diff --git a/package.json b/package.json
index 30828e58..83e93b4d 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,8 @@
     "packages/*"
   ],
   "scripts": {
-    "build:aspida": "yarn workspace aspida build",
+    "dev:aspida": "yarn build:aspida && cd packages/aspida && node bin/index.js --build",
+    "build:aspida": "cd packages/aspida && rimraf dist && tsc --project tsconfig.build.json",
     "build:aspida-axios": "yarn workspace @aspida/axios build",
     "build:aspida-fetch": "yarn workspace @aspida/fetch build",
     "build:aspida-ky": "yarn workspace @aspida/ky build",
@@ -12,7 +13,6 @@
     "release": "standard-version --skip.tag",
     "lint": "eslint --ext .js,.ts --ignore-path .gitignore .",
     "lint:fix": "npm run lint -- --fix",
-    "snapshot:aspida": "ts-node packages/aspida/__tests__/utils/updateSnapshot",
     "snapshot:mock": "ts-node packages/axios-mock-server/__tests__/utils/updateSnapshot",
     "test": "jest",
     "test:watch": "npm test -- --watch",
@@ -23,6 +23,7 @@
     "@commitlint/config-conventional": "^8.3.4",
     "@types/jest": "^24.0.25",
     "@types/minimist": "^1.2.0",
+    "@types/rimraf": "^2.0.3",
     "@typescript-eslint/eslint-plugin": "2.15.0",
     "@typescript-eslint/parser": "^2.15.0",
     "axios": "^0.19.0",
diff --git a/packages/aspida/__tests__/apis/$api.ts b/packages/aspida/__tests__/apis/$api.ts
index 6d93db6f..b2073999 100644
--- a/packages/aspida/__tests__/apis/$api.ts
+++ b/packages/aspida/__tests__/apis/$api.ts
@@ -12,7 +12,7 @@ import { Methods as Methods6 } from './v1.1/users/_userId@number'
 import { Methods as Methods7 } from './v2.0/index'
 
 const api = (client: AspidaClient, baseURL?: string) => {
-  const prefix = (baseURL === undefined ? 'https://example.com' : baseURL).replace(/\/$/, '')
+  const prefix = (baseURL === undefined ? '' : baseURL).replace(/\/$/, '')
 
   return {
     v1_1: {
diff --git a/packages/aspida/__tests__/index.spec.ts b/packages/aspida/__tests__/index.spec.ts
index bb23e626..e374f943 100644
--- a/packages/aspida/__tests__/index.spec.ts
+++ b/packages/aspida/__tests__/index.spec.ts
@@ -3,7 +3,6 @@ import build from '~/aspida/src/buildTemplate'
 
 describe('cli test', () => {
   test('main', () => {
-    const baseurl = 'https://example.com'
     const paths = [
       {
         input: 'packages/aspida/__tests__/apis',
@@ -26,7 +25,7 @@ describe('cli test', () => {
     paths.forEach(({ input, resultDirPath }) => {
       const resultFilePath = `${resultDirPath}/$api.ts`
       const result = fs.readFileSync(resultFilePath, 'utf8')
-      const { text, filePath } = build(input, baseurl)
+      const { text, filePath } = build(input)
 
       expect(text).toBe(result)
       expect(filePath).toBe(resultFilePath)
diff --git a/packages/aspida/__tests__/utils/updateSnapshot.ts b/packages/aspida/__tests__/utils/updateSnapshot.ts
deleted file mode 100644
index 107036ef..00000000
--- a/packages/aspida/__tests__/utils/updateSnapshot.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import build from '../../src/buildTemplate'
-import write from '../../src/writeRouteFile'
-
-const input = 'packages/aspida/__tests__/apis'
-const baseurl = 'https://example.com'
-
-write(build(input, baseurl))
diff --git a/packages/aspida/aspida.config.js b/packages/aspida/aspida.config.js
new file mode 100644
index 00000000..584bf6c4
--- /dev/null
+++ b/packages/aspida/aspida.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  aspida: { input: '__tests__/apis' }
+}
diff --git a/packages/aspida/package.json b/packages/aspida/package.json
index 1b844731..27dd4ae8 100644
--- a/packages/aspida/package.json
+++ b/packages/aspida/package.json
@@ -23,9 +23,6 @@
     "ajax",
     "promise"
   ],
-  "scripts": {
-    "build": "rimraf dist && tsc --project tsconfig.build.json"
-  },
   "dependencies": {
     "chokidar": "^3.3.1",
     "minimist": "^1.2.0",
diff --git a/packages/aspida/src/cli.ts b/packages/aspida/src/cli.ts
index 2f410ca2..0a4b180b 100644
--- a/packages/aspida/src/cli.ts
+++ b/packages/aspida/src/cli.ts
@@ -1,7 +1,6 @@
 import fs from 'fs'
 import minimist from 'minimist'
 import getConfig, { Config } from './getConfig'
-import read from './getInputs'
 import write from './writeRouteFile'
 import watch from './watchInputDir'
 import { Build, Watch, CommandToBuild } from './cli/build'
@@ -15,12 +14,10 @@ const options: minimist.Opts = {
 
 const getBuildCommandFactory = (config: Config) =>
   CommandToBuild.getFactory(config, {
-    read,
     write,
     watch,
-    remove(filePath: string, callback: () => void) {
-      fs.unlink(filePath, callback)
-    }
+    read: ({ input }) => (Array.isArray(input) ? input : [input]),
+    remove: (filePath: string, callback: () => void) => fs.unlink(filePath, callback)
   })
 
 export const run = (args: string[]) => {
diff --git a/packages/aspida/src/cli/build.ts b/packages/aspida/src/cli/build.ts
index fe895e14..ffda05ca 100644
--- a/packages/aspida/src/cli/build.ts
+++ b/packages/aspida/src/cli/build.ts
@@ -20,7 +20,7 @@ export class CommandToBuild implements Command {
   ) {}
 
   exec() {
-    this.io.read(this.config.input).forEach(input => {
+    this.io.read(this.config).forEach(input => {
       this.command.run(input, this.io)
     })
   }
@@ -31,7 +31,7 @@ interface BuildCommand {
 }
 
 export interface BuildIO {
-  read(input?: string | string[]): string[]
+  read(config: Config): string[]
   write(template: Template): void
   remove(filePath: string, callback: () => void): void
   watch(input: string, callback: () => void): void
@@ -41,7 +41,7 @@ export class Build implements BuildCommand {
   run(input: string, io: BuildIO): void {
     const template = build(input)
 
-    io.write(template)
+    io.remove(template.filePath, () => io.write(template))
   }
 }
 
@@ -51,11 +51,6 @@ export class Watch implements BuildCommand {
 
   run(input: string, io: BuildIO): void {
     this.build.run(input, io)
-
-    io.watch(input, () => {
-      const result = build(input)
-
-      io.remove(result.filePath, () => io.write(result))
-    })
+    io.watch(input, () => this.build.run(input, io))
   }
 }
diff --git a/packages/aspida/src/getConfig.ts b/packages/aspida/src/getConfig.ts
index 4b5b90c7..f2c2ba2a 100644
--- a/packages/aspida/src/getConfig.ts
+++ b/packages/aspida/src/getConfig.ts
@@ -1,14 +1,11 @@
 import fs from 'fs'
+import path from 'path'
 
-export type Config = {
-  input?: string | string[]
-}
+export type Config = { input: string | string[] }
 
-export const apiFileRegExp = /\/\$[^/]+\.(js|ts)$/
+const defaultConfig: Config = { input: 'apis' }
 
-export const defaultConfig = {
-  input: 'apis'
-}
-
-export default (rcFilePath = '.aspidarc'): Config =>
-  fs.existsSync(rcFilePath) ? JSON.parse(fs.readFileSync(rcFilePath, 'utf8')) : {}
+export default (configPath = 'aspida.config.js'): Config =>
+  (fs.existsSync(configPath) &&
+    require(path.join(process.cwd(), configPath))[require('../package.json').name]) ||
+  defaultConfig
diff --git a/packages/aspida/src/getInputs.ts b/packages/aspida/src/getInputs.ts
deleted file mode 100644
index 7459a702..00000000
--- a/packages/aspida/src/getInputs.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-import { defaultConfig } from './getConfig'
-
-export default (input?: string | string[]) =>
-  Array.isArray(input) ? input : [input || defaultConfig.input]
diff --git a/packages/aspida/src/watchInputDir.ts b/packages/aspida/src/watchInputDir.ts
index ff3d4f70..38ecab42 100644
--- a/packages/aspida/src/watchInputDir.ts
+++ b/packages/aspida/src/watchInputDir.ts
@@ -1,6 +1,5 @@
 import chokidar from 'chokidar'
-import { apiFileRegExp } from './getConfig'
 
 export default (input: string, callback: (...args: any) => void) => {
-  chokidar.watch(input, { ignoreInitial: true, ignored: apiFileRegExp }).on('all', callback)
+  chokidar.watch(input, { ignoreInitial: true, ignored: /\/\$[^/]+\.(js|ts)$/ }).on('all', callback)
 }