diff --git a/.changeset/soft-turtles-study.md b/.changeset/soft-turtles-study.md
new file mode 100644
index 000000000..54f5dcfa2
--- /dev/null
+++ b/.changeset/soft-turtles-study.md
@@ -0,0 +1,5 @@
+---
+"create-eth": patch
+---
+
+Support for external extensions with -e
diff --git a/src/config.ts b/src/config.ts
index a6f281e99..e66d40ac9 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,4 +1,4 @@
-import { Config, typedQuestion } from "./types";
+import { Config, ExternalExtension, typedQuestion } from "./types";
 
 const config: Config = {
   questions: [
@@ -11,4 +11,12 @@ const config: Config = {
     }),
   ],
 };
-export default config;
+
+const CURATED_EXTENSIONS: { [key: string]: ExternalExtension } = {
+  subgraph: {
+    repository: "https://github.com/scaffold-eth/create-eth-extensions",
+    branch: "subgraph",
+  }
+}
+
+export { config, CURATED_EXTENSIONS };
diff --git a/src/tasks/copy-template-files.ts b/src/tasks/copy-template-files.ts
index a3fd15d15..240f74d5a 100644
--- a/src/tasks/copy-template-files.ts
+++ b/src/tasks/copy-template-files.ts
@@ -10,7 +10,7 @@ import ncp from "ncp";
 import path from "path";
 import { promisify } from "util";
 import link from "../utils/link";
-import {getArgumentFromExternalExtensionOption} from "../utils/external-extensions";
+import { getArgumentFromExternalExtensionOption } from "../utils/external-extensions";
 
 const EXTERNAL_EXTENSION_TMP_FOLDER = "tmp-external-extension";
 const copy = promisify(ncp);
diff --git a/src/types.ts b/src/types.ts
index 88bd28aa9..b7ff84910 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -7,10 +7,12 @@ export type RawOptions = {
   install: boolean | null;
   dev: boolean;
   extensions: Extension[] | null;
-  externalExtension: {
-    repository: string;
-    branch?: string | null;
-  } | null;
+  externalExtension: ExternalExtension | null;
+};
+
+export type ExternalExtension = {
+  repository: string;
+  branch?: string | null;
 };
 
 type NonNullableRawOptions = {
diff --git a/src/utils/external-extensions.ts b/src/utils/external-extensions.ts
index 5734ddd06..cef21bcac 100644
--- a/src/utils/external-extensions.ts
+++ b/src/utils/external-extensions.ts
@@ -1,8 +1,13 @@
 import { RawOptions } from "../types";
+import { CURATED_EXTENSIONS } from "../config";
 
 // Gets the data from the argument passed to the `--extension` option.
 // e.g. owner/project:branch => { githubBranchUrl, githubUrl, branch, owner, project }
 export const getDataFromExternalExtensionArgument = (externalExtension: string) => {
+  if (CURATED_EXTENSIONS[externalExtension]) {
+    externalExtension = getArgumentFromExternalExtensionOption(CURATED_EXTENSIONS[externalExtension]);
+  }
+
   // Check format: owner/project:branch (branch is optional)
   const regex = /^[^/]+\/[^/]+(:[^/]+)?$/;
   if (!regex.test(externalExtension)) {
diff --git a/src/utils/parse-arguments-into-options.ts b/src/utils/parse-arguments-into-options.ts
index 4c6802fa5..5edc89767 100644
--- a/src/utils/parse-arguments-into-options.ts
+++ b/src/utils/parse-arguments-into-options.ts
@@ -3,6 +3,7 @@ import arg from "arg";
 import * as https from "https";
 import { getDataFromExternalExtensionArgument } from "./external-extensions";
 import chalk from "chalk";
+import { CURATED_EXTENSIONS } from "../config";
 
 const validateTemplate = async (
   template: string
@@ -64,7 +65,7 @@ export async function parseArgumentsIntoOptions(
     ? await validateTemplate(args["--extension"])
     : null;
 
-  if (extension) {
+  if (extension && !CURATED_EXTENSIONS[args["--extension"] as string]) {
     console.log(chalk.yellow(` You are using a third-party extension. Make sure you trust the source of ${chalk.yellow.bold(extension.repository)}\n`));
   }
 
diff --git a/src/utils/prompt-for-missing-options.ts b/src/utils/prompt-for-missing-options.ts
index 7402d0848..630e80962 100644
--- a/src/utils/prompt-for-missing-options.ts
+++ b/src/utils/prompt-for-missing-options.ts
@@ -1,4 +1,4 @@
-import config from "../config";
+import { config } from "../config";
 import {
   Extension,
   ExtensionDescriptor,