Implementation: How to fix Railway 502 errors and verify MCP external access...
Documentation for Sessions
⚙️ Implementation: How to fix Railway 502 errors and verify MCP external access...
Date: 2026-01-23
Time: 18:26:01 UTC
Session: editor2-63.10
Agent: backend
Confidence: 95%
Status: ✅ Documented
📋 Decision Context
Question:
How to fix Railway 502 errors and verify MCP external access?
Task: Not specified
🎯 Decision Made
Chosen:
Fixed Dockerfile ports (8080→3001) and added PORT env var in Railway. Verified all MCP endpoints responding correctly.
Options Considered:
- No alternatives documented
💭 Reasoning
Root cause was port mismatch: Dockerfiles had hardcoded port 8080 in EXPOSE and healthcheck defaults, while Railway networking expected port 3001. Fixed by updating Dockerfiles to use correct ports (3000/3001/3002) and adding PORT variable in Railway. MCP external access now fully operational with proper authentication on protected endpoints.
📁 Files Involved
deployment/Dockerfile.railway.backend-aideployment/Dockerfile.railway.backenddeployment/Dockerfile.railway.docs-apiapis/backend-ai-api/src/main.ts
🔗 Related
- Decision ID:
dev_1769192761331_6a1cvdj - Session: 63
- Workspace: editor2
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