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cloudflare · Cloudflare Workers Docs

Workers mTLS

Configures a Cloudflare Worker to present a client certificate to external services by uploading certificates via Wrangler and creating an mTLS certificate binding in the project configuration.

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Derived skill

Files assembled from official documentation

Viewing SKILL.md

Workers mTLS

Configures a Cloudflare Worker to present a client certificate to external services by uploading certificates via Wrangler and creating an mTLS certificate binding in the project configuration.

When To Use

Use when you need to authenticate a Worker to a service that requires mutual TLS by presenting a client certificate during the TLS handshake.

Reference Files

FileContainsUse For
SKILL.mdEntry point: scope, routing table, and workflow.Start here.
docs/workers-runtime-apis-bindings-mtls-workflow-guide.mdDocumentation explaining how to implement mutual TLS authentication using Cloudflare Workers runtime API bindings.Questions about documentation explaining how to implement mutual TLS authentication using Cloudflare Workers runtime API bindings.
examples/workers-runtime-apis-bindings-mtls-cloudflare-workers-mtls-certificate-u.textA wrangler cli command for uploading a client certificate and private key to Cloudflare Workers mTLS.Exact payloads, commands, or snippets shown in A wrangler cli command for uploading a client certificate and private key to Cloudflare Workers mTLS.
examples/workers-runtime-apis-bindings-mtls-cloudflare-workers-mtls-configuration.textA text configuration example demonstrating the mtlscertificates binding structure for Cloudflare Workers.Exact payloads, commands, or snippets shown in A text configuration example demonstrating the mtlscertificates binding structure for Cloudflare Workers.
examples/workers-runtime-apis-bindings-mtls-cloudflare-workers-mtls-binding-confi.textA configuration snippet demonstrating how to define the mtls_certificates binding in a wrangler.toml file.Exact payloads, commands, or snippets shown in A configuration snippet demonstrating how to define the mtlscertificates binding in a wrangler.toml file.
examples/workers-runtime-apis-bindings-mtls-cloudflare-workers-mtls-fetch.textA JavaScript code snippet demonstrating how to use a client certificate binding to perform a secure fetch request in a Cloudflare Worker.Exact payloads, commands, or snippets shown in A JavaScript code snippet demonstrating how to use a client certificate binding to perform a secure fetch request in...
examples/workers-runtime-apis-bindings-mtls-cloudflare-workers-mtls-environment-i.textA TypeScript interface definition demonstrating how to declare a Fetcher binding for mTLS in a Cloudflare Workers environment.Exact payloads, commands, or snippets shown in A TypeScript interface definition demonstrating how to declare a Fetcher binding for mTLS in a Cloudflare Workers env...

What This Skill Covers

  • When using HTTPS ↗, a server presents a certificate for the client to authenticate in order to prove their identity. For even tighter security, some services...
  • Main sections: Interface.

Workflow

  1. Open the most relevant file under docs/ for the exact documented workflow and wording.
  2. Open schemas/ files for exact structured contracts.
  3. Open examples/ files for concrete requests, commands, snippets, and manifests.
  4. Do not add behavior or configuration that is not present in the attached source files.

Canonical source: https://developers.cloudflare.com/workers/runtime-apis/bindings/mtls