,
        `Sentry URL: ${event.web_url}`,
        ``,
        `Use the Sentry MCP to pull the full stack trace and breadcrumbs.`,
        `Identify the root cause, fix the issue, and open a PR with a`,
        `regression test.`,
      ].join('\n'),
      tags: ['sentry-auto-triage', `project:${event.project}`],
    }),
  });

  const { session_id } = await response.json();
  console.log(`Started Devin session ${session_id} for: ${event.title}`);
  res.sendStatus(200);
});

app.listen(3000);

Use the Sentry MCP to pull all unresolved errors from the past
24 hours in the payments-api project, sorted by event count.
Skip errors tagged `wontfix` or `expected-behavior`.

For the top 5 errors:
1. Pull the full stack trace and breadcrumbs
2. Find the relevant source files in our repo
3. Identify the root cause
4. Start a Devin session to open a PR with a fix and a regression
   test, linking the Sentry issue URL in the PR description

Post a summary of all errors and their PRs to Slack.