cloudflare/workers-sdk miniflare@4.20260529.0 on GitHub

Minor Changes

#13955 a2ef1a3 Thanks @G4brym! - Add support for the new web_search binding kind.
Cloudflare Web Search is a managed, zero-setup web discovery primitive for agents and Workers. Declare the binding as a single object in wrangler.jsonc:
```
{
	"web_search": { "binding": "WEBSEARCH" },
}
```
There is exactly one shared web corpus, so there is no namespace, instance, or other field to specify -- only the variable name. The binding exposes a single search() method that returns URLs and catalog metadata for a query. Web Search is discovery-only -- to read a result's content the caller invokes the global fetch() API against the result's url.
The binding is always remote in local development: Miniflare proxies to the production Web Search service via the remote-bindings transport. Adds the websearch.run OAuth scope to wrangler login.
Also adds a wrangler websearch search command for running ad-hoc queries from the CLI:
```
npx wrangler websearch search "cloudflare workers"
npx wrangler websearch search "cloudflare workers" --limit 5
npx wrangler websearch search "cloudflare workers" --json
```
--limit is optional (defaults to 10, capped at 20). --json prints the raw response; without it the results render as a pretty table.
#13610 cbb39bd Thanks @petebacondarwin! - Add support for agent_memory bindings
Agent Memory bindings allow Workers to connect to Cloudflare's Agent Memory service for storing and retrieving agent conversation state. This binding is remote-only, meaning it always connects to the Cloudflare API during wrangler dev rather than using a local simulation.
To configure an agent_memory binding, add the following to your wrangler.json:
```
{
	"agent_memory": [
		{
			"binding": "MY_MEMORY",
			"namespace": "my-namespace",
		},
	],
}
```
Wrangler will automatically provision the namespace during deployment if it does not already exist. Type generation via wrangler types is also supported.
This change also adds the agent-memory:write OAuth scope to Wrangler's default login scopes, so wrangler login can request the permissions needed to provision and manage Agent Memory namespaces.
#13860 c8c7ec0 Thanks @oliy! - Rename pipeline field to stream in pipeline bindings configuration
The pipeline field inside pipelines bindings has been renamed to stream to align with the updated API wire format. The old pipeline field is still accepted but deprecated and will emit a warning.
Before:
```
// wrangler.json
{
	"pipelines": [
		{
			"binding": "MY_PIPELINE",
			"pipeline": "my-stream-name",
		},
	],
}
```
After:
```
// wrangler.json
{
	"pipelines": [
		{
			"binding": "MY_PIPELINE",
			"stream": "my-stream-name",
		},
	],
}
```
#14079 972d13d Thanks @edmundhung! - Add JSON output to /cdn-cgi/handler/scheduled
The /cdn-cgi/handler/scheduled endpoint now accepts ?format=json to return the scheduled handler result as JSON, including whether the handler called controller.noRetry(). Requests without format=json still return the existing text outcome for backward compatibility.

Patch Changes

#14106 7bb5c7a Thanks @dario-piotrowicz! - Add timeout to browser-rendering browser launch to prevent infinite hangs
The browser-rendering plugin's launchBrowser() function now passes a 5-minute timeout to waitForLineOutput() when waiting for Chrome to print its DevTools WebSocket URL. Previously, if Chrome failed to start or crashed before printing the URL, the promise would hang forever. This could cause CI pipelines and local dev sessions to get stuck indefinitely.
#14062 ce4eb20 Thanks @dario-piotrowicz! - Update dependencies of "miniflare", "wrangler"
The following dependency versions have been updated:

Dependency From To

workerd 1.20260526.1 1.20260527.1
#14076 97d7d81 Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"
The following dependency versions have been updated:

Dependency From To

workerd 1.20260527.1 1.20260528.1
#14100 c647ccc Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"
The following dependency versions have been updated:

Dependency From To

workerd 1.20260528.1 1.20260529.1
#13968 0ce88ea Thanks @danieltroger! - Fix wrangler dev crash under Yarn PnP when the worker emits a structured log or the inspector forwards a stack trace.
getFreshSourceMapSupport was unconditionally indexing require.cache, but when miniflare is imported from ESM under Yarn PnP, Node's ESM->CJS bridge (loadCJSModule in node:internal/modules/esm/translators) hands the wrapped CJS module a re-invented require that only carries .resolve and .main, with no .cache. Fall back to createRequire(__filename) in that case so the fresh-load cache-swap keeps working.