Extend your platform via custom code with Deno Subhosting
Hey all, Andy from the Deno team here. We're excited to share with you Deno Subhosting, an easy way to extend your platforms functionality by securely running untrusted JavaScript written by your users. When we first launched Deno Deploy in 2021, we were surprised at the volume of requests from companies about getting access to the APIs needed to run Deno Deploy. Many companies wanted to give their users the ability to write custom logic in their app, but setting this up in the cloud presents security concerns and a ton of infra work/maintenance. We realized that there was an…
Extend your platform via custom code with Deno Subhosting launched on November 14, 2023 with 37 votes, #1,188 of 4,332 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Deno Subhosting is a service that allows platform developers to safely run custom JavaScript code written by their users in the cloud. It handles the infrastructure and security concerns that come with executing untrusted user code, eliminating the need for companies to build and maintain their own systems. Designed for SaaS and platform companies, it lets users extend application functionality through custom logic without exposing the host system to security risks.
written from the facts on this page · September 2026
From the sources
Extend your platform using Deno Deploy
Built with SaaS scale and security in mind, Subhosting is easily configurable for any use case, using an SDK and a simple API. It’s the same infrastructure that powers Deno Deploy, now available for your product. Subhosting is designed to integrate frictionlessly into your platform, while remaining completely invisible to your users. Subhosting runs standards-compliant JavaScript and TypeScript, and is fully compatible with npm; no proprietary language to learn or vendorfrom deno.com
In the maker’s words, at launch
Hey all, Andy from the Deno team here. We're excited to share with you Deno Subhosting, an easy way to extend your platforms functionality by securely running untrusted JavaScript written by your users. When we first launched Deno Deploy in 2021, we were surprised at the volume of requests from companies about…
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