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Quinn Li

Data engineer building scalable pipelines.

Location Shanghai, China Joined Joined on 
Dear Past Me: Three Silent Defaults That Cost a Day

Dear Past Me: Three Silent Defaults That Cost a Day

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6 min read
Redact the Stack Before the Model Sees It

Redact the Stack Before the Model Sees It

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9 min read
Dear Past Me: Three Agent Loop Mistakes That Cost a Day

Dear Past Me: Three Agent Loop Mistakes That Cost a Day

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7 min read
Score Free AI Tiers Before You Ship: 5 Criteria

Score Free AI Tiers Before You Ship: 5 Criteria

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5 min read
免费 AI 端点会以 6 种可预测的方式失效——以下是如何在它们发生之前发现它们

免费 AI 端点会以 6 种可预测的方式失效——以下是如何在它们发生之前发现它们

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2 min read
Turn Your Git Diff into a Commit Message with a Free AI Server

Turn Your Git Diff into a Commit Message with a Free AI Server

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3 min read
Dear Past Me: A Model 200 Is Not a Database Commit

Dear Past Me: A Model 200 Is Not a Database Commit

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7 min read
Build an Async Job Queue So Your Free-Tier LLM Never Blocks Your App

Build an Async Job Queue So Your Free-Tier LLM Never Blocks Your App

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3 min read
Dear Past Me: Never Start a Free AI Stack Without a Token Audit

Dear Past Me: Never Start a Free AI Stack Without a Token Audit

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4 min read
The Day I Trusted an Agent With a Free API Key

The Day I Trusted an Agent With a Free API Key

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4 min read
Dear Past Me: Free Tokens and a Free Server Are Not Free Time

Dear Past Me: Free Tokens and a Free Server Are Not Free Time

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4 min read
Letter to My Past Self: Your Agent Loop Needs a Kill Switch

Letter to My Past Self: Your Agent Loop Needs a Kill Switch

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5 min read
Dear Past Me: 3 Mistakes That Cost a Day in the Free AI Stack

Dear Past Me: 3 Mistakes That Cost a Day in the Free AI Stack

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4 min read
Your Repo's Issue Queue Is a Mess. Here's a Free Model Triage Workflow That Actually Runs

Your Repo's Issue Queue Is a Mess. Here's a Free Model Triage Workflow That Actually Runs

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4 min read
Trying MonkeyCode's Free AI Stack? Run This Gated Setup First

Trying MonkeyCode's Free AI Stack? Run This Gated Setup First

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4 min read
When MiniMax H3 Trends, Run an Adoption Gate Instead of Switching

When MiniMax H3 Trends, Run an Adoption Gate Instead of Switching

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4 min read
Stop Guessing Which AI Model to Use: Build a Two-Week Routing Log From Your Own Tasks

Stop Guessing Which AI Model to Use: Build a Two-Week Routing Log From Your Own Tasks

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5 min read
Build a Personal Model Bake-Off: Testing Free AI Assistants on Your Real Bugs

Build a Personal Model Bake-Off: Testing Free AI Assistants on Your Real Bugs

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5 min read
Don't Run AI-Generated Code on Your Laptop: Free Sandbox Harness

Don't Run AI-Generated Code on Your Laptop: Free Sandbox Harness

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5 min read
Deciding If AI Code Review Fits Your Repo: A Throwaway Experiment That Costs Nothing

Deciding If AI Code Review Fits Your Repo: A Throwaway Experiment That Costs Nothing

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5 min read
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