diff --git a/.github/workflows/.github/workflows/policy-enforcement.yml b/.github/workflows/policy-enforcement.yml
similarity index 90%
rename from .github/workflows/.github/workflows/policy-enforcement.yml
rename to .github/workflows/policy-enforcement.yml
index 5471718..5894884 100644
--- a/.github/workflows/.github/workflows/policy-enforcement.yml
+++ b/.github/workflows/policy-enforcement.yml
@@ -28,7 +28,7 @@ jobs:
         run: |
           BRANCH_NAME="${{ github.head_ref }}"
           echo "Checking branch: $BRANCH_NAME"
-          if [[ ! "$BRANCH_NAME" =~ ^(main|feature\/.+|bugfix\/.+|hotfix\/.+|chore\/.+)$ ]]; then
+          if [[ ! "$BRANCH_NAME" =~ ^(main|feature\/.+|fix\/.+|bugfix\/.+|hotfix\/.+|chore\/.+|ci\/.+|docs\/.+|refactor\/.+)$ ]]; then
             echo "❌ Invalid branch naming convention"
             exit 1
           fi
@@ -65,4 +65,4 @@ jobs:
           fi
 
       - name: Policy checks passed
-        run: echo "✅ All policy checks passed"
+        run: echo "✅ All policy checks passed"
\ No newline at end of file
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..f8d1d85
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,24 @@
+# Contributing
+
+Thank you for your interest in contributing to this project!
+
+## Getting Started
+
+1. Fork the repository
+2. Create a branch following the naming convention: `feature/`, `bugfix/`, `hotfix/`, or `chore/`
+3. Make your changes
+4. Open a pull request against `main`
+
+## Branch Naming
+
+Branches must follow the pattern:
+- `feature/<description>`
+- `bugfix/<description>`
+- `hotfix/<description>`
+- `chore/<description>`
+
+## Code Standards
+
+- Keep files under 5MB
+- Ensure required directories exist: `model/`, `docs/`, `scripts/`, `data/`, `screenshots/`
+- All documentation should be in Markdown format
diff --git a/data/.gitkeep b/data/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/data/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/docs/ASSUMPTIONS.md b/docs/ASSUMPTIONS.md
new file mode 100644
index 0000000..b06a286
--- /dev/null
+++ b/docs/ASSUMPTIONS.md
@@ -0,0 +1,11 @@
+# Assumptions
+
+This document lists the key assumptions underlying the financial models in this project.
+
+## General Assumptions
+
+_To be completed._
+
+## Data Assumptions
+
+_To be completed._
diff --git a/docs/METHODOLOGY.md b/docs/METHODOLOGY.md
new file mode 100644
index 0000000..9918495
--- /dev/null
+++ b/docs/METHODOLOGY.md
@@ -0,0 +1,15 @@
+# Methodology
+
+This document describes the methodology used in the Financial Model API Dev Tools project.
+
+## Overview
+
+_To be completed._
+
+## Modeling Approach
+
+_To be completed._
+
+## Assumptions
+
+See [ASSUMPTIONS.md](ASSUMPTIONS.md) for a full list of assumptions.
diff --git a/model/.gitkeep b/model/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/model/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/screenshots/.gitkeep b/screenshots/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/screenshots/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/scripts/.gitkeep b/scripts/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/scripts/.gitkeep
@@ -0,0 +1 @@
+