diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..eaf9deb
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,25 @@
+# EditorConfig — https://editorconfig.org
+# Provides consistent formatting defaults across editors and platforms.
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 4
+
+[*.md]
+# Trailing whitespace is significant in Markdown (line breaks).
+trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2
+
+[*.toml]
+indent_size = 2
+
+[Dockerfile]
+indent_size = 4
diff --git a/clippy.toml b/clippy.toml
new file mode 100644
index 0000000..c45fd63
--- /dev/null
+++ b/clippy.toml
@@ -0,0 +1,9 @@
+# Clippy configuration for ZeroClaw.
+# Thresholds tuned to match codebase patterns and reduce noise from
+# existing allow-attributes while still catching genuinely complex code.
+
+cognitive-complexity-threshold = 30
+
+too-many-arguments-threshold = 10
+
+too-many-lines-threshold = 200
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..3a26366
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1 @@
+edition = "2021"