Remote Development

Void normally uses local D1, KV, and R2 through Miniflare. Remote mode lets you run local code against a project deployed to your Void platform, for example to test with existing data or investigate an issue.

Calls such as db.select() and env.KV.get() use the deployed resources without changing your application code. Writes affect real data, so use a staging project when possible.

Prerequisites

Before enabling remote mode, you need:

1. Connect to your team's platform with void connect <url>. It signs you in when needed.
2. Link a project with void project link. Deploy it at least once so its resources exist.

Enabling Remote Mode

In void.config.ts (persistent)

{
  "remote": true
}

Via environment variable (one-off)

VOID_REMOTE=1 vite dev

VOID_REMOTE=0 disables remote mode even if void.config.ts has "remote": true.

Supported Bindings

Binding	Local (default)	Remote
D1	Local SQLite via Miniflare	Remote D1 database
KV	Local file-backed KV	Remote KV namespace
R2	Local file-backed R2	Remote R2 bucket
AI	Always proxied	Always proxied

AI requests use your platform’s account and allowance in both local and remote mode. There is no local AI simulator.

Checking Remote Mode

When the dev server starts with remote mode active, it prints:

[void] Remote bindings active
         DB      → remote D1
         KV      → remote KV
         STORAGE → remote R2

Limitations

• Network latency: each binding call makes a network request, so responses may be slower than local development.
• R2 multipart uploads: createMultipartUpload() and resumeMultipartUpload() are not supported in remote mode.
• R2 range and conditional reads: in remote mode, get() ignores request headers passed as range or onlyIf and returns the whole object. For example, get(key, { range: request.headers, onlyIf: request.headers }) returns the whole object when the request has a Range or If-None-Match header. get() throws when range or onlyIf is an object that asks for a byte range or a condition, such as { offset: 0, length: 100 } or { etagMatches: etag }.
• R2 conditional writes: put(..., { onlyIf }) requires an updated platform and project deployment. Failed preconditions return null.
• R2 metadata and list options: custom metadata, HTTP metadata, and list() with delimiter, startAfter, or include require an updated project deployment. Without one, list() with these options and put() with metadata other than contentType throw an error.
• D1 dump: db.dump() is not supported in remote mode.
• D1 batches: db.batch() requires an updated platform and project deployment.