diff --git a/.cursor/rules/comment-style/RULE.md b/.cursor/rules/comment-style/RULE.md
new file mode 100644
index 00000000000..e15508a853a
--- /dev/null
+++ b/.cursor/rules/comment-style/RULE.md
@@ -0,0 +1,9 @@
+---
+description: "Comment style conventions for code comments"
+globs: "**/*.{rs}"
+alwaysApply: true
+---
+
+# Overview
+
+Every sentence in comments must start with a capital letter and end with a period. Applies to line comments (`//`), doc comments (`///`), and block comments (`/* */`).
diff --git a/.cursor/rules/run-commands-in-venv/RULE.md b/.cursor/rules/run-commands-in-venv/RULE.md
new file mode 100644
index 00000000000..b5ae99a9d7d
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+++ b/.cursor/rules/run-commands-in-venv/RULE.md
@@ -0,0 +1,9 @@
+git aff ---
+description: "Ensures commands are run within the virtual environment"
+globs: "*"
+alwaysApply: true
+---
+
+# Overview
+
+ALWAYS run ". sequencer_venv/bin/activate" before executing any terminal commands.
diff --git a/.cursor/rules/test-execution/RULE.md b/.cursor/rules/test-execution/RULE.md
new file mode 100644
index 00000000000..b7f2ecf9945
--- /dev/null
+++ b/.cursor/rules/test-execution/RULE.md
@@ -0,0 +1,9 @@
+---
+description: "Test execution patterns and best practices"
+globs: "**/*.rs"
+alwaysApply: true
+---
+
+# Overview
+
+When running specific tests, always use `-p` to compile only the specific crate.