Debugging

AI Agents

AI Agent Tool Loop: Stop Repeated Actions and Retries

Fix AI agent repeated tool calls using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

DevOps

RAG Returns No Results: Filters and Embedding Model Mismatch

Fix RAG empty retrieval results using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Agents

MCP stdio Invalid JSON: Keep Debug Logs on stderr

Fix MCP stdio JSON parse error using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Agents

MCP Tool Not Found: Diagnose Capability Discovery

Fix MCP tool not found error using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Agents

LangGraph Checkpoint Resume Fails: Persistence and State

Fix LangGraph checkpoint resume error using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Infrastructure

vLLM CUDA Out of Memory: KV Cache and Context Length

Fix vLLM CUDA out of memory using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Infrastructure

Ollama GPU Not Detected on Linux: Driver and Runtime

Fix Ollama GPU not detected using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Development

LLM SSE Streaming Stops Behind Nginx: Buffering Diagnosis

Fix LLM SSE streaming proxy buffering using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Development

OpenAI API 429 Rate Limit: Production Retry Runbook

Fix OpenAI API 429 troubleshooting using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read

AI Development

FastAPI Behind Nginx: HTTPS Redirect Loop Repair

Fix FastAPI Nginx HTTPS redirect loop using practical diagnostics, root causes, safe remediation, verification and rollback.

ProdCraftNov 7, 20264 min read