Deploy to Cloudflare Workers - Redop

Redop ships a first-class Cloudflare Workers adapter at @redopjs/redop/cloudflare.

Fit today

Item	Value
Recommended for built-in Bun `.listen()`	no — use the adapter
Recommended protocol	MCP `2026-07-28` (stateless)
`create-redop-app` preset	`--deploy cloudflare`
Generated files	`wrangler.jsonc`, adapter entry in `src/index.ts`
`afterResponse`	wired through `ctx.waitUntil`

Minimal worker

import { Redop, cloudflare } from "@redopjs/redop/cloudflare";

const app = new Redop({
  serverInfo: { name: "cf-mcp", version: "0.1.0" },
}).tool("ping", {
  handler: async () => ({ ok: true }),
});

export default cloudflare(app, { health: true });

Wrangler config

create-redop-app --deploy cloudflare writes a wrangler.jsonc like this:

{
  "$schema": "node_modules/wrangler/config-schema.json",
  "name": "my-cf-mcp",
  "main": "src/index.ts",
  "compatibility_date": "2026-08-07",
  "compatibility_flags": ["nodejs_compat"]
}

Field	Purpose
`main`	Worker entry — Redop’s `cloudflare(app)` default export
`compatibility_date`	Workers runtime feature set
`compatibility_flags`	`nodejs_compat` for Node-built-ins some MCP tooling expects

Local and production both use this file:

bunx wrangler dev
bunx wrangler deploy

Scaffold

bunx create-redop-app my-cf-mcp --transport http --deploy cloudflare
cd my-cf-mcp
bun install
bun run dev

The preset also sets "dev": "wrangler dev" and "deploy": "wrangler deploy" in package.json.

Capability notes

Prefer stateless MCP (2026-07-28). Avoid relying on in-memory sessions or long-lived SSE across isolates.
afterResponse / onAfterResponse are scheduled with ctx.waitUntil, so deferred work is not dropped when the response returns.
For always-on sessioned MCP + Inspector-style SSE, use Bun on Railway/Fly instead.

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