diff --git a/app.ts b/app.ts
index 2814743..d4850c6 100644
--- a/app.ts
+++ b/app.ts
@@ -1,19 +1,28 @@
-import { Application, Router } from "https://deno.land/x/oak@v12.1.0/mod.ts";
+import { Application, Router, HttpError, isHttpError } from "https://deno.land/x/oak@v12.1.0/mod.ts";
 import {
     searchRepositoryWithTopic,
     getRepositoryTags,
-    getRepositoryContent
+    getRepositoryContent,
+    GiteaOption
 } from "./gitea.ts";
 import { ContentsResponse } from "./gitea_api.d.ts";
 import { Command } from "https://deno.land/x/cliffy@v0.25.7/mod.ts";
 
-// import { load } from "https://deno.land/std@0.181.0/dotenv/mod.ts";
-// const env = await load();
+import { load } from "https://deno.land/std@0.191.0/dotenv/mod.ts";
+const env = await load();
+
+function getGiteaOptions(): GiteaOption| undefined{
+    const token = env.TOKEN;
+    if (token === undefined){
+        return undefined
+    }
+    return {token: token};
+}
 
 const app = new Application();
 const router = new Router();
 
-const RelativeTopic = "denolib";
+const RelativeTopic = env.tag ?? "denolib";
 
 export interface CompletionList {
     /** The list (or partial list) of completion items. */
@@ -58,7 +67,8 @@ router.get("/.well-known/deno-import-intellisense.json", (ctx) => {
 router.get("/packages/:package", async (ctx) => {
     const packageName = ctx.params.package;
     console.log(`searchRepositoryWithTopic: ${packageName}`);
-    const repositories = await searchRepositoryWithTopic(RelativeTopic);
+    const options = getGiteaOptions();
+    const repositories = await searchRepositoryWithTopic(RelativeTopic, options);
     const repo_name = repositories.data?.map((repo) => repo.full_name)
         .filter(x => x !== undefined)
         .map(x=> x?.replace("/","@")) ?? [];
@@ -75,7 +85,8 @@ router.get("/packages/:package/versions", async (ctx) => {
     const packageName = ctx.params.package;
     const [owner, repo] = packageName.split("@");
     console.log(`getTags: owner: ${owner}, repo: ${repo}`);
-    const tags = await getRepositoryTags(owner, repo);
+    const options = getGiteaOptions();
+    const tags = await getRepositoryTags(owner, repo, options);
     const candidate = ["main", ...tags.map((tag) => tag.name) as string[]]
     const completionList: CompletionList = {
         items: candidate,
@@ -92,7 +103,8 @@ router.get("/packages/:package/:version/paths/:path*", async (ctx) => {
     const path = ctx.params.path;
     const [owner, repo] = packageName.split("@");
     console.log(`getFilesEntry: owner: ${owner}, repo: ${repo}, path: ${path}, version: ${version}`);
-    const entries = await getRepositoryContent(owner, repo, path ?? "", version) as ContentsResponse[];
+    const options = getGiteaOptions();
+    const entries = await getRepositoryContent(owner, repo, path ?? "", version, options) as ContentsResponse[];
     const completionList: CompletionList = {
         items: entries.map((entry) => entry.name) as string[],
         isIncomplete: false,
@@ -108,7 +120,8 @@ router.get("/:package([a-z0-9_]*@[a-z0-9_]*)/:version?/:path*", async (ctx) => {
     const version = ctx.params.version;
     const path = ctx.params.path;
     console.log(`getFiles: owner: ${owner}, repo: ${repo}, path: ${path}, version: ${version}`);
-    const entries = await getRepositoryContent(owner, repo, path ?? "", version);
+    const options = getGiteaOptions();
+    const entries = await getRepositoryContent(owner, repo, path ?? "", version, options);
     if (entries instanceof Array) {
         ctx.response.type = "application/json";
         ctx.response.body = entries;
@@ -124,6 +137,22 @@ router.get("/:package([a-z0-9_]*@[a-z0-9_]*)/:version?/:path*", async (ctx) => {
 });
 
 
+app.use(async (ctx, next) => {
+    try{
+        await next();
+    }
+    catch (err) {
+        if (isHttpError(err)) {
+            console.log(err);
+            ctx.response.status = err.status;
+            const { message, status, stack } = err;
+            ctx.response.body = { message, status, stack };
+        }
+        else {
+            throw err;
+        }
+    }
+});
 app.use(router.routes());
 app.use(router.allowedMethods());
 
diff --git a/gitea.ts b/gitea.ts
index 1fa7b43..00438b4 100644
--- a/gitea.ts
+++ b/gitea.ts
@@ -2,29 +2,43 @@ import { SearchResults, Tag, ContentsResponse } from "./gitea_api.d.ts";
 
 const ENDPOINT_URL = "https://git.prelude.duckdns.org/api/v1/";
 
-export async function searchRepositoryWithTopic(topic: string): Promise<SearchResults> {
+export interface GiteaOption{
+    token: string;
+}
+
+async function fetchFromGitea(url: string | URL, giteaOption? :GiteaOption): Promise<any> {
+    const headers = new Headers();
+    if (giteaOption) {
+        headers.append("Authorization", "token " + giteaOption.token);
+    }
+    const response = await fetch(url, {
+        headers: headers
+    }
+    );
+    const data = await response.json();
+    return data;
+}
+
+export async function searchRepositoryWithTopic(topic: string, giteaOption? :GiteaOption): Promise<SearchResults> {
     const url = new URL(ENDPOINT_URL+ "repos/search");
     url.searchParams.append("q", topic);
     url.searchParams.append("topic", "true");
-    const response = await fetch(url);
-    const data = await response.json();
+    const data = await fetchFromGitea(url,giteaOption);
     return data;
 }
 
 export async function getRepositoryTags(owner:string,
-    repo:string): Promise<Tag[]>{
+    repo:string, giteaOption? :GiteaOption): Promise<Tag[]>{
     const url = new URL(ENDPOINT_URL+ "repos/"+owner+"/"+repo+"/tags");
-    const response = await fetch(url);
-    const data = await response.json();
+    const data = await fetchFromGitea(url,giteaOption);
     return data;
 }
 
 export async function getRepositoryContent(owner:string,
-    repo:string, path:string, ref:string): Promise<ContentsResponse[] | ContentsResponse>{
+    repo:string, path:string, ref:string, giteaOption? :GiteaOption): Promise<ContentsResponse[] | ContentsResponse>{
     const url = new URL(ENDPOINT_URL+ "repos/"+owner+"/"+repo+"/contents/"+path);
     url.searchParams.append("ref", ref);
-    const response = await fetch(url);
-    const data = await response.json();
+    const data = await fetchFromGitea(url,giteaOption);
     return data;
 }