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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.

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Full-stack Web, iOS and Android Developer at XBSTACK

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

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

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7 min read
OpenAI Responses API Stream Abort: Fix No tool call found

OpenAI Responses API Stream Abort: Fix No tool call found

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14 min read
OpenAI Agents SDK Duplicate Tool Names: Why the Later Tool Wins

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

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

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

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17 min read
MCP initialize Removed: Reproducing Unknown MCP Session Across Replicas

MCP initialize Removed: Reproducing Unknown MCP Session Across Replicas

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2 min read
AI Agent Tool Authorization: Build a Policy Gate Before Tool Execution

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

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

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

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

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

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

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

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

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

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

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

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21 min read
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