diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..8a118a5
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,29 @@
+repos:
+  - repo: https://github.com/psf/black
+    rev: 22.3.0
+    hooks:
+      - id: black
+        language_version: python3.10
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.3.0
+    hooks:
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+
+  - repo: https://github.com/pycqa/flake8
+    rev: 4.0.1
+    hooks:
+      - id: flake8
+        entry: pflake8
+        additional_dependencies:
+          - flake8-bugbear
+          - flake8-comprehensions
+          - flake8-simplify
+          - pyproject-flake8
+
+  - repo: https://github.com/pycqa/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+        name: isort
diff --git a/README.md b/README.md
index 8fce708..3b13b1c 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Rectes
 
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+
 Rectes (anagram from "secret") is self-hosted service to share secrets (like passwords) with somebody
 over the network, but don't want them to appear in chats, unencrypted e-mails, etc.
 
@@ -7,3 +9,18 @@ This service tries to be as anonymous as possible. The only personal information
 on a server will be IP address of the client that made request to the server.
 
 Service is built with Python, FastAPI and is using Redis for data storage.
+
+## Contributing
+
+Codestyle is enforced with Black, and additional checks are done with the help of pre-commit-hooks,
+Flake8 and isort. Prior to making any commits, install `pre-commit` tool and install hooks:
+
+```
+# Alternatively, you could use 'pip install ".[development]"'
+$ pip install pre-commit==2.19.0
+$ pre-commit install
+```
+
+This way you will always be sure that new code follows project guidelines.
+
+This project is using trunk-based branching strategy with the `main` as trunk branch.
diff --git a/pyproject.toml b/pyproject.toml
index b0f0765..869016d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,10 @@
 [build-system]
 requires = ["setuptools>=42"]
 build-backend = "setuptools.build_meta"
+
+[tool.isort]
+profile = "black"
+
+[tool.flake8]
+max-line-length = 88
+extend-ignore = "E203, B008"
diff --git a/setup.cfg b/setup.cfg
index c2a9345..384c067 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,6 +13,8 @@ python_requires = >=3.10
 [options.extras_require]
 hiredis =
     hiredis==2.0.0
+development =
+    pre-commit==2.19.0
 
 [options.packages.find]
 where = src