diff --git a/GEMINI.md b/GEMINI.md
index f419fd92..50580a29 100644
--- a/GEMINI.md
+++ b/GEMINI.md
@@ -61,6 +61,7 @@ The application will be available at `http://localhost:8080`.
 
 *   **Market Intelligence Tool (v1.2) - Backend Hardening:**
     *   **"Failed to fetch" Resolved:** Fixed a critical Nginx routing issue by forcing the frontend to use relative API paths (`./api`) instead of absolute ports, ensuring requests correctly pass through the reverse proxy in Docker.
+    *   **Large Payload Fix:** Increased `client_max_body_size` to 50M in both Nginx configurations (`nginx-proxy.conf` and frontend `nginx.conf`) to prevent 413 Errors when uploading large knowledge base files during campaign generation.
     *   **JSON Stability:** The Python Orchestrator and Node.js bridge were hardened against invalid JSON output. The system now robustly handles stdout noise and logs full raw output to `/app/Log/server_dump.txt` in case of errors.
     *   **Language Support:** Implemented a `--language` flag. The tool now correctly respects the frontend language selection (defaulting to German) and forces the LLM to output German text for signals, ICPs, and outreach campaigns.
     *   **Logging:** Fixed log volume mounting paths to ensure debug logs are persisted and accessible.
diff --git a/general-market-intelligence/nginx.conf b/general-market-intelligence/nginx.conf
index 8f29378e..d432b4fd 100644
--- a/general-market-intelligence/nginx.conf
+++ b/general-market-intelligence/nginx.conf
@@ -1,6 +1,9 @@
 server {
     listen 80;
     
+    # Allow large uploads for API proxying
+    client_max_body_size 50M;
+    
     # 1. Serve React Frontend (Static Files)
     location / {
         root /usr/share/nginx/html;
diff --git a/nginx-proxy.conf b/nginx-proxy.conf
index ae9fcfa6..03a7a064 100644
--- a/nginx-proxy.conf
+++ b/nginx-proxy.conf
@@ -9,6 +9,9 @@ http {
     access_log /dev/stdout;
     error_log /dev/stderr;
 
+    # Increase Body Size Limit for Large Payloads (Knowledge Base + Audits)
+    client_max_body_size 50M;
+
     # Increase Timeouts for Long-Running AI Tasks
     proxy_read_timeout 1200s;
     proxy_connect_timeout 1200s;