Sentry for Cloudflare Pages

Using Sentry with Cloudflare Pages makes debugging as painless as possible, so you can keep everything up and running.

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Getting Started is Simple

Add @sentry/cloudflare as a dependency:

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npm install --save @sentry/cloudflare

Configure the nodejs_compat compatibility flag in your wrangler.json:

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{
  "compatibility_flags": [
    "nodejs_compat"
  ],
  "compatibility_date": "2026-02-10"
}

Then add the Sentry middleware to your Cloudflare Pages functions:

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import * as Sentry from "@sentry/cloudflare";

export const onRequest = [
  // Make sure Sentry is the first middleware
  Sentry.sentryPagesPlugin((context) => ({
    dsn: 'https://<key>@sentry.io/<project>',
    tracesSampleRate: 1.0,
  })),
  // Add more middlewares here
];

Check our documentation for the latest instructions.

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Code-Level Visibility

View stack traces on issues, user-agent information, and all the metadata around an issue for all the context needed to resolve the issue.

Quickly Identify Function Latencies

Trace those ten-second page loads to poor-performing API calls and slow database queries. The event detail waterfall visually highlights what calls are giving your customers a poor experience.

Fill in the Gaps

See what happened leading up to the issue. Get function execution details including function metadata, execution time, Amazon Resource Name, and function identity.

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Learn from issues and release data to uncover trends and identify opportunities across your entire system .

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