diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..7ffd47f
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,14 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{py}]
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.github/.git-pr-release b/.github/.git-pr-release
new file mode 100644
index 0000000..d1f36c1
--- /dev/null
+++ b/.github/.git-pr-release
@@ -0,0 +1,4 @@
+Release <%= Time.now %>
+<% pull_requests.each do |pr| -%>
+- #<%= pr.number %> <%= pr.title %> <%= pr.mention %>
+<% end -%>
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 0000000..974115c
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1 @@
+* @Mameta29 @SeiyaKobayashi
diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
new file mode 100644
index 0000000..7c74e51
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -0,0 +1,20 @@
+---
+name: Bug Report
+about: Create a bug report
+title: ''
+labels: 'bug'
+assignees: ''
+---
+
+<!-- Edit issue title -->
+
+## 🐛 Description <!-- Provide a detailed description (including the expected behavior) of the bug -->
+
+
+
+## 🔍 How to Reproduce <!-- Describe how to reproduce the bug -->
+
+
+
+## 📚 References <!-- Provide a list of external links related to this issue (if any) -->
+
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
new file mode 100644
index 0000000..3ba13e0
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -0,0 +1 @@
+blank_issues_enabled: false
diff --git a/.github/ISSUE_TEMPLATE/feature_request.md b/.github/ISSUE_TEMPLATE/feature_request.md
new file mode 100644
index 0000000..5744726
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -0,0 +1,24 @@
+---
+name: Feature Request
+about: Submit a feature request
+title: ''
+labels: ['feature request']
+assignees: ''
+---
+
+<!-- Edit issue title -->
+
+## 🌈 Overview <!-- Write a brief overview of the feature -->
+
+
+
+## ❓ Motivation <!-- Summarize motivation of the feature request. Why should our SDK have this feature? -->
+
+
+
+## 🎨 Description <!-- Provide a detailed description of the feature -->
+
+
+
+## 📚 References <!-- Provide a list of external links related to this issue (if any) -->
+
diff --git a/.github/ISSUE_TEMPLATE/task.md b/.github/ISSUE_TEMPLATE/task.md
new file mode 100644
index 0000000..772be00
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/task.md
@@ -0,0 +1,24 @@
+---
+name: Task
+about: Create a new task
+title: ''
+labels: ['task']
+assignees: ''
+---
+
+<!-- Edit issue title -->
+
+## 📝 Overview <!-- Write a brief overview of the task -->
+
+
+
+## 🖋 Details <!-- Provide detailed instructions of the task -->
+
+
+
+## 🍭 Sub-Tasks <!-- Divide the task into sub-tasks (if appropriate) -->
+
+- 
+
+## 📚 References <!-- Provide a list of external links related to this issue (if any) -->
+
diff --git a/.github/actions/.gitkeep b/.github/actions/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644
index 0000000..e57d9f0
--- /dev/null
+++ b/.github/pull_request_template.md
@@ -0,0 +1,16 @@
+<!-- Edit PR title -->
+
+## 🌈 Overview <!-- Write a brief overview of the changes -->
+
+
+
+## 🎯 Issues <!-- Provide a list of related issues -->
+
+- 
+
+## 🎨 Details <!-- Provide a detailed description of the changes -->
+
+
+
+## 📚 References <!-- Provide a list of external links related to this PR (if any) -->
+
diff --git a/.github/release-drafter.yml b/.github/release-drafter.yml
new file mode 100644
index 0000000..18468e1
--- /dev/null
+++ b/.github/release-drafter.yml
@@ -0,0 +1,6 @@
+template: |
+  ## What's Changed
+
+  $CHANGES
+
+  **Full Changelog**: https://github.com/$OWNER/$REPOSITORY/compare/$PREVIOUS_TAG...v$RESOLVED_VERSION
diff --git a/.github/workflows/create-release-pr.yml b/.github/workflows/create-release-pr.yml
new file mode 100644
index 0000000..f93c4cc
--- /dev/null
+++ b/.github/workflows/create-release-pr.yml
@@ -0,0 +1,27 @@
+name: create release prs
+
+on:
+  push:
+    branches:
+      - develop
+
+jobs:
+  create-release-pr:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.3
+      - name: Create a release PR
+        env:
+          GIT_PR_RELEASE_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GIT_PR_RELEASE_BRANCH_PRODUCTION: main
+          GIT_PR_RELEASE_BRANCH_STAGING: develop
+          GIT_PR_RELEASE_TEMPLATE: .github/.git-pr-release
+          GIT_PR_RELEASE_LABELS: release
+          TZ: Asia/Tokyo
+        run: |
+          gem install -N git-pr-release -v "2.2.0"
+          git-pr-release --no-fetch
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..228a386
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# misc
+cspell.json
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..5caab71
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 JPYC株式会社
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README-ja.md b/README-ja.md
new file mode 100644
index 0000000..bbbb123
--- /dev/null
+++ b/README-ja.md
@@ -0,0 +1,4 @@
+# JPYC Python SDK
+
+> [!IMPORTANT]
+> TODO: README in Japanese
diff --git a/README.md b/README.md
index 4f610d1..95953c4 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,4 @@
-# python-sdk
+# JPYC Python SDK
+
+> [!IMPORTANT]
+> TODO: README in English
diff --git a/docs/.gitkeep b/docs/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/core/.gitkeep b/src/core/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/tests/.gitkeep b/tests/.gitkeep
new file mode 100644
index 0000000..e69de29