diff --git a/.gitignore b/.gitignore
index 62b3779d..799978cf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -57,6 +57,16 @@ pnpm-lock.yaml
 .nuxt/
 .cache/
 
+# ===================
+# Development Tests
+# ===================
+dev/tests/__pycache__/
+dev/tests/*.pyc
+dev/tests/test_results/
+dev/tests/simple_test_results.json
+dev/tests/data/
+dev/tests/*.db
+
 # ===================
 # Logs & Runtime
 # ===================
diff --git a/dev/tests/README.md b/dev/tests/README.md
new file mode 100644
index 00000000..2a5d34c0
--- /dev/null
+++ b/dev/tests/README.md
@@ -0,0 +1,26 @@
+# Development Tests
+
+This directory contains ad-hoc development tests and experimental scripts.
+
+## Purpose
+
+- Quick validation during development
+- Multi-chain testing scenarios
+- API submission experiments
+- Cross-site testing
+- Performance validation scripts
+
+## Usage
+
+These tests are meant for development use only and may not be suitable for CI/CD pipelines.
+
+## Structure
+
+- `test_multi_chain*.py` - Multi-chain blockchain testing
+- `test_api_submit*.py` - API submission testing
+- `test_*.sh` - Shell script test scenarios
+- `simple_test_results.json` - Test results storage
+
+## Note
+
+For production-ready tests, see the main `/tests/` directory.