diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9ef1d5ae2b8..e5fb065f121 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -148,7 +148,7 @@ make lint
 
 Individual linting commands:
 ```bash
-make format-check       # Check Black formatting
+make format-check       # Check ruff format formatting
 make lint-ruff          # Run Ruff linting
 make lint-basedpyright  # Run basedpyright type checking
 make check-circular-imports    # Check for circular imports
@@ -160,14 +160,14 @@ Apply formatting (auto-fixes issues):
 make format
 ```
 
-> **Black formatting is enforced in CI.** All PRs must pass the Black formatting check.
+> **ruff format is enforced in CI.** All PRs must pass the ruff format check.
 >
-> - **AI coding agents** (Claude Code, Copilot, Cursor, etc.): `AGENTS.md` and `CLAUDE.md` instruct agents to run `poetry run black .` before committing.
-> - **VS Code users**: Install the [Black Formatter extension](https://marketplace.visualstudio.com/items?itemName=ms-python.black-formatter) and enable format-on-save:
+> - **AI coding agents** (Claude Code, Copilot, Cursor, etc.): `AGENTS.md` and `CLAUDE.md` instruct agents to run `make pre-commit` before committing, which format-checks the staged files.
+> - **VS Code users**: Install the [Ruff extension](https://marketplace.visualstudio.com/items?itemName=charliermarsh.ruff) and enable format-on-save:
 >   ```json
 >   {
 >     "[python]": {
->       "editor.defaultFormatter": "ms-python.black-formatter",
+>       "editor.defaultFormatter": "charliermarsh.ruff",
 >       "editor.formatOnSave": true
 >     }
 >   }
@@ -197,8 +197,8 @@ make help                       # Show all available commands
 make install-dev               # Install development dependencies
 make install-proxy-dev         # Install proxy development dependencies
 make install-test-deps         # Install the full local test environment
-make format                    # Apply Black code formatting
-make format-check              # Check Black formatting (matches CI)
+make format                    # Apply ruff format code formatting
+make format-check              # Check ruff format formatting (matches CI)
 make lint                      # Run all linting checks
 make test-unit                 # Run unit tests
 make test-integration          # Run integration tests
@@ -210,7 +210,7 @@ make test-unit-helm            # Run Helm unit tests
 LiteLLM follows the [Google Python Style Guide](https://google.github.io/styleguide/pyguide.html).
 
 Our automated quality checks include:
-- **Black** for consistent code formatting
+- **ruff format** for consistent code formatting
 - **Ruff** for linting and code quality
 - **basedpyright** for static type checking
 - **Circular import detection**
diff --git a/Makefile b/Makefile
index e17fdba3c85..0e2d8a09df2 100644
--- a/Makefile
+++ b/Makefile
@@ -166,8 +166,8 @@ lint-ruff: $(LINT_DEP_INSTALL)
 # inspiration from:
 # https://github.com/astral-sh/ruff/discussions/10977
 # https://github.com/astral-sh/ruff/discussions/4049
-lint-format-changed: install-dev
-	@git diff origin/main --unified=0 --no-color -- '*.py' | \
+lint-format-changed: install-dev lint-fetch-base
+	@git diff origin/litellm_internal_staging --unified=0 --no-color -- '*.py' | \
 	perl -ne '\
 		if (/^diff --git a\/(.*) b\//) { $$file = $$1; } \
 		if (/^@@ .* \+(\d+)(?:,(\d+))? @@/) { \
@@ -181,16 +181,16 @@ lint-format-changed: install-dev
 			$(UV_RUN) ruff format --range "$$lines" "$$file"; \
 		done
 
-lint-ruff-dev: install-dev
+lint-ruff-dev: install-dev lint-fetch-base
 	@tmpfile=$$(mktemp /tmp/ruff-dev.XXXXXX) && \
 	cd litellm && \
 	($(UV_RUN) ruff check . --output-format=pylint || true) > "$$tmpfile" && \
-	$(UV_RUN) diff-quality --violations=pylint "$$tmpfile" --compare-branch=origin/main && \
+	$(UV_RUN) diff-quality --violations=pylint "$$tmpfile" --compare-branch=origin/litellm_internal_staging && \
 	cd .. ; \
 	rm -f "$$tmpfile"
 
-lint-ruff-FULL-dev: install-dev
-	@files=$$(git diff --name-only origin/main -- '*.py'); \
+lint-ruff-FULL-dev: install-dev lint-fetch-base
+	@files=$$(git diff --name-only origin/litellm_internal_staging -- '*.py'); \
 	if [ -n "$$files" ]; then echo "$$files" | xargs $(UV_RUN) ruff check; \
 	else echo "No changed .py files to check."; fi
 
diff --git a/README.md b/README.md
index 68aaa09ec98..fe24735924f 100644
--- a/README.md
+++ b/README.md
@@ -629,9 +629,9 @@ For detailed contributing guidelines, see [CONTRIBUTING.md](CONTRIBUTING.md).
 LiteLLM follows the [Google Python Style Guide](https://google.github.io/styleguide/pyguide.html).
 
 Our automated checks include:
-- **Black** for code formatting
+- **ruff format** for code formatting
 - **Ruff** for linting and code quality
-- **MyPy** for type checking
+- **basedpyright** for type checking
 - **Circular import detection**
 - **Import safety checks**