diff --git a/.changeset/plugin-route-site-context.md b/.changeset/plugin-route-site-context.md
new file mode 100644
index 0000000000..156f51eb1d
--- /dev/null
+++ b/.changeset/plugin-route-site-context.md
@@ -0,0 +1,5 @@
+---
+"emdash": patch
+---
+
+Fixes trusted plugin API routes receiving empty site metadata and relative URLs by using the same site context as plugin hooks.
diff --git a/packages/core/src/emdash-runtime.ts b/packages/core/src/emdash-runtime.ts
index ecf6fa0c82..004d3f93df 100644
--- a/packages/core/src/emdash-runtime.ts
+++ b/packages/core/src/emdash-runtime.ts
@@ -3333,8 +3333,7 @@ export class EmDashRuntime {
 		const trustedPlugin = this.configuredPlugins.find((p) => p.id === pluginId);
 		if (trustedPlugin && this.enabledPlugins.has(trustedPlugin.id)) {
 			const routeRegistry = new PluginRouteRegistry({
-				db: this.db,
-				storage: this.storage ?? undefined,
+				...this.pipelineFactoryOptions,
 				emailPipeline: this.email ?? undefined,
 				trustedProxyHeaders: getTrustedProxyHeaders(this.config),
 			});
diff --git a/packages/core/tests/integration/runtime/plugin-route-site-info.test.ts b/packages/core/tests/integration/runtime/plugin-route-site-info.test.ts
new file mode 100644
index 0000000000..112ffe9c0c
--- /dev/null
+++ b/packages/core/tests/integration/runtime/plugin-route-site-info.test.ts
@@ -0,0 +1,91 @@
+import { describe, expect, it } from "vitest";
+
+import type { EmDashConfig } from "../../../src/astro/integration/runtime.js";
+import { EmDashRuntime } from "../../../src/emdash-runtime.js";
+import type { RuntimeDependencies } from "../../../src/emdash-runtime.js";
+import { definePlugin } from "../../../src/plugins/define-plugin.js";
+import { createHookPipeline } from "../../../src/plugins/hooks.js";
+
+function buildRuntime(): EmDashRuntime {
+	// This route only reads site context, so it never touches the database.
+	const db = {} as never;
+	const plugin = definePlugin({
+		id: "site-aware-route",
+		version: "1.0.0",
+		routes: {
+			inspect: {
+				handler: async (ctx) => ({
+					site: ctx.site,
+					url: ctx.url("/checkout/success"),
+				}),
+			},
+		},
+	});
+	const config: EmDashConfig = {};
+	const pipelineFactoryOptions = {
+		db,
+		siteInfo: {
+			siteName: "Example Site",
+			siteUrl: "https://example.com/",
+			locale: "nl",
+		},
+	} as const;
+	const hooks = createHookPipeline([plugin], pipelineFactoryOptions);
+	const pipelineRef = { current: hooks };
+	const runtimeDeps: RuntimeDependencies = {
+		config,
+		plugins: [plugin],
+		createDialect: () => {
+			throw new Error("createDialect not used in this test");
+		},
+		createStorage: null,
+		sandboxEnabled: false,
+		sandboxedPluginEntries: [],
+		createSandboxRunner: null,
+	};
+
+	return new EmDashRuntime({
+		db,
+		storage: null,
+		configuredPlugins: [plugin],
+		sandboxedPlugins: new Map(),
+		sandboxedPluginEntries: [],
+		hooks,
+		enabledPlugins: new Set([plugin.id]),
+		pluginStates: new Map(),
+		config,
+		mediaProviders: new Map(),
+		mediaProviderEntries: [],
+		cronExecutor: null,
+		cronScheduler: null,
+		emailPipeline: null,
+		allPipelinePlugins: [plugin],
+		pipelineFactoryOptions,
+		runtimeDeps,
+		pipelineRef,
+	});
+}
+
+describe("EmDashRuntime.handlePluginApiRoute site context", () => {
+	it("passes configured site information to trusted plugin routes", async () => {
+		const runtime = buildRuntime();
+		const result = await runtime.handlePluginApiRoute(
+			"site-aware-route",
+			"GET",
+			"/inspect",
+			new Request("https://admin.example.com/_emdash/api/plugin/site-aware-route/inspect"),
+		);
+
+		expect(result).toMatchObject({
+			success: true,
+			data: {
+				site: {
+					name: "Example Site",
+					url: "https://example.com",
+					locale: "nl",
+				},
+				url: "https://example.com/checkout/success",
+			},
+		});
+	});
+});