diff --git a/components/HooksEditor.tsx b/components/HooksEditor.tsx
index 70c4cc4..4f0fac4 100644
--- a/components/HooksEditor.tsx
+++ b/components/HooksEditor.tsx
@@ -11,6 +11,7 @@ import Container from "./Container";
 import dark from "../theme/editor/amy.json";
 import light from "../theme/editor/xcode_default.json";
 import { saveFile } from "../state/actions";
+import { apiHeaderFiles } from "../state/constants";
 import state from "../state";
 
 import EditorNavigation from "./EditorNavigation";
@@ -26,12 +27,26 @@ loader.config({
   },
 });
 
+const validateWritability = (editor: monaco.editor.IStandaloneCodeEditor) => {
+  const currPath = editor.getModel()?.uri.path;
+  if (apiHeaderFiles.find(h => currPath?.endsWith(h))) {
+    editor.updateOptions({ readOnly: true });
+  } else {
+    editor.updateOptions({ readOnly: false });
+  }
+};
+
 const HooksEditor = () => {
   const editorRef = useRef<monaco.editor.IStandaloneCodeEditor>();
   const subscriptionRef = useRef<ReconnectingWebSocket | null>(null);
   const snap = useSnapshot(state);
   const router = useRouter();
   const { theme } = useTheme();
+
+  useEffect(() => {
+    if (editorRef.current) validateWritability(editorRef.current);
+  }, [snap.active]);
+
   useEffect(() => {
     return () => {
       subscriptionRef?.current?.close();
@@ -58,9 +73,9 @@ const HooksEditor = () => {
           language={snap.files?.[snap.active]?.language}
           path={`file://work/c/${snap.files?.[snap.active]?.name}`}
           defaultValue={snap.files?.[snap.active]?.content}
-          beforeMount={(monaco) => {
+          beforeMount={monaco => {
             if (!snap.editorCtx) {
-              snap.files.forEach((file) =>
+              snap.files.forEach(file =>
                 monaco.editor.createModel(
                   file.content,
                   file.language,
@@ -85,7 +100,7 @@ const HooksEditor = () => {
               // listen when the web socket is opened
               listen({
                 webSocket: webSocket as WebSocket,
-                onConnection: (connection) => {
+                onConnection: connection => {
                   // create and start the language client
                   const languageClient = createLanguageClient(connection);
                   const disposable = languageClient.start();
@@ -124,12 +139,10 @@ const HooksEditor = () => {
                 enabled: true,
               },
             });
-            editor.addCommand(
-              monaco.KeyMod.CtrlCmd | monaco.KeyCode.KeyS,
-              () => {
-                saveFile();
-              }
-            );
+            editor.addCommand(monaco.KeyMod.CtrlCmd | monaco.KeyCode.KeyS, () => {
+              saveFile();
+            });
+            validateWritability(editor)
           }}
           theme={theme === "dark" ? "dark" : "light"}
         />
@@ -147,9 +160,7 @@ const HooksEditor = () => {
               <Box css={{ display: "inline-flex", pl: "35px" }}>
                 <ArrowBendLeftUp size={30} />
               </Box>
-              <Box
-                css={{ pl: "0px", pt: "15px", flex: 1, display: "inline-flex" }}
-              >
+              <Box css={{ pl: "0px", pt: "15px", flex: 1, display: "inline-flex" }}>
                 <Text
                   css={{
                     fontSize: "14px",
diff --git a/components/Navigation.tsx b/components/Navigation.tsx
index a58b4fc..90fe362 100644
--- a/components/Navigation.tsx
+++ b/components/Navigation.tsx
@@ -27,6 +27,7 @@ import {
   DialogTrigger,
 } from "./Dialog";
 import PanelBox from "./PanelBox";
+import { templateFileIds } from '../state/constants';
 
 const Navigation = () => {
   const router = useRouter();
@@ -82,12 +83,8 @@ const Navigation = () => {
               <Spinner />
             ) : (
               <>
-                <Heading css={{ lineHeight: 1 }}>
-                  {snap.files?.[0]?.name || "XRPL Hooks"}
-                </Heading>
-                <Text
-                  css={{ fontSize: "$xs", color: "$mauve10", lineHeight: 1 }}
-                >
+                <Heading css={{ lineHeight: 1 }}>{snap.files?.[0]?.name || "XRPL Hooks"}</Heading>
+                <Text css={{ fontSize: "$xs", color: "$mauve10", lineHeight: 1 }}>
                   {snap.files.length > 0 ? "Gist: " : "Playground"}
                   <Text css={{ color: "$mauve12" }}>
                     {snap.files.length > 0 &&
@@ -99,10 +96,7 @@ const Navigation = () => {
           </Flex>
           {router.isReady && (
             <ButtonGroup css={{ marginLeft: "auto" }}>
-              <Dialog
-                open={snap.mainModalOpen}
-                onOpenChange={(open) => (state.mainModalOpen = open)}
-              >
+              <Dialog open={snap.mainModalOpen} onOpenChange={open => (state.mainModalOpen = open)}>
                 <DialogTrigger asChild>
                   <Button outline>
                     <FolderOpen size="15px" />
@@ -163,12 +157,9 @@ const Navigation = () => {
                             mb: "$7",
                           }}
                         >
-                          Hooks add smart contract functionality to the XRP
-                          Ledger.
+                          Hooks add smart contract functionality to the XRP Ledger.
                         </Text>
-                        <Flex
-                          css={{ flexDirection: "column", gap: "$2", mt: "$2" }}
-                        >
+                        <Flex css={{ flexDirection: "column", gap: "$2", mt: "$2" }}>
                           <Text
                             css={{
                               display: "inline-flex",
@@ -253,43 +244,29 @@ const Navigation = () => {
                         },
                       }}
                     >
-                      <PanelBox
-                        as="a"
-                        href="/develop/be088224fb37c0075e84491da0e602c1"
-                      >
+                      <PanelBox as="a" href={`/develop/${templateFileIds.starter}`}>
                         <Heading>Starter</Heading>
-                        <Text>
-                          Just an empty starter with essential imports
-                        </Text>
+                        <Text>Just an empty starter with essential imports</Text>
                       </PanelBox>
-                      <PanelBox
-                        as="a"
-                        href="/develop/be088224fb37c0075e84491da0e602c1"
-                      >
+                      <PanelBox as="a" href={`/develop/${templateFileIds.starter}`}>
                         <Heading>Firewall</Heading>
-                        <Text>
-                          This Hook essentially checks a blacklist of accounts
-                        </Text>
+                        <Text>This Hook essentially checks a blacklist of accounts</Text>
                       </PanelBox>
-                      <PanelBox
-                        as="a"
-                        href="/develop/be088224fb37c0075e84491da0e602c1"
-                      >
+                      <PanelBox as="a" href={`/develop/${templateFileIds.accept}`}>
                         <Heading>Accept</Heading>
-                        <Text>
-                          This hook just accepts any transaction coming through
-                          it
-                        </Text>
+                        <Text>This hook just accepts any transaction coming through it</Text>
                       </PanelBox>
-                      <PanelBox
-                        as="a"
-                        href="/develop/be088224fb37c0075e84491da0e602c1"
-                      >
-                        <Heading>Accept</Heading>
-                        <Text>
-                          This hook just accepts any transaction coming through
-                          it
-                        </Text>
+                      <PanelBox as="a" href={`/develop/${templateFileIds.notary}`}>
+                        <Heading>Notary</Heading>
+                        <Text>Collecting signatures for multi-sign transactions</Text>
+                      </PanelBox>
+                      <PanelBox as="a" href={`/develop/${templateFileIds.carbon}`}>
+                        <Heading>Carbon</Heading>
+                        <Text>Send a percentage of sum to an address</Text>
+                      </PanelBox>
+                      <PanelBox as="a" href={`/develop/${templateFileIds.peggy}`}>
+                        <Heading>Peggy</Heading>
+                        <Text>An oracle based stabe coin hook</Text>
                       </PanelBox>
                     </Flex>
                   </Flex>
@@ -336,42 +313,18 @@ const Navigation = () => {
             }}
           >
             <ButtonGroup>
-              <Link
-                href={gistId ? `/develop/${gistId}` : "/develop"}
-                passHref
-                shallow
-              >
-                <Button
-                  as="a"
-                  outline={!router.pathname.includes("/develop")}
-                  uppercase
-                >
+              <Link href={gistId ? `/develop/${gistId}` : "/develop"} passHref shallow>
+                <Button as="a" outline={!router.pathname.includes("/develop")} uppercase>
                   Develop
                 </Button>
               </Link>
-              <Link
-                href={gistId ? `/deploy/${gistId}` : "/deploy"}
-                passHref
-                shallow
-              >
-                <Button
-                  as="a"
-                  outline={!router.pathname.includes("/deploy")}
-                  uppercase
-                >
+              <Link href={gistId ? `/deploy/${gistId}` : "/deploy"} passHref shallow>
+                <Button as="a" outline={!router.pathname.includes("/deploy")} uppercase>
                   Deploy
                 </Button>
               </Link>
-              <Link
-                href={gistId ? `/test/${gistId}` : "/test"}
-                passHref
-                shallow
-              >
-                <Button
-                  as="a"
-                  outline={!router.pathname.includes("/test")}
-                  uppercase
-                >
+              <Link href={gistId ? `/test/${gistId}` : "/test"} passHref shallow>
+                <Button as="a" outline={!router.pathname.includes("/test")} uppercase>
                   Test
                 </Button>
               </Link>
diff --git a/state/actions/fetchFiles.ts b/state/actions/fetchFiles.ts
index a97b5c4..e219b96 100644
--- a/state/actions/fetchFiles.ts
+++ b/state/actions/fetchFiles.ts
@@ -1,6 +1,8 @@
 import { Octokit } from "@octokit/core";
 import Router from "next/router";
 import state from '../index';
+import { templateFileIds } from '../constants';
+
 
 const octokit = new Octokit();
 
@@ -17,6 +19,17 @@ export const fetchFiles = (gistId: string) => {
 
     octokit
       .request("GET /gists/{gist_id}", { gist_id: gistId })
+      .then(res => {
+        if (!Object.values(templateFileIds).includes(gistId)) {
+          return res
+        }
+        // in case of templates, fetch header file(s) and append to res
+        return octokit.request("GET /gists/{gist_id}", { gist_id: templateFileIds.headers }).then(({ data: { files: headerFiles } }) => {
+          const files = { ...res.data.files, ...headerFiles }
+          res.data.files = files
+          return res
+        })
+      })
       .then((res) => {
         if (res.data.files && Object.keys(res.data.files).length > 0) {
           const files = Object.keys(res.data.files).map((filename) => ({
@@ -44,6 +57,7 @@ export const fetchFiles = (gistId: string) => {
         state.loading = false;
       })
       .catch((err) => {
+        // console.error(err)
         state.loading = false;
         state.logs.push({
           type: "error",
diff --git a/state/constants/index.ts b/state/constants/index.ts
new file mode 100644
index 0000000..671fb33
--- /dev/null
+++ b/state/constants/index.ts
@@ -0,0 +1 @@
+export * from './templates'
\ No newline at end of file
diff --git a/state/constants/templates.ts b/state/constants/templates.ts
new file mode 100644
index 0000000..0bdc2ae
--- /dev/null
+++ b/state/constants/templates.ts
@@ -0,0 +1,11 @@
+export const templateFileIds = {
+    'starter': '1d14e51e2e02dc0a508cb0733767a914', // TODO currently same as accept
+    'accept': '1d14e51e2e02dc0a508cb0733767a914',
+    'firewall': 'bcd6d0c0fcbe52545ddb802481ff9d26',
+    'notary': 'a789c75f591eeab7932fd702ed8cf9ea',
+    'carbon': '43925143fa19735d8c6505c34d3a6a47',
+    'peggy': 'ceaf352e2a65741341033ab7ef05c448',
+    'headers': '9b448e8a55fab11ef5d1274cb59f9cf3'
+}
+
+export const apiHeaderFiles = ['hookapi.h', 'sfcodes.h', 'hookmacro.h']