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Using KV in Node.js
This page covers connecting to a Deno KV database hosted on Deno Deploy Classic (dash.deno.com). Deploy Classic will be shut down on July 20, 2026 — see the migration guide for details.
On the new Deno Deploy platform, KV databases are
provisioned per app through the
Databases feature and accessed from
your app code via
Deno.openKv() without a
connection URL — see
Deno KV on Deno Deploy. External KV
Connect access to new‑Deploy KV databases is not currently exposed.
Connecting from Node.js to a Deno KV database hosted on Deno Deploy Classic is
supported via our
official client library on npm. You
can find usage instructions for this option below. The same library can also
connect to any other endpoint implementing the open
KV Connect
protocol, such as a self‑hosted denokv
instance.
Installation and usage Jump to heading
Use your preferred npm client to install the client library for Node.js using one of the commands below.
npm install @deno/kv
pnpm add @deno/kv
yarn add @deno/kv
Once you've added the package to your Node project, you can import the openKv
function (supports both ESM import and CJS require-based usage):
import { openKv } from "@deno/kv";
// Connect to a KV instance
const kv = await openKv("<KV Connect URL>");
// Write some data
await kv.set(["users", "alice"], { name: "Alice" });
// Read it back
const result = await kv.get(["users", "alice"]);
console.log(result.value); // { name: "Alice" }
By default, the access token used for authentication comes from the
DENO_KV_ACCESS_TOKEN environment variable. You can also pass it explicitly:
import { openKv } from "@deno/kv";
const kv = await openKv("<KV Connect URL>", { accessToken: myToken });
Once your Deno KV client is initialized, the same API available in Deno may be used in Node as well.
KV Connect URLs Jump to heading
Connecting to a KV database outside of Deno requires a
KV Connect
URL. A KV Connect URL for a database hosted on Deno Deploy Classic will be in
this format: https://api.deno.com/databases/<database-id>/connect.
The database-id for your project can be found in the
Deno Deploy Classic dashboard, under your project's
"KV" tab.
More information Jump to heading
More information about how to use the Deno KV module for Node can be found on the project's README page.