diff --git a/.github/workflows/security-methodology-check.yml b/.github/workflows/security-methodology-check.yml
index d245d83..1171c11 100644
--- a/.github/workflows/security-methodology-check.yml
+++ b/.github/workflows/security-methodology-check.yml
@@ -19,3 +19,6 @@ jobs:
 
       - name: Run methodology structure check
         run: bash scripts/check-security-methodology.sh
+
+      - name: Run requirement traceability check
+        run: bash scripts/check-requirement-traceability.sh
diff --git a/README.md b/README.md
index 5779f89..6c293df 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,14 @@ Secure-AI-Flow separates the AI delivery process into four roles.
     verify-methodology.sh
 ```
 
+## Automated Methodology Checks
+
+The repository includes automated checks for:
+
+- Structure validation with `scripts/check-security-methodology.sh`.
+- Methodology verification with `scripts/verify-methodology.sh`.
+- Requirement traceability validation with `scripts/check-requirement-traceability.sh`.
+
 ## How to Use This Methodology
 
 ### Step 1: Fill Governance First
diff --git a/scripts/check-requirement-traceability.sh b/scripts/check-requirement-traceability.sh
new file mode 100755
index 0000000..f71bf36
--- /dev/null
+++ b/scripts/check-requirement-traceability.sh
@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+python3 - <<'PY'
+from pathlib import Path
+import re
+import sys
+
+requirements_path = Path("context/06-security-requirements.md")
+specs_dir = Path("specs")
+valid_id_pattern = re.compile(r"^[A-Z][A-Z0-9]+-[0-9]{3}$")
+source_id_pattern = re.compile(r"\b[A-Z][A-Z0-9]+-\d{3}\b")
+
+valid_ids = set(source_id_pattern.findall(requirements_path.read_text(encoding="utf-8")))
+
+errors = []
+for spec_path in sorted(specs_dir.glob("*.md")):
+    lines = spec_path.read_text(encoding="utf-8").splitlines()
+    in_security_requirements = False
+
+    for line_number, line in enumerate(lines, start=1):
+        if line.startswith("## "):
+            in_security_requirements = line.strip() == "## Security Requirements"
+            continue
+
+        if not in_security_requirements:
+            continue
+
+        stripped = line.strip()
+        if not stripped or not stripped.startswith("-"):
+            continue
+
+        bullet = stripped[1:].strip()
+        if bullet == "":
+            continue
+
+        first_token = bullet.split()[0]
+        if not valid_id_pattern.fullmatch(first_token):
+            issue = "malformed ID" if ("-" in first_token or any(c.isdigit() for c in first_token)) else "missing ID"
+            value = first_token if issue == "malformed ID" else bullet
+            errors.append((spec_path, line_number, value, issue))
+            continue
+
+        if first_token not in valid_ids:
+            errors.append((spec_path, line_number, first_token, "unknown ID"))
+
+if errors:
+    for spec_path, line_number, value, issue in errors:
+        print("Invalid security requirement ID reference:", file=sys.stderr)
+        print(f"  file: {spec_path}", file=sys.stderr)
+        print(f"  line: {line_number}", file=sys.stderr)
+        print(f"  issue: {issue}", file=sys.stderr)
+        print(f"  value: {value}", file=sys.stderr)
+        print(f"  valid IDs source: {requirements_path}", file=sys.stderr)
+    sys.exit(1)
+
+print("Requirement traceability check passed.")
+PY
diff --git a/scripts/check-security-methodology.sh b/scripts/check-security-methodology.sh
index 5f973e1..9b0a96f 100755
--- a/scripts/check-security-methodology.sh
+++ b/scripts/check-security-methodology.sh
@@ -28,6 +28,7 @@ required_files=(
   "specs/001-secure-file-upload.md"
   "ci/security-gates.md"
   ".github/pull_request_template.md"
+  "scripts/check-requirement-traceability.sh"
 )
 
 missing=0
diff --git a/scripts/verify-methodology.sh b/scripts/verify-methodology.sh
index 747ef30..5d82d6b 100755
--- a/scripts/verify-methodology.sh
+++ b/scripts/verify-methodology.sh
@@ -26,6 +26,7 @@ required=(
   "context/15-security-stress-test-matrix.md"
   "ci/security-gates.md"
   "references/official-source-map.md"
+  "scripts/check-requirement-traceability.sh"
 )
 
 missing=0
@@ -45,4 +46,6 @@ grep -q "Data" context/02-data-classification-and-privacy.md
 grep -q "Threat" context/04-threat-model.md
 grep -q "Reviewer" context/13-reviewer-playbook.md
 
+bash scripts/check-requirement-traceability.sh
+
 echo "Secure-AI-Flow methodology structure verified."