diff --git a/.env.example b/.env.example
index 0be8cfa8..f2d82af8 100644
--- a/.env.example
+++ b/.env.example
@@ -3,3 +3,6 @@ NEXT_PUBLIC_API_URL=https://api.skip.money
 
 # development API
 # NEXT_PUBLIC_API_URL=https://solve-dev.skip.money
+
+POLKACHU_USER=
+POLKACHU_PASSWORD=
diff --git a/.eslintrc.json b/.eslintrc.json
index d3d7b492..c7814194 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -2,15 +2,25 @@
   "extends": [
     "next/core-web-vitals",
     "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "prettier",
-    "plugin:@tanstack/eslint-plugin-query/recommended"
+    "plugin:@tanstack/eslint-plugin-query/recommended",
+    "plugin:prettier/recommended"
   ],
-  "plugins": ["@typescript-eslint", "prettier", "simple-import-sort"],
-  "parser": "@typescript-eslint/parser",
+  "plugins": ["simple-import-sort"],
   "rules": {
-    "simple-import-sort/imports": "warn",
+    "@next/next/no-img-element": "off",
     "simple-import-sort/exports": "warn",
-    "@next/next/no-img-element": "off"
-  }
+    "simple-import-sort/imports": "warn"
+  },
+  "overrides": [
+    {
+      "files": ["*.ts", "*.tsx"],
+      "extends": [
+        "plugin:@typescript-eslint/recommended",
+        "plugin:prettier/recommended"
+      ],
+      "parser": "@typescript-eslint/parser",
+      "plugins": ["@typescript-eslint"]
+    }
+  ],
+  "root": true
 }
diff --git a/.gitignore b/.gitignore
index 2782dfc9..a4347a26 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,47 +1,24 @@
-# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-
+.DS_Store
 .env*
-!.env.example
-
-src/chains/
-tests/downloads/
-
-# dependencies
-/node_modules
-/.pnp
+.next
+.pnp
 .pnp.js
-
-# testing
-/coverage
-
-# next.js
-/.next/
-/out/
-
-# production
-/build
-
-# misc
-.DS_Store
-*.pem
-
-# debug
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# local env files
-.env*.local
-
-# vercel
+.sentryclirc
+.turbo
 .vercel
-
-# typescript
+.vscode
+*.log
+*.pem
 *.tsbuildinfo
+build
+coverage
 next-env.d.ts
-/test-results/
-/playwright-report/
-/playwright/.cache/
+node_modules
+out
+playwright-report
+playwright/.cache/
+src/chains/
+test-results/
+tests/downloads/
 
-# Sentry Config File
-.sentryclirc
+!.env.example
diff --git a/env.d.ts b/env.d.ts
index af597ce2..9097b241 100644
--- a/env.d.ts
+++ b/env.d.ts
@@ -2,5 +2,7 @@ declare namespace NodeJS {
   interface ProcessEnv {
     readonly APP_URL?: string;
     readonly NEXT_PUBLIC_API_URL?: string;
+    readonly POLKACHU_USER?: string;
+    readonly POLKACHU_PASSWORD?: string;
   }
 }
diff --git a/jsconfig.json b/jsconfig.json
new file mode 100644
index 00000000..fc8520e7
--- /dev/null
+++ b/jsconfig.json
@@ -0,0 +1,3 @@
+{
+  "extends": "./tsconfig.json"
+}
diff --git a/next.config.js b/next.config.js
index f9ad4743..bf552181 100644
--- a/next.config.js
+++ b/next.config.js
@@ -1,4 +1,5 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
+/// <reference path="./env.d.ts" />
+/// <reference path="./vercel.d.ts" />
 
 const APP_URL =
   process.env.APP_URL ||
@@ -48,6 +49,10 @@ let nextConfig = {
           "uuid",
         ]
       : [],
+  webpack: (config, { dev, isServer }) => {
+    if (dev && isServer) checkEnv();
+    return config;
+  },
 };
 
 /** @see https://docs.sentry.io/platforms/javascript/guides/nextjs */
@@ -79,3 +84,22 @@ const sentryOptions = {
 nextConfig = withSentryConfig(nextConfig, sentryWebpackConfig, sentryOptions);
 
 module.exports = nextConfig;
+
+function checkEnv() {
+  if (checkEnv.once) return;
+
+  const log = require("next/dist/build/output/log");
+
+  if (!process.env.NEXT_PUBLIC_API_URL) {
+    log.warn(
+      'env NEXT_PUBLIC_API_URL is not set, using SKIP_API_URL from "@skip-router/core"',
+    );
+  }
+  if (!process.env.POLKACHU_USER || !process.env.POLKACHU_PASSWORD) {
+    log.warn(
+      "env POLKACHU_USER or POLKACHU_PASSWORD is not set, /nodes/[chainID] will not work",
+    );
+  }
+
+  checkEnv.once = true;
+}
diff --git a/package.json b/package.json
index 023552f4..d3ba8862 100644
--- a/package.json
+++ b/package.json
@@ -3,11 +3,11 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
-    "dev": "next dev",
     "build": "next build",
+    "dev": "next dev",
+    "lint": "next lint",
     "postinstall": "git submodule init && git submodule update --remote && tsx ./src/scripts/codegen.ts",
     "start": "next start",
-    "lint": "next lint",
     "test": "jest",
     "test:e2e": "playwright test --project=chromium"
   },
diff --git a/tsconfig.json b/tsconfig.json
index 3e52c048..24f970dc 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,34 +1,35 @@
 {
   "compilerOptions": {
-    "target": "es2020",
-    "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
-    "skipLibCheck": true,
-    "strict": true,
-    "forceConsistentCasingInFileNames": true,
-    "noEmit": true,
     "esModuleInterop": true,
-    "module": "esnext",
-    "moduleResolution": "node",
-    "resolveJsonModule": true,
+    "forceConsistentCasingInFileNames": true,
+    "incremental": true,
     "isolatedModules": true,
     "jsx": "preserve",
-    "incremental": true,
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "module": "esnext",
+    "moduleResolution": "node",
+    "noEmit": true,
+    "paths": {
+      "@/*": ["./src/*"]
+    },
     "plugins": [
       {
         "name": "next"
       }
     ],
-    "paths": {
-      "@/*": ["./src/*"]
-    }
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "target": "es2020"
   },
+  "exclude": ["node_modules"],
   "include": [
     "next-env.d.ts",
-    "**/*.ts",
-    "**/*.tsx",
     ".next/types/**/*.ts",
-    "window.d.ts"
-  ],
-  "exclude": ["node_modules"]
+    "env.d.ts",
+    "window.d.ts",
+    "**/*.ts",
+    "**/*.tsx"
+  ]
 }