diff --git a/.changeset/better-rooms-fold.md b/.changeset/better-rooms-fold.md
new file mode 100644
index 0000000000..d1490a8022
--- /dev/null
+++ b/.changeset/better-rooms-fold.md
@@ -0,0 +1,7 @@
+---
+"miniflare": minor
+---
+
+local explorer: serve the local explorer's OpenAPI spec at /cdn-cgi/explorer/api
+
+The local explorer is supported by a REST API served from the worker's local address. It can be accessed independently of the UI, (e.g. by an AI agent) and is thus documented at this endpoint.
diff --git a/packages/miniflare/scripts/filter-openapi.ts b/packages/miniflare/scripts/filter-openapi.ts
index d049fc26a0..15e7712c32 100644
--- a/packages/miniflare/scripts/filter-openapi.ts
+++ b/packages/miniflare/scripts/filter-openapi.ts
@@ -32,7 +32,7 @@ const DEFAULT_OUTPUT_PATH = join(
 const LOCAL_EXPLORER_INFO = {
 	title: "Local Explorer API",
 	description:
-		"Local subset of Cloudflare API for exploring resources during local development.",
+		"A local subset of the Cloudflare API for inspecting and modifying resource state during local development. Supports D1, R2, KV, Durable Objects and Workflows.",
 	version: "0.0.1",
 };
 
diff --git a/packages/miniflare/scripts/openapi-filter-config.ts b/packages/miniflare/scripts/openapi-filter-config.ts
index e8628e39e6..4edd2ce3fb 100644
--- a/packages/miniflare/scripts/openapi-filter-config.ts
+++ b/packages/miniflare/scripts/openapi-filter-config.ts
@@ -617,6 +617,640 @@ const config = {
 					tags: ["Local Explorer"],
 				},
 			},
+
+			// Workflows endpoints (local-only, not pulling from upstream API)
+			"/workflows": {
+				get: {
+					description:
+						"Returns the workflows configured for local development.",
+					operationId: "workflows-list-workflows",
+					parameters: [],
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														items: {
+															$ref: "#/components/schemas/workflows_workflow",
+														},
+														type: "array",
+													},
+													result_info: {
+														properties: {
+															count: {
+																type: "number",
+															},
+														},
+														type: "object",
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "List Workflows response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "List Workflows response failure.",
+						},
+					},
+					summary: "List Workflows",
+					tags: ["Workflows"],
+				},
+			},
+			"/workflows/{workflow_name}": {
+				get: {
+					description:
+						"Returns details of a specific workflow including instance status counts.",
+					operationId: "workflows-get-workflow-details",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+					],
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														$ref: "#/components/schemas/workflows_workflow-details",
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "Get Workflow Details response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "Get Workflow Details response failure.",
+						},
+					},
+					summary: "Get Workflow Details",
+					tags: ["Workflows"],
+				},
+				delete: {
+					description:
+						"Deletes all instances of a workflow by removing their persistence files.",
+					operationId: "workflows-delete-workflow",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+					],
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														type: "object",
+														properties: {
+															status: {
+																type: "string",
+															},
+															success: {
+																type: "boolean",
+															},
+														},
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "Delete Workflow response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "Delete Workflow response failure.",
+						},
+					},
+					summary: "Delete Workflow (all instances)",
+					tags: ["Workflows"],
+				},
+			},
+			"/workflows/{workflow_name}/instances": {
+				get: {
+					description: "Returns the instances of a workflow.",
+					operationId: "workflows-list-instances",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+						{
+							in: "query",
+							name: "page",
+							schema: {
+								default: 1,
+								description: "Page number (1-indexed).",
+								minimum: 1,
+								type: "number",
+							},
+						},
+						{
+							in: "query",
+							name: "per_page",
+							schema: {
+								default: 25,
+								description: "Number of instances per page.",
+								maximum: 100,
+								minimum: 1,
+								type: "number",
+							},
+						},
+						{
+							in: "query",
+							name: "status",
+							schema: {
+								type: "string",
+								enum: [
+									"queued",
+									"running",
+									"paused",
+									"errored",
+									"terminated",
+									"complete",
+									"waitingForPause",
+									"waiting",
+								],
+								description: "Filter instances by status.",
+							},
+						},
+					],
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														items: {
+															$ref: "#/components/schemas/workflows_instance",
+														},
+														type: "array",
+													},
+													result_info: {
+														properties: {
+															page: {
+																type: "number",
+															},
+															per_page: {
+																type: "number",
+															},
+															total_count: {
+																type: "number",
+															},
+															total_pages: {
+																type: "number",
+															},
+														},
+														type: "object",
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "List Workflow Instances response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "List Workflow Instances response failure.",
+						},
+					},
+					summary: "List Workflow Instances",
+					tags: ["Workflows"],
+				},
+				post: {
+					description: "Creates a new workflow instance.",
+					operationId: "workflows-create-instance",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+					],
+					requestBody: {
+						content: {
+							"application/json": {
+								schema: {
+									type: "object",
+									properties: {
+										id: {
+											type: "string",
+											description:
+												"Optional instance ID. If not provided, a UUID is generated.",
+										},
+										params: {
+											description:
+												"Optional JSON payload to pass to the workflow.",
+										},
+									},
+								},
+							},
+						},
+					},
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														type: "object",
+														properties: {
+															id: {
+																type: "string",
+																description:
+																	"The instance ID of the newly created workflow instance.",
+															},
+														},
+														required: ["id"],
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "Create Workflow Instance response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "Create Workflow Instance response failure.",
+						},
+					},
+					summary: "Create Workflow Instance",
+					tags: ["Workflows"],
+				},
+			},
+			"/workflows/{workflow_name}/instances/{instance_id}": {
+				get: {
+					description: "Returns the status details of a workflow instance.",
+					operationId: "workflows-get-instance-details",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+						{
+							in: "path",
+							name: "instance_id",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_instance-id",
+							},
+						},
+					],
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														$ref: "#/components/schemas/workflows_instance-details",
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "Get Workflow Instance Details response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "Get Workflow Instance Details response failure.",
+						},
+					},
+					summary: "Get Workflow Instance Details",
+					tags: ["Workflows"],
+				},
+				delete: {
+					description:
+						"Deletes a workflow instance by removing its persistence files.",
+					operationId: "workflows-delete-instance",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+						{
+							in: "path",
+							name: "instance_id",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_instance-id",
+							},
+						},
+					],
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														type: "object",
+														properties: {
+															success: {
+																type: "boolean",
+															},
+														},
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "Delete Workflow Instance response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "Delete Workflow Instance response failure.",
+						},
+					},
+					summary: "Delete Workflow Instance",
+					tags: ["Workflows"],
+				},
+			},
+			"/workflows/{workflow_name}/instances/{instance_id}/status": {
+				patch: {
+					description:
+						"Changes the status of a workflow instance (pause, resume, restart, terminate).",
+					operationId: "workflows-change-instance-status",
+					parameters: [
+						{
+							in: "path",
+							name: "workflow_name",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_workflow-name",
+							},
+						},
+						{
+							in: "path",
+							name: "instance_id",
+							required: true,
+							schema: {
+								$ref: "#/components/schemas/workflows_instance-id",
+							},
+						},
+					],
+					requestBody: {
+						required: true,
+						content: {
+							"application/json": {
+								schema: {
+									type: "object",
+									required: ["action"],
+									properties: {
+										action: {
+											type: "string",
+											enum: ["pause", "resume", "restart", "terminate"],
+											description:
+												"The action to perform on the workflow instance.",
+										},
+									},
+								},
+							},
+						},
+					},
+					responses: {
+						"200": {
+							content: {
+								"application/json": {
+									schema: {
+										allOf: [
+											{
+												$ref: "#/components/schemas/workers_api-response-common",
+											},
+											{
+												properties: {
+													result: {
+														type: "object",
+														properties: {
+															success: {
+																type: "boolean",
+															},
+														},
+													},
+												},
+												type: "object",
+											},
+										],
+									},
+								},
+							},
+							description: "Change Workflow Instance Status response.",
+						},
+						"4XX": {
+							content: {
+								"application/json": {
+									schema: {
+										$ref: "#/components/schemas/workers_api-response-common-failure",
+									},
+								},
+							},
+							description: "Change Workflow Instance Status response failure.",
+						},
+					},
+					summary: "Change Workflow Instance Status",
+					tags: ["Workflows"],
+				},
+			},
+			"/workflows/{workflow_name}/instances/{instance_id}/events/{event_type}":
+				{
+					post: {
+						description: "Sends an event to a workflow instance.",
+						operationId: "workflows-send-instance-event",
+						parameters: [
+							{
+								in: "path",
+								name: "workflow_name",
+								required: true,
+								schema: {
+									$ref: "#/components/schemas/workflows_workflow-name",
+								},
+							},
+							{
+								in: "path",
+								name: "instance_id",
+								required: true,
+								schema: {
+									$ref: "#/components/schemas/workflows_instance-id",
+								},
+							},
+							{
+								in: "path",
+								name: "event_type",
+								required: true,
+								schema: {
+									type: "string",
+									description: "The event type to send.",
+								},
+							},
+						],
+						requestBody: {
+							content: {
+								"application/json": {
+									schema: {
+										description: "Optional JSON payload for the event.",
+									},
+								},
+							},
+						},
+						responses: {
+							"200": {
+								content: {
+									"application/json": {
+										schema: {
+											$ref: "#/components/schemas/workers_api-response-common",
+										},
+									},
+								},
+								description: "Send Event response.",
+							},
+							"4XX": {
+								content: {
+									"application/json": {
+										schema: {
+											$ref: "#/components/schemas/workers_api-response-common-failure",
+										},
+									},
+								},
+								description: "Send Event response failure.",
+							},
+						},
+						summary: "Send Event to Workflow Instance",
+						tags: ["Workflows"],
+					},
+				},
 		},
 		schemas: {
 			// R2 schemas - matches stratus dashboard API shapes
@@ -827,6 +1461,133 @@ const config = {
 					},
 				},
 			},
+
+			// Workflows schemas (local-only, not pulling from upstream API)
+			"workflows_workflow-name": {
+				description: "The name of the workflow.",
+				example: "my-workflow",
+				type: "string",
+			},
+			"workflows_instance-id": {
+				description: "The unique identifier of a workflow instance.",
+				example: "my-instance-id",
+				type: "string",
+			},
+			workflows_workflow: {
+				type: "object",
+				properties: {
+					name: {
+						type: "string",
+						description: "The name of the workflow.",
+					},
+					class_name: {
+						type: "string",
+						description: "The entrypoint class name of the workflow.",
+					},
+					script_name: {
+						type: "string",
+						description: "The script name containing the workflow.",
+					},
+				},
+				required: ["name"],
+			},
+			"workflows_workflow-details": {
+				type: "object",
+				properties: {
+					name: {
+						type: "string",
+						description: "The name of the workflow.",
+					},
+					class_name: {
+						type: "string",
+						description: "The entrypoint class name.",
+					},
+					script_name: {
+						type: "string",
+						description: "The script containing the workflow.",
+					},
+					instances: {
+						type: "object",
+						description: "Instance counts by status.",
+						properties: {
+							complete: { type: "number" },
+							errored: { type: "number" },
+							paused: { type: "number" },
+							queued: { type: "number" },
+							running: { type: "number" },
+							terminated: { type: "number" },
+							waiting: { type: "number" },
+							waitingForPause: { type: "number" },
+						},
+					},
+				},
+				required: ["name", "class_name", "script_name", "instances"],
+			},
+			workflows_instance: {
+				type: "object",
+				properties: {
+					id: {
+						type: "string",
+						description: "The unique identifier of the workflow instance.",
+					},
+					status: {
+						type: "string",
+						enum: [
+							"queued",
+							"running",
+							"paused",
+							"errored",
+							"terminated",
+							"complete",
+							"waitingForPause",
+							"waiting",
+							"unknown",
+						],
+						description: "The current status of the instance.",
+					},
+					created_on: {
+						type: "string",
+						description: "ISO 8601 timestamp of when the instance was created.",
+					},
+				},
+				required: ["id"],
+			},
+			"workflows_instance-details": {
+				type: "object",
+				properties: {
+					id: {
+						type: "string",
+						description: "The unique identifier of the workflow instance.",
+					},
+					status: {
+						type: "string",
+						enum: [
+							"queued",
+							"running",
+							"paused",
+							"errored",
+							"terminated",
+							"complete",
+							"waitingForPause",
+							"waiting",
+							"unknown",
+						],
+						description: "The current status of the instance.",
+					},
+					output: {
+						description: "Output value if the workflow completed successfully.",
+					},
+					error: {
+						type: "object",
+						properties: {
+							name: { type: "string" },
+							message: { type: "string" },
+						},
+						description: "Error details if the workflow errored.",
+					},
+				},
+				required: ["id", "status"],
+			},
 		},
 	},
 } satisfies FilterConfig;
diff --git a/packages/miniflare/src/workers/local-explorer/explorer.worker.ts b/packages/miniflare/src/workers/local-explorer/explorer.worker.ts
index fe23288e9c..83acd048c8 100644
--- a/packages/miniflare/src/workers/local-explorer/explorer.worker.ts
+++ b/packages/miniflare/src/workers/local-explorer/explorer.worker.ts
@@ -18,6 +18,7 @@ import {
 	zWorkersKvNamespaceListNamespacesData,
 	zWorkflowsListInstancesData,
 } from "./generated/zod.gen";
+import openApiSpec from "./openapi.local.json";
 import { listD1Databases, rawD1Database } from "./resources/d1";
 import { listDONamespaces, listDOObjects, queryDOSqlite } from "./resources/do";
 import {
@@ -88,7 +89,8 @@ app.use("/api/*", async (c, next) => {
 			status: 204,
 			headers: {
 				"Access-Control-Allow-Origin": origin ?? "*",
-				"Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
+				"Access-Control-Allow-Methods":
+					"GET, POST, PUT, PATCH, DELETE, OPTIONS",
 				"Access-Control-Allow-Headers":
 					"Content-Type, cf-metadata-only, cf-r2-custom-metadata",
 				"Access-Control-Max-Age": "86400",
@@ -156,6 +158,12 @@ app.get("/*", async (c, next) => {
 	return c.notFound();
 });
 
+// ============================================================================
+// OpenAPI Spec Endpoint
+// ============================================================================
+
+app.get("/api", (c) => c.json(openApiSpec));
+
 // ============================================================================
 // KV Endpoints
 // ============================================================================
diff --git a/packages/miniflare/src/workers/local-explorer/generated/types.gen.ts b/packages/miniflare/src/workers/local-explorer/generated/types.gen.ts
index 12c788ef5f..5cf8dbdf51 100644
--- a/packages/miniflare/src/workers/local-explorer/generated/types.gen.ts
+++ b/packages/miniflare/src/workers/local-explorer/generated/types.gen.ts
@@ -590,6 +590,31 @@ export type LocalExplorerWorker = {
 	protocol: string;
 };
 
+/**
+ * The name of the workflow.
+ */
+export type WorkflowsWorkflowName = string;
+
+/**
+ * The unique identifier of a workflow instance.
+ */
+export type WorkflowsInstanceId = string;
+
+export type WorkflowsWorkflow = {
+	/**
+	 * The name of the workflow.
+	 */
+	name: string;
+	/**
+	 * The entrypoint class name of the workflow.
+	 */
+	class_name?: string;
+	/**
+	 * The script name containing the workflow.
+	 */
+	script_name?: string;
+};
+
 export type WorkflowsWorkflowDetails = {
 	/**
 	 * The name of the workflow.
@@ -618,31 +643,6 @@ export type WorkflowsWorkflowDetails = {
 	};
 };
 
-/**
- * The name of the workflow.
- */
-export type WorkflowsWorkflowName = string;
-
-/**
- * The unique identifier of a workflow instance.
- */
-export type WorkflowsInstanceId = string;
-
-export type WorkflowsWorkflow = {
-	/**
-	 * The name of the workflow.
-	 */
-	name: string;
-	/**
-	 * The entrypoint class name of the workflow.
-	 */
-	class_name?: string;
-	/**
-	 * The script name containing the workflow.
-	 */
-	script_name?: string;
-};
-
 export type WorkflowsInstance = {
 	/**
 	 * The unique identifier of the workflow instance.
diff --git a/packages/miniflare/src/workers/local-explorer/generated/zod.gen.ts b/packages/miniflare/src/workers/local-explorer/generated/zod.gen.ts
index dd5635df46..85a9edb4cc 100644
--- a/packages/miniflare/src/workers/local-explorer/generated/zod.gen.ts
+++ b/packages/miniflare/src/workers/local-explorer/generated/zod.gen.ts
@@ -409,22 +409,6 @@ export const zLocalExplorerWorker = z.object({
 	protocol: z.string(),
 });
 
-export const zWorkflowsWorkflowDetails = z.object({
-	name: z.string(),
-	class_name: z.string(),
-	script_name: z.string(),
-	instances: z.object({
-		complete: z.number().optional(),
-		errored: z.number().optional(),
-		paused: z.number().optional(),
-		queued: z.number().optional(),
-		running: z.number().optional(),
-		terminated: z.number().optional(),
-		waiting: z.number().optional(),
-		waitingForPause: z.number().optional(),
-	}),
-});
-
 /**
  * The name of the workflow.
  */
@@ -441,6 +425,22 @@ export const zWorkflowsWorkflow = z.object({
 	script_name: z.string().optional(),
 });
 
+export const zWorkflowsWorkflowDetails = z.object({
+	name: z.string(),
+	class_name: z.string(),
+	script_name: z.string(),
+	instances: z.object({
+		complete: z.number().optional(),
+		errored: z.number().optional(),
+		paused: z.number().optional(),
+		queued: z.number().optional(),
+		running: z.number().optional(),
+		terminated: z.number().optional(),
+		waiting: z.number().optional(),
+		waitingForPause: z.number().optional(),
+	}),
+});
+
 export const zWorkflowsInstance = z.object({
 	id: z.string(),
 	status: z
diff --git a/packages/miniflare/src/workers/local-explorer/openapi.local.json b/packages/miniflare/src/workers/local-explorer/openapi.local.json
index a4fd1de84c..231beca5cb 100644
--- a/packages/miniflare/src/workers/local-explorer/openapi.local.json
+++ b/packages/miniflare/src/workers/local-explorer/openapi.local.json
@@ -2,7 +2,7 @@
 	"openapi": "3.0.3",
 	"info": {
 		"title": "Local Explorer API",
-		"description": "Local subset of Cloudflare API for exploring resources during local development.",
+		"description": "A local subset of the Cloudflare API for inspecting and modifying resource state during local development. Supports D1, R2, KV, Durable Objects and Workflows.",
 		"version": "0.0.1"
 	},
 	"servers": [
@@ -1241,7 +1241,6 @@
 			"get": {
 				"description": "List all workers in the local dev registry.",
 				"operationId": "local-explorer-list-workers",
-				"parameters": [],
 				"responses": {
 					"200": {
 						"content": {
@@ -3010,6 +3009,34 @@
 					}
 				}
 			},
+			"workflows_workflow-name": {
+				"description": "The name of the workflow.",
+				"example": "my-workflow",
+				"type": "string"
+			},
+			"workflows_instance-id": {
+				"description": "The unique identifier of a workflow instance.",
+				"example": "my-instance-id",
+				"type": "string"
+			},
+			"workflows_workflow": {
+				"type": "object",
+				"properties": {
+					"name": {
+						"type": "string",
+						"description": "The name of the workflow."
+					},
+					"class_name": {
+						"type": "string",
+						"description": "The entrypoint class name of the workflow."
+					},
+					"script_name": {
+						"type": "string",
+						"description": "The script name containing the workflow."
+					}
+				},
+				"required": ["name"]
+			},
 			"workflows_workflow-details": {
 				"type": "object",
 				"properties": {
@@ -3058,34 +3085,6 @@
 				},
 				"required": ["name", "class_name", "script_name", "instances"]
 			},
-			"workflows_workflow-name": {
-				"description": "The name of the workflow.",
-				"example": "my-workflow",
-				"type": "string"
-			},
-			"workflows_instance-id": {
-				"description": "The unique identifier of a workflow instance.",
-				"example": "my-instance-id",
-				"type": "string"
-			},
-			"workflows_workflow": {
-				"type": "object",
-				"properties": {
-					"name": {
-						"type": "string",
-						"description": "The name of the workflow."
-					},
-					"class_name": {
-						"type": "string",
-						"description": "The entrypoint class name of the workflow."
-					},
-					"script_name": {
-						"type": "string",
-						"description": "The script name containing the workflow."
-					}
-				},
-				"required": ["name"]
-			},
 			"workflows_instance": {
 				"type": "object",
 				"properties": {
diff --git a/packages/miniflare/test/plugins/local-explorer/index.spec.ts b/packages/miniflare/test/plugins/local-explorer/index.spec.ts
index 17c32335bd..c8be4f7937 100644
--- a/packages/miniflare/test/plugins/local-explorer/index.spec.ts
+++ b/packages/miniflare/test/plugins/local-explorer/index.spec.ts
@@ -217,7 +217,7 @@ describe("Local Explorer API validation", () => {
 			"http://localhost:5173"
 		);
 		expect(res.headers.get("Access-Control-Allow-Methods")).toBe(
-			"GET, POST, PUT, DELETE, OPTIONS"
+			"GET, POST, PUT, PATCH, DELETE, OPTIONS"
 		);
 		await res.arrayBuffer();
 
@@ -255,6 +255,20 @@ describe("Local Explorer API validation", () => {
 	});
 
 	describe("routing", () => {
+		test("serves OpenAPI spec at /cdn-cgi/explorer/api", async ({ expect }) => {
+			const res = await mf.dispatchFetch(
+				"http://localhost/cdn-cgi/explorer/api"
+			);
+			expect(res.status).toBe(200);
+			expect(res.headers.get("Content-Type")).toContain("application/json");
+
+			const spec = await res.json();
+			expect(spec).toMatchObject({
+				openapi: "3.0.3",
+				info: { title: "Local Explorer API" },
+			});
+		});
+
 		test("serves explorer UI at /cdn-cgi/explorer", async ({ expect }) => {
 			const res = await mf.dispatchFetch("http://localhost/cdn-cgi/explorer");
 			expect(res.status).toBe(200);