xn

Full-stack developer and independent builder behind XBSTACK, focused on Web, iOS, Android, cross-platform apps, AI engineering, agents, MCP, LangGraph, automation, and production reliability.

Joined on Jul 22, 2026 https://www.xbstack.com/

Work

Full-stack Web, iOS and Android Developer at XBSTACK

Sep 3

Gemini 3.8 Flash vs 3.7 Flash: Same Price, Different Agent Cost?

8 min read

Sep 2

Claude Fable 5.1 vs Mythos 5.1: Same Model, Different Access Boundary

2 min read

Sep 1

MCP StreamableHTTPClientTransport POST Stays Pending After SSE Disconnect: Issue #2739 Re…

8 min read

Aug 31

How to Security-Check an MCP Configuration: Secrets, Shell, Remote MCP, and Permissions

4 min read

Aug 31

How to Test an MCP Server Before Production: Read-Only Inspector Preflight

4 min read

Aug 31

How to Add WebMCP to a Website: Chrome 149 Forms, Tool Schemas, and registerTool

4 min read

Aug 31

How to Configure llms.txt v2: rel=alternate, describedby, and Markdown Discovery

4 min read

Aug 29

n8n Execution Stuck Running After Success: Zombie Execution When Successful Runs Are Not …

6 min read

Aug 26

n8n Code Node 'Task request timed out': Fix 'Not Matched to a Runner'

10 min read

Aug 21

OpenAI Assistants API Migration: Why Responses API Should Be Your New Architecture

1 min read

Aug 20

OpenAI Zero Data Retention for AI Agents: What ZDR Does—and Does Not—Cover

9 min read

Aug 19

n8n 2.35.3: Why $json.data.sort() Returns null

7 min read

Aug 18

n8n HTTP Request Returns a Stream Object with Raw Body + JSON Response

6 min read

Aug 15

DeepSeek V4-Pro-0813 + Harness: The Model Is Only Half the Story

11 min read

Aug 14

ChatGPT Work vs Codex: Route the Task Before You Pick the Tool

2 min read

Aug 9

Google ADK state_delta Not Applied on Resume: Runner.run_async Reproduction and Workaround

#ai #python #programming #opensource

7 min read

Aug 5

OpenAI Responses API Stream Abort: Fix No tool call found

14 min read

Aug 3

OpenAI Agents SDK Duplicate Tool Names: Why the Later Tool Wins

9 min read

Jul 30

Why LangGraph State Disappears After Run Cancellation: Streaming, Checkpoints and Recovery

17 min read

Jul 28

MCP initialize Removed: Reproducing Unknown MCP Session Across Replicas

#api #architecture #backend #mcp

2 min read

Jul 27

AI Agent Tool Authorization: Build a Policy Gate Before Tool Execution

8 min read

Jul 26

n8n AI Agent Not Calling Tools: The Request Contract Behind tool_choice

#agents #ai #debugging #llm

1 min read

Jul 24

OpenAI Agents SDK RunState: Resume Tool Approvals Without Duplicate Side Effects

#python #ai #openai #architecture

3 min read

Jul 24

AI SDK 7 Migration: The Production Breakages a Codemod Cannot Fix

#ai #production #softwareengineering #typescript

6 min read

Jul 23

I Tested Kimi K3 on a Real Astro Codebase: Strong Cross-File Analysis, Unsafe First Fix

#agents #ai #llm #programming

5 min read

Jul 23

GPT-5.6 Real-World Test: What Changed in an Astro, Content, and Analytics Workflow

21 min read

DEV Community

xn

Skills/Languages

Currently learning

Gemini 3.8 Flash vs 3.7 Flash: Same Price, Different Agent Cost?

Claude Fable 5.1 vs Mythos 5.1: Same Model, Different Access Boundary

MCP StreamableHTTPClientTransport POST Stays Pending After SSE Disconnect: Issue #2739 Re…

How to Security-Check an MCP Configuration: Secrets, Shell, Remote MCP, and Permissions

How to Test an MCP Server Before Production: Read-Only Inspector Preflight

How to Add WebMCP to a Website: Chrome 149 Forms, Tool Schemas, and registerTool

How to Configure llms.txt v2: rel=alternate, describedby, and Markdown Discovery

n8n Execution Stuck Running After Success: Zombie Execution When Successful Runs Are Not …

n8n Code Node 'Task request timed out': Fix 'Not Matched to a Runner'

OpenAI Assistants API Migration: Why Responses API Should Be Your New Architecture

OpenAI Zero Data Retention for AI Agents: What ZDR Does—and Does Not—Cover

n8n 2.35.3: Why $json.data.sort() Returns null

n8n HTTP Request Returns a Stream Object with Raw Body + JSON Response

DeepSeek V4-Pro-0813 + Harness: The Model Is Only Half the Story

ChatGPT Work vs Codex: Route the Task Before You Pick the Tool

Google ADK state_delta Not Applied on Resume: Runner.run_async Reproduction and Workaround

OpenAI Responses API Stream Abort: Fix No tool call found

OpenAI Agents SDK Duplicate Tool Names: Why the Later Tool Wins

Why LangGraph State Disappears After Run Cancellation: Streaming, Checkpoints and Recovery

MCP initialize Removed: Reproducing Unknown MCP Session Across Replicas

AI Agent Tool Authorization: Build a Policy Gate Before Tool Execution

n8n AI Agent Not Calling Tools: The Request Contract Behind tool_choice

OpenAI Agents SDK RunState: Resume Tool Approvals Without Duplicate Side Effects

AI SDK 7 Migration: The Production Breakages a Codemod Cannot Fix

I Tested Kimi K3 on a Real Astro Codebase: Strong Cross-File Analysis, Unsafe First Fix

GPT-5.6 Real-World Test: What Changed in an Astro, Content, and Analytics Workflow