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+---
+id: a2d02aea-07fd-4528-8158-f2f42a23a2dd
+type: configuration
+title: "Cargo check post-edit hook for Rust files in Claude Code"
+tags: [sba-scouting, rust, claude-code, hooks, linting, cargo, configuration, developer-experience]
+importance: 0.65
+confidence: 0.8
+created: "2026-03-02T00:33:26.804471+00:00"
+updated: "2026-03-02T00:33:26.804471+00:00"
+---
+
+# Cargo Check Post-Edit Hook Configuration
+
+## File
+`rust/.claude/settings.json`
+
+## Purpose
+Runs `cargo check --message-format=short` automatically after any Edit or Write to `.rs` files during a Claude Code session. Provides fast feedback without waiting for a manual build.
+
+## Why cargo check (not clippy)
+- `cargo clippy` is too slow for every single edit (takes several seconds)
+- `cargo check` is faster — catches type errors and borrow checker issues quickly
+- Clippy should be run manually at logical checkpoints:
+  - Before commits
+  - After finishing a feature
+  - After batch edits to multiple files
+
+## Settings JSON Structure
+```json
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": { "tool_name": ["Edit", "Write"], "file_paths": [".*\\.rs$"] },
+        "hooks": [
+          { "type": "command", "command": "cargo check --message-format=short" }
+        ]
+      }
+    ]
+  }
+}
+```
+
+## Documentation
+Also documented in `rust/CLAUDE.md` for future session context.