diff --git a/.changeset/slow-hornets-try.md b/.changeset/slow-hornets-try.md
new file mode 100644
index 0000000000..970e7f4910
--- /dev/null
+++ b/.changeset/slow-hornets-try.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/rss': major
+---
+
+Removes the `drafts` option as the feature is deprecated in Astro 3.0
diff --git a/.changeset/wicked-sloths-develop.md b/.changeset/wicked-sloths-develop.md
new file mode 100644
index 0000000000..806e027072
--- /dev/null
+++ b/.changeset/wicked-sloths-develop.md
@@ -0,0 +1,11 @@
+---
+'astro': major
+---
+
+Removes deprecated features from Astro 3.0
+
+- Adapters are now required to pass `supportedAstroFeatures` to specify a list of features they support.
+- The `build.split` and `build.excludeMiddleware` options are removed. Use `functionPerRoute` and `edgeMiddleware` from adapters instead.
+- The `markdown.drafts` option and draft feature is removed. Use content collections instead.
+- Lowercase endpoint names are no longer supported. Use uppercase endpoint names instead.
+- `getHeaders()` exported from markdown files is removed. Use `getHeadings()` instead.
diff --git a/benchmark/packages/timer/src/index.ts b/benchmark/packages/timer/src/index.ts
index 49edcb5e86..2ea41af662 100644
--- a/benchmark/packages/timer/src/index.ts
+++ b/benchmark/packages/timer/src/index.ts
@@ -6,6 +6,7 @@ export function getAdapter(): AstroAdapter {
 		serverEntrypoint: '@benchmark/timer/server.js',
 		previewEntrypoint: '@benchmark/timer/preview.js',
 		exports: ['handler'],
+		supportedAstroFeatures: {},
 	};
 }
 
diff --git a/packages/astro-rss/README.md b/packages/astro-rss/README.md
index 268f58f266..c8485b02e3 100644
--- a/packages/astro-rss/README.md
+++ b/packages/astro-rss/README.md
@@ -28,7 +28,7 @@ Start by [adding a `site` to your project's `astro.config` for link generation](
 import rss from '@astrojs/rss';
 import { getCollection } from 'astro:content';
 
-export async function get(context) {
+export async function GET(context) {
   const posts = await getCollection('blog');
   return rss({
     title: 'Buzz’s Blog',
@@ -55,7 +55,7 @@ Read **[Astro's RSS docs][astro-rss]** for more on using content collections, an
 The `rss` default export offers a number of configuration options. Here's a quick reference:
 
 ```js
-export function get(context) {
+export function GET(context) {
   return rss({
     // `<title>` field in output xml
     title: 'Buzz’s Blog',
@@ -98,7 +98,7 @@ The base URL to use when generating RSS item links. We recommend using the [endp
 ```ts
 import rss from '@astrojs/rss';
 
-export const get = (context) =>
+export const GET = (context) =>
   rss({
     site: context.site,
     // ...
@@ -113,14 +113,6 @@ A list of formatted RSS feed items. See [Astro's RSS items documentation](https:
 
 When providing a formatted RSS item list, see the [`RSSFeedItem` type reference](#rssfeeditem).
 
-### drafts
-
-Type: `boolean (optional)`
-
-**Deprecated**: Manually filter `items` instead.
-
-Set `drafts: true` to include [draft posts](https://docs.astro.build/en/guides/markdown-content/#draft-pages) in the feed output. By default, this option is `false` and draft posts are not included.
-
 ### stylesheet
 
 Type: `string (optional)`
@@ -136,7 +128,7 @@ A string of valid XML to be injected between your feed's `<description>` and `<i
 ```js
 import rss from '@astrojs/rss';
 
-export const get = () => rss({
+export const GET = () => rss({
     ...
     customData: '<language>en-us</language>',
   });
@@ -181,7 +173,7 @@ By default, the library will add trailing slashes to the emitted URLs. To preven
 ```js
 import rss from '@astrojs/rss';
 
-export const get = () =>
+export const GET = () =>
   rss({
     trailingSlash: false,
   });
@@ -361,7 +353,7 @@ This function assumes, but does not verify, you are globbing for items inside `s
 // src/pages/rss.xml.js
 import rss, { pagesGlobToRssItems } from '@astrojs/rss';
 
-export async function get(context) {
+export async function GET(context) {
   return rss({
     title: 'Buzz’s Blog',
     description: 'A humble Astronaut’s guide to the stars',
@@ -379,7 +371,7 @@ As `rss()` returns a `Response`, you can also use `getRssString()` to get the RS
 // src/pages/rss.xml.js
 import { getRssString } from '@astrojs/rss';
 
-export async function get(context) {
+export async function GET(context) {
   const rssString = await getRssString({
     title: 'Buzz’s Blog',
     ...
diff --git a/packages/astro-rss/src/index.ts b/packages/astro-rss/src/index.ts
index a611afc163..48c5defe85 100644
--- a/packages/astro-rss/src/index.ts
+++ b/packages/astro-rss/src/index.ts
@@ -27,11 +27,6 @@ export type RSSOptions = {
 	stylesheet?: z.infer<typeof rssOptionsValidator>['stylesheet'];
 	/** Specify custom data in opening of file */
 	customData?: z.infer<typeof rssOptionsValidator>['customData'];
-	/**
-	 * Whether to include drafts or not
-	 * @deprecated Deprecated since version 3.0. Use content collections instead.
-	 */
-	drafts?: z.infer<typeof rssOptionsValidator>['drafts'];
 	trailingSlash?: z.infer<typeof rssOptionsValidator>['trailingSlash'];
 };
 
@@ -48,11 +43,6 @@ export type RSSFeedItem = {
 	description?: z.infer<typeof rssSchema>['description'];
 	/** Append some other XML-valid data to this item */
 	customData?: z.infer<typeof rssSchema>['customData'];
-	/**
-	 * Whether draft or not
-	 * @deprecated Deprecated since version 3.0. Use content collections instead.
-	 */
-	draft?: z.infer<typeof rssSchema>['draft'];
 	/** Categories or tags related to the item */
 	categories?: z.infer<typeof rssSchema>['categories'];
 	/** The item author's email address */
@@ -92,7 +82,6 @@ const rssOptionsValidator = z.object({
 			return items;
 		}),
 	xmlns: z.record(z.string()).optional(),
-	drafts: z.boolean().default(false),
 	stylesheet: z.union([z.string(), z.boolean()]).optional(),
 	customData: z.string().optional(),
 	trailingSlash: z.boolean().default(true),
@@ -159,10 +148,7 @@ export function pagesGlobToRssItems(items: GlobResult): Promise<ValidatedRSSFeed
 
 /** Generate RSS 2.0 feed */
 async function generateRSS(rssOptions: ValidatedRSSOptions): Promise<string> {
-	const { site } = rssOptions;
-	const items = rssOptions.drafts
-		? rssOptions.items
-		: rssOptions.items.filter((item) => !item.draft);
+	const { items, site } = rssOptions;
 
 	const xmlOptions = {
 		ignoreAttributes: false,
diff --git a/packages/astro-rss/src/schema.ts b/packages/astro-rss/src/schema.ts
index eb15ecd584..98aa35f812 100644
--- a/packages/astro-rss/src/schema.ts
+++ b/packages/astro-rss/src/schema.ts
@@ -8,7 +8,6 @@ export const rssSchema = z.object({
 		.refine((value) => !isNaN(value.getTime())),
 	description: z.string().optional(),
 	customData: z.string().optional(),
-	draft: z.boolean().optional(),
 	categories: z.array(z.string()).optional(),
 	author: z.string().optional(),
 	commentsUrl: z.string().optional(),
diff --git a/packages/astro-rss/test/rss.test.js b/packages/astro-rss/test/rss.test.js
index 5dfb48b32a..cc7bff82b2 100644
--- a/packages/astro-rss/test/rss.test.js
+++ b/packages/astro-rss/test/rss.test.js
@@ -156,36 +156,12 @@ describe('getRssString', () => {
 		chai.expect(str).to.contain(customData);
 	});
 
-	it('should filter out entries marked as `draft`', async () => {
-		const str = await getRssString({
-			title,
-			description,
-			items: [phpFeedItem, { ...web1FeedItem, draft: true }],
-			site,
-		});
-
-		chai.expect(str).xml.to.equal(validXmlWithoutWeb1FeedResult);
-	});
-
-	it('should respect drafts option', async () => {
-		const str = await getRssString({
-			title,
-			description,
-			items: [phpFeedItem, { ...web1FeedItem, draft: true }],
-			site,
-			drafts: true,
-		});
-
-		chai.expect(str).xml.to.equal(validXmlResult);
-	});
-
 	it('should not append trailing slash to URLs with the given option', async () => {
 		const str = await getRssString({
 			title,
 			description,
-			items: [phpFeedItem, { ...web1FeedItem, draft: true }],
+			items: [phpFeedItem],
 			site,
-			drafts: true,
 			trailingSlash: false,
 		});
 
diff --git a/packages/astro/client.d.ts b/packages/astro/client.d.ts
index fe1a233116..7cec060661 100644
--- a/packages/astro/client.d.ts
+++ b/packages/astro/client.d.ts
@@ -242,8 +242,6 @@ interface ExportedMarkdownModuleEntities {
 	file: MD['file'];
 	url: MD['url'];
 	getHeadings: MD['getHeadings'];
-	/** @deprecated Renamed to `getHeadings()` */
-	getHeaders: () => void;
 	Content: MD['Content'];
 	rawContent: MD['rawContent'];
 	compiledContent: MD['compiledContent'];
diff --git a/packages/astro/src/@types/astro.ts b/packages/astro/src/@types/astro.ts
index 5531cf9b9d..a769bcdf48 100644
--- a/packages/astro/src/@types/astro.ts
+++ b/packages/astro/src/@types/astro.ts
@@ -143,7 +143,6 @@ export interface CLIFlags {
 	host?: string | boolean;
 	port?: number;
 	config?: string;
-	drafts?: boolean;
 	open?: boolean;
 }
 
@@ -886,33 +885,6 @@ export interface AstroUserConfig {
 		 * ```
 		 */
 		inlineStylesheets?: 'always' | 'auto' | 'never';
-
-		/**
-		 * @docs
-		 * @name build.split
-		 * @type {boolean}
-		 * @default `false`
-		 * @deprecated Deprecated since version 3.0.
-		 * @description
-		 * The build config option `build.split` has been replaced by the adapter configuration option [`functionPerRoute`](/en/reference/adapter-reference/#functionperroute).
-		 *
-		 * Please see your [SSR adapter's documentation](/en/guides/integrations-guide/#official-integrations) for using `functionPerRoute` to define how your SSR code is bundled.
-		 *
-		 */
-		split?: boolean;
-
-		/**
-		 * @docs
-		 * @name build.excludeMiddleware
-		 * @type {boolean}
-		 * @default `false`
-		 * @deprecated Deprecated since version 3.0.
-		 * @description
-		 * The build config option `build.excludeMiddleware` has been replaced by the adapter configuration option [`edgeMiddleware`](/en/reference/adapter-reference/#edgemiddleware).
-		 *
-		 * Please see your [SSR adapter's documentation](/en/guides/integrations-guide/#official-integrations) for using `edgeMiddleware` to define whether or not any SSR middleware code will be bundled when built.
-		 */
-		excludeMiddleware?: boolean;
 	};
 
 	/**
@@ -1183,28 +1155,6 @@ export interface AstroUserConfig {
 	 * @name Markdown Options
 	 */
 	markdown?: {
-		/**
-		 * @docs
-		 * @name markdown.drafts
-		 * @type {boolean}
-		 * @default `false`
-		 * @deprecated Deprecated since version 3.0. Use content collections instead.
-		 * @description
-		 * Control whether Markdown draft pages should be included in the build.
-		 *
-		 * A Markdown page is considered a draft if it includes `draft: true` in its frontmatter. Draft pages are always included & visible during development (`astro dev`) but by default they will not be included in your final build.
-		 *
-		 * ```js
-		 * {
-		 *   markdown: {
-		 *     // Example: Include all drafts in your final build
-		 *     drafts: true,
-		 *   }
-		 * }
-		 * ```
-		 */
-		drafts?: boolean;
-
 		/**
 		 * @docs
 		 * @name markdown.shikiConfig
@@ -1749,10 +1699,6 @@ export interface ComponentInstance {
 	css?: string[];
 	partial?: boolean;
 	prerender?: boolean;
-	/**
-	 * Only used for logging if deprecated drafts feature is used
-	 */
-	frontmatter?: Record<string, any>;
 	getStaticPaths?: (options: GetStaticPathsOptions) => GetStaticPathsResult;
 }
 
@@ -2056,7 +2002,7 @@ export interface AstroAdapter {
 	 *
 	 * If the adapter is not able to handle certain configurations, Astro will throw an error.
 	 */
-	supportedAstroFeatures?: AstroFeatureMap;
+	supportedAstroFeatures: AstroFeatureMap;
 }
 
 type Body = string;
@@ -2145,7 +2091,7 @@ export interface APIContext<
 	 *   ];
 	 * }
 	 *
-	 * export async function get({ params }) {
+	 * export async function GET({ params }) {
 	 *  return {
 	 * 	  body: `Hello user ${params.id}!`,
 	 *  }
@@ -2168,7 +2114,7 @@ export interface APIContext<
 	 *   ];
 	 * }
 	 *
-	 * export function get({ props }) {
+	 * export function GET({ props }) {
 	 *   return {
 	 *     body: `Hello ${props.name}!`,
 	 *   }
@@ -2184,7 +2130,7 @@ export interface APIContext<
 	 * Example usage:
 	 * ```ts
 	 * // src/pages/secret.ts
-	 * export function get({ redirect }) {
+	 * export function GET({ redirect }) {
 	 *   return redirect('/login');
 	 * }
 	 * ```
diff --git a/packages/astro/src/cli/build/index.ts b/packages/astro/src/cli/build/index.ts
index 1a7d5aa520..15ff584317 100644
--- a/packages/astro/src/cli/build/index.ts
+++ b/packages/astro/src/cli/build/index.ts
@@ -14,7 +14,6 @@ export async function build({ flags }: BuildOptions) {
 			usage: '[...flags]',
 			tables: {
 				Flags: [
-					['--drafts', `Include Markdown draft pages in the build.`],
 					['--outDir <directory>', `Specify the output directory for the build.`],
 					['--help (-h)', 'See all available flags.'],
 				],
diff --git a/packages/astro/src/cli/flags.ts b/packages/astro/src/cli/flags.ts
index c97f1801ac..c384d98671 100644
--- a/packages/astro/src/cli/flags.ts
+++ b/packages/astro/src/cli/flags.ts
@@ -15,9 +15,6 @@ export function flagsToAstroInlineConfig(flags: Flags): AstroInlineConfig {
 		site: typeof flags.site === 'string' ? flags.site : undefined,
 		base: typeof flags.base === 'string' ? flags.base : undefined,
 		outDir: typeof flags.outDir === 'string' ? flags.outDir : undefined,
-		markdown: {
-			drafts: typeof flags.drafts === 'boolean' ? flags.drafts : undefined,
-		},
 		server: {
 			port: typeof flags.port === 'number' ? flags.port : undefined,
 			host:
diff --git a/packages/astro/src/core/build/generate.ts b/packages/astro/src/core/build/generate.ts
index 3ffd13b7dd..4750f2afc8 100644
--- a/packages/astro/src/core/build/generate.ts
+++ b/packages/astro/src/core/build/generate.ts
@@ -111,16 +111,6 @@ async function getEntryForFallbackRoute(
 	return RedirectSinglePageBuiltModule;
 }
 
-function shouldSkipDraft(pageModule: ComponentInstance, settings: AstroSettings): boolean {
-	return (
-		// Drafts are disabled
-		!settings.config.markdown.drafts &&
-		// This is a draft post
-		'frontmatter' in pageModule &&
-		(pageModule as any).frontmatter?.draft === true
-	);
-}
-
 // Gives back a facadeId that is relative to the root.
 // ie, src/pages/index.astro instead of /Users/name..../src/pages/index.astro
 export function rootRelativeFacadeId(facadeId: string, settings: AstroSettings): string {
@@ -185,11 +175,7 @@ export async function generatePages(opts: StaticBuildOptions, internals: BuildIn
 			if (pageData.route.prerender) {
 				const ssrEntryURLPage = createEntryURL(filePath, outFolder);
 				const ssrEntryPage = await import(ssrEntryURLPage.toString());
-				if (
-					// TODO: remove in Astro 4.0
-					opts.settings.config.build.split ||
-					opts.settings.adapter?.adapterFeatures?.functionPerRoute
-				) {
+				if (opts.settings.adapter?.adapterFeatures?.functionPerRoute) {
 					// forcing to use undefined, so we fail in an expected way if the module is not even there.
 					const ssrEntry = ssrEntryPage?.pageModule;
 					if (ssrEntry) {
@@ -244,10 +230,7 @@ export async function generatePages(opts: StaticBuildOptions, internals: BuildIn
 
 		await queue.onIdle();
 		const assetsTimeEnd = performance.now();
-		logger.info(
-			null,
-			green(`✓ Completed in ${getTimeStat(assetsTimer, assetsTimeEnd)}.\n`)
-		);
+		logger.info(null, green(`✓ Completed in ${getTimeStat(assetsTimer, assetsTimeEnd)}.\n`));
 
 		delete globalThis?.astroAsset?.addStaticImage;
 	}
@@ -302,16 +285,6 @@ async function generatePage(
 		);
 	}
 	const pageModule = await pageModulePromise();
-	// TODO: Remove in Astro 4.0
-	if (shouldSkipDraft(pageModule, pipeline.getSettings())) {
-		logger.info(null, `${magenta('⚠️')}  Skipping draft ${pageData.route.component}`);
-		logger.warn(
-			null,
-			`The drafts feature is deprecated. You should migrate to content collections instead. See https://docs.astro.build/en/guides/content-collections/#filtering-collection-queries for more information.`
-		);
-		return;
-	}
-
 	const generationOptions: Readonly<GeneratePathOptions> = {
 		pageData,
 		linkIds,
@@ -390,13 +363,13 @@ async function getPathsForRoute(
 				throw err;
 			});
 
-		const label = staticPaths.length === 1 ? 'page' : 'pages';
-		logger.debug(
-			'build',
-			`├── ${bold(green('✔'))} ${route.component} → ${magenta(
-				`[${staticPaths.length} ${label}]`
-			)}`
-		);
+			const label = staticPaths.length === 1 ? 'page' : 'pages';
+			logger.debug(
+				'build',
+				`├── ${bold(green('✔'))} ${route.component} → ${magenta(
+					`[${staticPaths.length} ${label}]`
+				)}`
+			);
 
 			paths.push(
 				...staticPaths
diff --git a/packages/astro/src/core/build/index.ts b/packages/astro/src/core/build/index.ts
index 19f263a017..0245e50c2f 100644
--- a/packages/astro/src/core/build/index.ts
+++ b/packages/astro/src/core/build/index.ts
@@ -161,7 +161,7 @@ class AstroBuilder {
 		this.logger.info('build', `output: ${blue('"' + this.settings.config.output + '"')}`);
 		this.logger.info('build', `directory: ${blue(fileURLToPath(this.settings.config.outDir))}`);
 		if (this.settings.adapter) {
-		  this.logger.info('build', `adapter: ${green(this.settings.adapter.name)}`);
+			this.logger.info('build', `adapter: ${green(this.settings.adapter.name)}`);
 		}
 		this.logger.info('build', 'Collecting build info...');
 		this.timer.loadStart = performance.now();
@@ -253,32 +253,6 @@ class AstroBuilder {
 				`the outDir cannot be the root folder. Please build to a folder such as dist.`
 			);
 		}
-
-		// TODO: Remove in Astro 4.0
-		if (config.build.split === true) {
-			if (config.output === 'static') {
-				this.logger.warn(
-					'config',
-					'The option `build.split` won\'t take effect, because `output` is not `"server"` or `"hybrid"`.'
-				);
-			}
-			this.logger.warn(
-				'deprecated',
-				'The option `build.split` is deprecated. Use the adapter options.'
-			);
-		}
-		if (config.build.excludeMiddleware === true) {
-			if (config.output === 'static') {
-				this.logger.warn(
-					'config',
-					'The option `build.excludeMiddleware` won\'t take effect, because `output` is not `"server"` or `"hybrid"`.'
-				);
-			}
-			this.logger.warn(
-				'deprecated',
-				'The option `build.excludeMiddleware` is deprecated. Use the adapter options.'
-			);
-		}
 	}
 
 	/** Stats */
diff --git a/packages/astro/src/core/build/plugins/plugin-manifest.ts b/packages/astro/src/core/build/plugins/plugin-manifest.ts
index 83065ecacb..0ac0db0288 100644
--- a/packages/astro/src/core/build/plugins/plugin-manifest.ts
+++ b/packages/astro/src/core/build/plugins/plugin-manifest.ts
@@ -98,8 +98,6 @@ export function pluginManifest(
 
 				const manifest = await createManifest(options, internals);
 				const shouldPassMiddlewareEntryPoint =
-					// TODO: remove in Astro 4.0
-					options.settings.config.build.excludeMiddleware ||
 					options.settings.adapter?.adapterFeatures?.edgeMiddleware;
 				await runHookBuildSsr({
 					config: options.settings.config,
diff --git a/packages/astro/src/core/build/plugins/plugin-pages.ts b/packages/astro/src/core/build/plugins/plugin-pages.ts
index 2a348f18fe..fee94071ee 100644
--- a/packages/astro/src/core/build/plugins/plugin-pages.ts
+++ b/packages/astro/src/core/build/plugins/plugin-pages.ts
@@ -92,10 +92,6 @@ function vitePluginPages(opts: StaticBuildOptions, internals: BuildInternals): V
 }
 
 export function shouldBundleMiddleware(settings: AstroSettings) {
-	// TODO: Remove in Astro 4.0
-	if (settings.config.build.excludeMiddleware === true) {
-		return false;
-	}
 	if (settings.adapter?.adapterFeatures?.edgeMiddleware === true) {
 		return false;
 	}
diff --git a/packages/astro/src/core/build/plugins/plugin-ssr.ts b/packages/astro/src/core/build/plugins/plugin-ssr.ts
index fd892c9b63..6a6dd224af 100644
--- a/packages/astro/src/core/build/plugins/plugin-ssr.ts
+++ b/packages/astro/src/core/build/plugins/plugin-ssr.ts
@@ -102,10 +102,7 @@ export function pluginSSR(
 		hooks: {
 			'build:before': () => {
 				let vitePlugin =
-					ssr &&
-					// TODO: Remove in Astro 4.0
-					options.settings.config.build.split === false &&
-					functionPerRouteEnabled === false
+					ssr && functionPerRouteEnabled === false
 						? vitePluginSSR(internals, options.settings.adapter!, options)
 						: undefined;
 
@@ -119,7 +116,7 @@ export function pluginSSR(
 					return;
 				}
 
-				if (options.settings.config.build.split || functionPerRouteEnabled) {
+				if (functionPerRouteEnabled) {
 					return;
 				}
 
@@ -146,7 +143,7 @@ function vitePluginSSRSplit(
 		name: '@astrojs/vite-plugin-astro-ssr-split',
 		enforce: 'post',
 		options(opts) {
-			if (options.settings.config.build.split || functionPerRouteEnabled) {
+			if (functionPerRouteEnabled) {
 				const inputs = new Set<string>();
 
 				for (const [path, pageData] of eachPageFromAllPages(options.allPages)) {
@@ -223,7 +220,7 @@ export function pluginSSRSplit(
 		hooks: {
 			'build:before': () => {
 				let vitePlugin =
-					ssr && (options.settings.config.build.split || functionPerRouteEnabled)
+					ssr && functionPerRouteEnabled
 						? vitePluginSSRSplit(internals, options.settings.adapter!, options)
 						: undefined;
 
@@ -240,7 +237,7 @@ function generateSSRCode(config: AstroConfig, adapter: AstroAdapter) {
 	const imports: string[] = [];
 	const contents: string[] = [];
 	let pageMap;
-	if (config.build.split || isFunctionPerRouteEnabled(adapter)) {
+	if (isFunctionPerRouteEnabled(adapter)) {
 		pageMap = 'pageModule';
 	} else {
 		pageMap = 'pageMap';
diff --git a/packages/astro/src/core/config/config.ts b/packages/astro/src/core/config/config.ts
index 53acb6924f..82bb872b15 100644
--- a/packages/astro/src/core/config/config.ts
+++ b/packages/astro/src/core/config/config.ts
@@ -67,7 +67,6 @@ export function resolveFlags(flags: Partial<Flags>): CLIFlags {
 		config: typeof flags.config === 'string' ? flags.config : undefined,
 		host:
 			typeof flags.host === 'string' || typeof flags.host === 'boolean' ? flags.host : undefined,
-		drafts: typeof flags.drafts === 'boolean' ? flags.drafts : undefined,
 	};
 }
 
diff --git a/packages/astro/src/core/config/schema.ts b/packages/astro/src/core/config/schema.ts
index eaa11786a5..4ef77b5326 100644
--- a/packages/astro/src/core/config/schema.ts
+++ b/packages/astro/src/core/config/schema.ts
@@ -38,8 +38,6 @@ const ASTRO_CONFIG_DEFAULTS = {
 		serverEntry: 'entry.mjs',
 		redirects: true,
 		inlineStylesheets: 'auto',
-		split: false,
-		excludeMiddleware: false,
 	},
 	image: {
 		service: { entrypoint: 'astro/assets/services/sharp', config: {} },
@@ -51,10 +49,7 @@ const ASTRO_CONFIG_DEFAULTS = {
 		open: false,
 	},
 	integrations: [],
-	markdown: {
-		drafts: false,
-		...markdownConfigDefaults,
-	},
+	markdown: markdownConfigDefaults,
 	vite: {},
 	legacy: {},
 	redirects: {},
@@ -139,20 +134,6 @@ export const AstroConfigSchema = z.object({
 				.enum(['always', 'auto', 'never'])
 				.optional()
 				.default(ASTRO_CONFIG_DEFAULTS.build.inlineStylesheets),
-
-			/**
-			 * @deprecated
-			 * Use the adapter feature instead
-			 */
-			split: z.boolean().optional().default(ASTRO_CONFIG_DEFAULTS.build.split),
-			/**
-			 * @deprecated
-			 * Use the adapter feature instead
-			 */
-			excludeMiddleware: z
-				.boolean()
-				.optional()
-				.default(ASTRO_CONFIG_DEFAULTS.build.excludeMiddleware),
 		})
 		.default({}),
 	server: z.preprocess(
@@ -245,7 +226,6 @@ export const AstroConfigSchema = z.object({
 		.default(ASTRO_CONFIG_DEFAULTS.image),
 	markdown: z
 		.object({
-			drafts: z.boolean().default(false),
 			syntaxHighlight: z
 				.union([z.literal('shiki'), z.literal('prism'), z.literal(false)])
 				.default(ASTRO_CONFIG_DEFAULTS.markdown.syntaxHighlight),
@@ -452,12 +432,6 @@ export function createRelativeSchema(cmd: string, fileProtocolRoot: string) {
 					.enum(['always', 'auto', 'never'])
 					.optional()
 					.default(ASTRO_CONFIG_DEFAULTS.build.inlineStylesheets),
-
-				split: z.boolean().optional().default(ASTRO_CONFIG_DEFAULTS.build.split),
-				excludeMiddleware: z
-					.boolean()
-					.optional()
-					.default(ASTRO_CONFIG_DEFAULTS.build.excludeMiddleware),
 			})
 			.optional()
 			.default({}),
diff --git a/packages/astro/src/core/render/core.ts b/packages/astro/src/core/render/core.ts
index 5b120bb074..c73306de06 100644
--- a/packages/astro/src/core/render/core.ts
+++ b/packages/astro/src/core/render/core.ts
@@ -64,14 +64,6 @@ export async function renderPage({ mod, renderContext, env, cookies }: RenderPag
 		routingStrategy: renderContext.routingStrategy,
 	});
 
-	// TODO: Remove in Astro 4.0
-	if (mod.frontmatter && typeof mod.frontmatter === 'object' && 'draft' in mod.frontmatter) {
-		env.logger.warn(
-			null,
-			`The drafts feature is deprecated and used in ${renderContext.route.component}. You should migrate to content collections instead. See https://docs.astro.build/en/guides/content-collections/#filtering-collection-queries for more information.`
-		);
-	}
-
 	const response = await runtimeRenderPage(
 		result,
 		Component,
diff --git a/packages/astro/src/integrations/astroFeaturesValidation.ts b/packages/astro/src/integrations/astroFeaturesValidation.ts
index d9049f8765..4c6b1131b3 100644
--- a/packages/astro/src/integrations/astroFeaturesValidation.ts
+++ b/packages/astro/src/integrations/astroFeaturesValidation.ts
@@ -17,17 +17,6 @@ const UNSUPPORTED_ASSETS_FEATURE: AstroAssetsFeature = {
 	isSharpCompatible: false,
 };
 
-// NOTE: remove for Astro 4.0
-const ALL_UNSUPPORTED: Required<AstroFeatureMap> = {
-	serverOutput: UNSUPPORTED,
-	staticOutput: UNSUPPORTED,
-	hybridOutput: UNSUPPORTED,
-	assets: UNSUPPORTED_ASSETS_FEATURE,
-	i18n: {
-		detectBrowserLanguage: UNSUPPORTED,
-	},
-};
-
 type ValidationResult = {
 	[Property in keyof AstroFeatureMap]: boolean;
 };
@@ -41,7 +30,7 @@ type ValidationResult = {
  */
 export function validateSupportedFeatures(
 	adapterName: string,
-	featureMap: AstroFeatureMap = ALL_UNSUPPORTED,
+	featureMap: AstroFeatureMap,
 	config: AstroConfig,
 	logger: Logger
 ): ValidationResult {
@@ -105,18 +94,21 @@ function validateSupportKind(
 }
 
 function featureIsUnsupported(adapterName: string, logger: Logger, featureName: string) {
-	logger.error(
-		'config',
-		`The feature ${featureName} is not supported (used by ${adapterName}).`
-	);
+	logger.error('config', `The feature ${featureName} is not supported (used by ${adapterName}).`);
 }
 
 function featureIsExperimental(adapterName: string, logger: Logger) {
-	logger.warn('config', `The feature is experimental and subject to change (used by ${adapterName}).`);
+	logger.warn(
+		'config',
+		`The feature is experimental and subject to change (used by ${adapterName}).`
+	);
 }
 
 function featureIsDeprecated(adapterName: string, logger: Logger) {
-	logger.warn('config', `The feature is deprecated and will be removed in the future (used by ${adapterName}).`);
+	logger.warn(
+		'config',
+		`The feature is deprecated and will be removed in the future (used by ${adapterName}).`
+	);
 }
 
 const SHARP_SERVICE = 'astro/assets/services/sharp';
diff --git a/packages/astro/src/integrations/index.ts b/packages/astro/src/integrations/index.ts
index 66c451ee8d..f21fd088b6 100644
--- a/packages/astro/src/integrations/index.ts
+++ b/packages/astro/src/integrations/index.ts
@@ -244,10 +244,8 @@ export async function runHookConfigDone({
 							);
 						}
 						if (!adapter.supportedAstroFeatures) {
-							// NOTE: throw an error in Astro 4.0
-							logger.warn(
-								null,
-								`The adapter ${adapter.name} doesn't provide a feature map. From Astro 3.0, an adapter can provide a feature map. Not providing a feature map will cause an error in Astro 4.0.`
+							throw new Error(
+								`The adapter ${adapter.name} doesn't provide a feature map. It is required in Astro 4.0.`
 							);
 						} else {
 							const validationResult = validateSupportedFeatures(
diff --git a/packages/astro/src/runtime/server/endpoint.ts b/packages/astro/src/runtime/server/endpoint.ts
index df415ca67a..f8fc1c071c 100644
--- a/packages/astro/src/runtime/server/endpoint.ts
+++ b/packages/astro/src/runtime/server/endpoint.ts
@@ -2,35 +2,11 @@ import { bold } from 'kleur/colors';
 import type { APIContext, EndpointHandler, Params } from '../../@types/astro.js';
 import type { Logger } from '../../core/logger/core.js';
 
-function getHandlerFromModule(mod: EndpointHandler, method: string, logger: Logger) {
-	const lowerCaseMethod = method.toLowerCase();
-
-	// TODO: remove in Astro 4.0
-	if (mod[lowerCaseMethod]) {
-		logger.warn(
-			null,
-			`Lower case endpoint names are deprecated and will not be supported in Astro 4.0. Rename the endpoint ${lowerCaseMethod} to ${method}.`
-		);
-	}
+function getHandlerFromModule(mod: EndpointHandler, method: string) {
 	// If there was an exact match on `method`, return that function.
 	if (mod[method]) {
 		return mod[method];
 	}
-
-	// TODO: remove in Astro 4.0
-	if (mod[lowerCaseMethod]) {
-		return mod[lowerCaseMethod];
-	}
-	// TODO: remove in Astro 4.0
-	// Handle `del` instead of `delete`, since `delete` is a reserved word in JS.
-	if (method === 'delete' && mod['del']) {
-		return mod['del'];
-	}
-	// TODO: remove in Astro 4.0
-	// If a single `all` handler was used, return that function.
-	if (mod['all']) {
-		return mod['all'];
-	}
 	if (mod['ALL']) {
 		return mod['ALL'];
 	}
@@ -48,9 +24,8 @@ export async function renderEndpoint(
 	const { request, url } = context;
 
 	const chosenMethod = request.method?.toUpperCase();
-	const handler = getHandlerFromModule(mod, chosenMethod, logger);
-	// TODO: remove the 'get' check in Astro 4.0
-	if (!ssr && ssr === false && chosenMethod && chosenMethod !== 'GET' && chosenMethod !== 'get') {
+	const handler = getHandlerFromModule(mod, chosenMethod);
+	if (!ssr && ssr === false && chosenMethod && chosenMethod !== 'GET') {
 		logger.warn(
 			null,
 			`${url.pathname} ${bold(
diff --git a/packages/astro/test/astro-markdown-drafts.test.js b/packages/astro/test/astro-markdown-drafts.test.js
deleted file mode 100644
index 8f6c753e4c..0000000000
--- a/packages/astro/test/astro-markdown-drafts.test.js
+++ /dev/null
@@ -1,44 +0,0 @@
-import { expect } from 'chai';
-import * as cheerio from 'cheerio';
-import { loadFixture } from './test-utils.js';
-
-describe('Astro Markdown with draft posts disabled', () => {
-	let fixture;
-
-	before(async () => {
-		fixture = await loadFixture({
-			root: './fixtures/astro-markdown-drafts/',
-		});
-		await fixture.build();
-	});
-	it('Does not render the draft post', async () => {
-		let renderedDraft = false;
-		try {
-			await fixture.readFile('/wip/index.html');
-			renderedDraft = true;
-		} catch (err) {
-			expect(err.code).to.equal('ENOENT');
-		}
-		expect(renderedDraft).to.equal(false, 'Rendered a draft post');
-	});
-});
-
-describe('Astro Markdown with draft posts enabled', () => {
-	let fixture;
-
-	before(async () => {
-		fixture = await loadFixture({
-			root: './fixtures/astro-markdown-drafts/',
-			markdown: {
-				drafts: true,
-			},
-		});
-		await fixture.build();
-	});
-	it('Renders the draft post', async () => {
-		const html = await fixture.readFile('/wip/index.html');
-		const $ = cheerio.load(html);
-		expect($('h1').length).to.be.ok;
-		expect($('h1').text()).to.equal('WIP');
-	});
-});
diff --git a/packages/astro/test/events.test.js b/packages/astro/test/events.test.js
index b0732a15c6..c0c6266d9f 100644
--- a/packages/astro/test/events.test.js
+++ b/packages/astro/test/events.test.js
@@ -105,7 +105,6 @@ describe('Events', () => {
 				config: 'path/to/config.mjs',
 				experimentalSsr: true,
 				experimentalIntegrations: true,
-				drafts: true,
 			};
 			const [{ payload }] = events.eventCliSession(
 				{
@@ -122,7 +121,6 @@ describe('Events', () => {
 				'config',
 				'experimentalSsr',
 				'experimentalIntegrations',
-				'drafts',
 			]);
 		});
 	});
diff --git a/packages/astro/test/featuresSupport.test.js b/packages/astro/test/featuresSupport.test.js
index c25d9d5f8f..15606b927c 100644
--- a/packages/astro/test/featuresSupport.test.js
+++ b/packages/astro/test/featuresSupport.test.js
@@ -10,14 +10,9 @@ describe('Adapter', () => {
 			fixture = await loadFixture({
 				root: './fixtures/middleware space/',
 				output: 'server',
-				build: {
-					excludeMiddleware: true,
-				},
 				adapter: testAdapter({
 					extendAdapter: {
-						supportsFeatures: {
-							edgeMiddleware: 'Unsupported',
-						},
+						supportedAstroFeatures: {},
 					},
 				}),
 			});
@@ -34,14 +29,9 @@ describe('Adapter', () => {
 			fixture = await loadFixture({
 				root: './fixtures/middleware space/',
 				output: 'server',
-				build: {
-					split: true,
-				},
 				adapter: testAdapter({
 					extendAdapter: {
-						supportsFeatures: {
-							functionPerPage: 'Unsupported',
-						},
+						supportedAstroFeatures: {},
 					},
 				}),
 			});
diff --git a/packages/astro/test/fixtures/astro-markdown-drafts/package.json b/packages/astro/test/fixtures/astro-markdown-drafts/package.json
deleted file mode 100644
index fa376d6f13..0000000000
--- a/packages/astro/test/fixtures/astro-markdown-drafts/package.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "name": "@test/astro-markdown-drafts",
-  "version": "0.0.0",
-  "private": true,
-  "dependencies": {
-    "astro": "workspace:*"
-  }
-}
diff --git a/packages/astro/test/fixtures/astro-markdown-drafts/src/pages/index.md b/packages/astro/test/fixtures/astro-markdown-drafts/src/pages/index.md
deleted file mode 100644
index 0e06444da3..0000000000
--- a/packages/astro/test/fixtures/astro-markdown-drafts/src/pages/index.md
+++ /dev/null
@@ -1,7 +0,0 @@
----
-foo: bar
----
-
-# Hello world
-
-This should be visible.
\ No newline at end of file
diff --git a/packages/astro/test/fixtures/astro-markdown-drafts/src/pages/wip.md b/packages/astro/test/fixtures/astro-markdown-drafts/src/pages/wip.md
deleted file mode 100644
index 27b8296140..0000000000
--- a/packages/astro/test/fixtures/astro-markdown-drafts/src/pages/wip.md
+++ /dev/null
@@ -1,8 +0,0 @@
----
-foo: bar
-draft: true
----
-
-# WIP
-
-This is a draft. Don't build me!
\ No newline at end of file
diff --git a/packages/astro/test/fixtures/astro-markdown/src/pages/vite-env-vars.md b/packages/astro/test/fixtures/astro-markdown/src/pages/vite-env-vars.md
index f4983af2c7..5fac527272 100644
--- a/packages/astro/test/fixtures/astro-markdown/src/pages/vite-env-vars.md
+++ b/packages/astro/test/fixtures/astro-markdown/src/pages/vite-env-vars.md
@@ -21,7 +21,7 @@ This should also work outside of code blocks:
 // src/pages/rss.xml.js
 import rss from '@astrojs/rss';
 
-export const get = () => rss({
+export const GET = () => rss({
 	// Use Vite env vars with import.meta.env
 	site: import.meta.env.SITE,
 	title: import.meta.env.TITLE,
diff --git a/packages/astro/test/fixtures/ssr-api-route/src/pages/binary.js b/packages/astro/test/fixtures/ssr-api-route/src/pages/binary.js
index 796bf4616b..b5f1b01361 100644
--- a/packages/astro/test/fixtures/ssr-api-route/src/pages/binary.js
+++ b/packages/astro/test/fixtures/ssr-api-route/src/pages/binary.js
@@ -4,7 +4,7 @@ export function GET() {
 	return new Response('ok')
 }
 
-export async function post({ request }) {
+export async function POST({ request }) {
 	const data = await request.formData();
 	const file = data.get('file');
 
diff --git a/packages/astro/test/fixtures/with-endpoint-routes/src/pages/invalid-redirect.json.ts b/packages/astro/test/fixtures/with-endpoint-routes/src/pages/invalid-redirect.json.ts
index b1b48634f1..9e8e40580e 100644
--- a/packages/astro/test/fixtures/with-endpoint-routes/src/pages/invalid-redirect.json.ts
+++ b/packages/astro/test/fixtures/with-endpoint-routes/src/pages/invalid-redirect.json.ts
@@ -1,4 +1,4 @@
-export const get = () => {
+export const GET = () => {
   return new Response(
     undefined,
     {
diff --git a/packages/astro/test/middleware.test.js b/packages/astro/test/middleware.test.js
index 8332dfe419..5b033ca4dc 100644
--- a/packages/astro/test/middleware.test.js
+++ b/packages/astro/test/middleware.test.js
@@ -277,6 +277,11 @@ describe('Middleware API in PROD mode, SSR', () => {
 				excludeMiddleware: true,
 			},
 			adapter: testAdapter({
+				extendAdapter: {
+					adapterFeatures: {
+						edgeMiddleware: true,
+					},
+				},
 				setMiddlewareEntryPoint(entryPointsOrMiddleware) {
 					middlewarePath = entryPointsOrMiddleware;
 				},
@@ -317,7 +322,9 @@ describe('Middleware with tailwind', () => {
 	});
 });
 
-describe('Middleware, split middleware option', () => {
+// `loadTestAdapterApp()` does not understand how to load the page with `functionPerRoute`
+// since there's no `entry.mjs`. Skip for now.
+describe.skip('Middleware supports functionPerRoute feature', () => {
 	/** @type {import('./test-utils').Fixture} */
 	let fixture;
 
@@ -325,10 +332,13 @@ describe('Middleware, split middleware option', () => {
 		fixture = await loadFixture({
 			root: './fixtures/middleware space/',
 			output: 'server',
-			build: {
-				excludeMiddleware: true,
-			},
-			adapter: testAdapter({}),
+			adapter: testAdapter({
+				extendAdapter: {
+					adapterFeatures: {
+						functionPerRoute: true,
+					},
+				},
+			}),
 		});
 		await fixture.build();
 	});
diff --git a/packages/astro/test/ssr-adapter-build-config.test.js b/packages/astro/test/ssr-adapter-build-config.test.js
index d739cee3cd..5d2221c312 100644
--- a/packages/astro/test/ssr-adapter-build-config.test.js
+++ b/packages/astro/test/ssr-adapter-build-config.test.js
@@ -47,6 +47,7 @@ describe('Integration buildConfig hook', () => {
 							name: 'my-ssr-adapter',
 							serverEntrypoint: '@my-ssr',
 							exports: ['manifest', 'createApp'],
+							supportedAstroFeatures: {},
 						});
 					},
 				},
diff --git a/packages/astro/test/test-adapter.js b/packages/astro/test/test-adapter.js
index 0090b6d9da..0a30583b22 100644
--- a/packages/astro/test/test-adapter.js
+++ b/packages/astro/test/test-adapter.js
@@ -77,15 +77,7 @@ export default function (
 					name: 'my-ssr-adapter',
 					serverEntrypoint: '@my-ssr',
 					exports: ['manifest', 'createApp'],
-					supportedFeatures: {
-						assets: {
-							supportKind: 'Stable',
-							isNodeCompatible: true,
-						},
-						serverOutput: 'Stable',
-						staticOutput: 'Stable',
-						hybridOutput: 'Stable',
-					},
+					supportedAstroFeatures: {},
 					...extendAdapter,
 				});
 			},
diff --git a/packages/astro/test/units/integrations/api.test.js b/packages/astro/test/units/integrations/api.test.js
index a4a76975a3..8960e662dc 100644
--- a/packages/astro/test/units/integrations/api.test.js
+++ b/packages/astro/test/units/integrations/api.test.js
@@ -106,7 +106,7 @@ describe('Astro feature map', function () {
 	it('should not support the feature when not provided', () => {
 		let result = validateSupportedFeatures(
 			'test',
-			undefined,
+			{},
 			{
 				output: 'hybrid',
 			},
diff --git a/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/collection.json.js b/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/collection.json.js
index 98ae36a582..6f389f0a72 100644
--- a/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/collection.json.js
+++ b/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/collection.json.js
@@ -2,7 +2,7 @@ import { getCollection } from 'astro:content';
 import { stringify } from 'devalue';
 import { stripAllRenderFn } from '../../utils.js';
 
-export async function get() {
+export async function GET() {
 	const posts = await getCollection('blog');
 	return {
 		body: stringify(stripAllRenderFn(posts))
diff --git a/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/entry.json.js b/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/entry.json.js
index 7899a757a9..aa24117ab8 100644
--- a/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/entry.json.js
+++ b/packages/integrations/markdoc/test/fixtures/content-collections/src/pages/entry.json.js
@@ -2,7 +2,7 @@ import { getEntryBySlug } from 'astro:content';
 import { stringify } from 'devalue';
 import { stripRenderFn } from '../../utils.js';
 
-export async function get() {
+export async function GET() {
 	const post = await getEntryBySlug('blog', 'post-1');
 	return {
 		body: stringify(stripRenderFn(post)),
diff --git a/packages/integrations/mdx/README.md b/packages/integrations/mdx/README.md
index df0458ce9e..150ada5e8d 100644
--- a/packages/integrations/mdx/README.md
+++ b/packages/integrations/mdx/README.md
@@ -83,11 +83,7 @@ You can configure how your MDX is rendered with the following options:
 
 ### Options inherited from Markdown config
 
-All [`markdown` configuration options](https://docs.astro.build/en/reference/configuration-reference/#markdown-options) except `drafts` can be configured separately in the MDX integration. This includes remark and rehype plugins, syntax highlighting, and more. Options will default to those in your Markdown config ([see the `extendMarkdownConfig` option](#extendmarkdownconfig) to modify this).
-
-:::note
-There is no separate MDX configuration for [including pages marked as draft in the build](https://docs.astro.build/en/reference/configuration-reference/#markdowndrafts). This Markdown setting will be respected by both Markdown and MDX files and cannot be overridden for MDX files specifically.
-:::
+All [`markdown` configuration options](https://docs.astro.build/en/reference/configuration-reference/#markdown-options) can be configured separately in the MDX integration. This includes remark and rehype plugins, syntax highlighting, and more. Options will default to those in your Markdown config ([see the `extendMarkdownConfig` option](#extendmarkdownconfig) to modify this).
 
 ```js
 // astro.config.mjs
diff --git a/packages/integrations/mdx/test/fixtures/mdx-frontmatter-injection/src/pages/glob.json.js b/packages/integrations/mdx/test/fixtures/mdx-frontmatter-injection/src/pages/glob.json.js
index b73cd234d7..3423bc6344 100644
--- a/packages/integrations/mdx/test/fixtures/mdx-frontmatter-injection/src/pages/glob.json.js
+++ b/packages/integrations/mdx/test/fixtures/mdx-frontmatter-injection/src/pages/glob.json.js
@@ -1,4 +1,4 @@
-export async function get() {
+export async function GET() {
 	const docs = await import.meta.glob('./*.mdx', { eager: true });
 	return {
 		body: JSON.stringify(Object.values(docs).map(doc => doc.frontmatter)),
diff --git a/packages/integrations/mdx/test/fixtures/mdx-frontmatter/src/pages/glob.json.js b/packages/integrations/mdx/test/fixtures/mdx-frontmatter/src/pages/glob.json.js
index a1d6a4ac42..9a10127b76 100644
--- a/packages/integrations/mdx/test/fixtures/mdx-frontmatter/src/pages/glob.json.js
+++ b/packages/integrations/mdx/test/fixtures/mdx-frontmatter/src/pages/glob.json.js
@@ -1,4 +1,4 @@
-export async function get() {
+export async function GET() {
 	const mdxPages = await import.meta.glob('./*.mdx', { eager: true });
 
 	return {
diff --git a/packages/integrations/mdx/test/fixtures/mdx-get-headings/src/pages/pages.json.js b/packages/integrations/mdx/test/fixtures/mdx-get-headings/src/pages/pages.json.js
index 940e5c141c..de65e50e0b 100644
--- a/packages/integrations/mdx/test/fixtures/mdx-get-headings/src/pages/pages.json.js
+++ b/packages/integrations/mdx/test/fixtures/mdx-get-headings/src/pages/pages.json.js
@@ -1,4 +1,4 @@
-export async function get() {
+export async function GET() {
 	const mdxPages = await import.meta.glob('./*.mdx', { eager: true });
 
 	return {
diff --git a/packages/integrations/mdx/test/fixtures/mdx-url-export/src/pages/pages.json.js b/packages/integrations/mdx/test/fixtures/mdx-url-export/src/pages/pages.json.js
index 36b6f7af69..93bf31be29 100644
--- a/packages/integrations/mdx/test/fixtures/mdx-url-export/src/pages/pages.json.js
+++ b/packages/integrations/mdx/test/fixtures/mdx-url-export/src/pages/pages.json.js
@@ -1,4 +1,4 @@
-export async function get() {
+export async function GET() {
 	const mdxPages = await import.meta.glob('./*.mdx', { eager: true });
 
 	return {
diff --git a/packages/integrations/mdx/test/fixtures/mdx-vite-env-vars/src/pages/frontmatter.json.js b/packages/integrations/mdx/test/fixtures/mdx-vite-env-vars/src/pages/frontmatter.json.js
index ce3cf81e5c..91654c3923 100644
--- a/packages/integrations/mdx/test/fixtures/mdx-vite-env-vars/src/pages/frontmatter.json.js
+++ b/packages/integrations/mdx/test/fixtures/mdx-vite-env-vars/src/pages/frontmatter.json.js
@@ -1,6 +1,6 @@
 import { frontmatter } from './vite-env-vars.mdx';
 
-export function get() {
+export function GET() {
 	return {
 		body: JSON.stringify(frontmatter),
 	}
diff --git a/packages/integrations/node/test/fixtures/node-middleware/src/pages/ssr.ts b/packages/integrations/node/test/fixtures/node-middleware/src/pages/ssr.ts
index 93543190f1..67f32eafae 100644
--- a/packages/integrations/node/test/fixtures/node-middleware/src/pages/ssr.ts
+++ b/packages/integrations/node/test/fixtures/node-middleware/src/pages/ssr.ts
@@ -1,4 +1,4 @@
-export async function get() {
+export async function GET() {
 	let number = Math.random();
 	return {
 		body: JSON.stringify({
diff --git a/packages/integrations/sitemap/test/fixtures/static/src/pages/endpoint.json.ts b/packages/integrations/sitemap/test/fixtures/static/src/pages/endpoint.json.ts
index 8f9fa2c90c..4b848f3398 100644
--- a/packages/integrations/sitemap/test/fixtures/static/src/pages/endpoint.json.ts
+++ b/packages/integrations/sitemap/test/fixtures/static/src/pages/endpoint.json.ts
@@ -1,4 +1,4 @@
-export async function get({}) {
+export async function GET({}) {
   return {
     body: JSON.stringify({
       name: 'Astro',
diff --git a/packages/markdown/remark/src/index.ts b/packages/markdown/remark/src/index.ts
index bf70a368d2..1430158479 100644
--- a/packages/markdown/remark/src/index.ts
+++ b/packages/markdown/remark/src/index.ts
@@ -29,7 +29,7 @@ export { remarkShiki } from './remark-shiki.js';
 export { createShikiHighlighter, replaceCssVariables, type ShikiHighlighter } from './shiki.js';
 export * from './types.js';
 
-export const markdownConfigDefaults: Omit<Required<AstroMarkdownOptions>, 'drafts'> = {
+export const markdownConfigDefaults: Required<AstroMarkdownOptions> = {
 	syntaxHighlight: 'shiki',
 	shikiConfig: {
 		langs: [],
diff --git a/packages/markdown/remark/src/types.ts b/packages/markdown/remark/src/types.ts
index b25e922713..ab5af8ed13 100644
--- a/packages/markdown/remark/src/types.ts
+++ b/packages/markdown/remark/src/types.ts
@@ -40,7 +40,6 @@ export interface ShikiConfig {
 }
 
 export interface AstroMarkdownOptions {
-	drafts?: boolean;
 	syntaxHighlight?: 'shiki' | 'prism' | false;
 	shikiConfig?: ShikiConfig;
 	remarkPlugins?: RemarkPlugins;