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Eric Tech Circle
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Eric Tech Circle

Backend team lead & architect with 10+ years experience, full‑stack engineer, sharing insights and solo development practice.

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Recent Articles

Latest from Eric Tech Circle

88 recent articles
Eric Tech Circle
Eric Tech Circle
Aug 17, 2026 · Backend Development

WeChat Mini Program Virtual Payment Integration: Lessons Learned and Common Pitfalls

This article walks through switching a Mini Program’s membership, subscription, and virtual‑goods purchases to WeChat’s virtual payment system, detailing the differences from V3 payment, the three‑stage flow (initiation, confirmation, refund), and dozens of concrete pitfalls such as order‑ID reuse, push reliability, iOS refund limits, sandbox charging, and configuration latency.

Payment IntegrationSandbox TestingVirtual Payment
0 likes · 11 min read
WeChat Mini Program Virtual Payment Integration: Lessons Learned and Common Pitfalls
Eric Tech Circle
Eric Tech Circle
Aug 10, 2026 · Artificial Intelligence

Aligning Agent Workflows with the Grill Me Skill: Design, Mechanism, and Real‑World Demo

This article introduces the lightweight Grill Me skill for AI agents, explains how its batch‑questioning and recommendation‑based alignment process reduces rework, provides installation commands, and showcases a step‑by‑step demonstration on the Codex CLI, highlighting decision summaries and quick‑exit options.

AI agentsAutomationCodex CLI
0 likes · 5 min read
Aligning Agent Workflows with the Grill Me Skill: Design, Mechanism, and Real‑World Demo
Eric Tech Circle
Eric Tech Circle
Aug 3, 2026 · Artificial Intelligence

Native Integration of DeepSeek V4 Flash into Codex

The article explains how to directly integrate the newly released DeepSeek V4 Flash model—supporting the Responses API and offering 1 M context length—into Codex without proxy tools, provides step‑by‑step configuration files, shows cost and token‑usage tables, and compares it with OpenCode usage.

AICodexDeepSeek
0 likes · 6 min read
Native Integration of DeepSeek V4 Flash into Codex
Eric Tech Circle
Eric Tech Circle
Jul 10, 2026 · Artificial Intelligence

GPT‑5.6 Launch: Three Model Tiers, New ChatGPT & Codex Features, and How to Choose

OpenAI’s GPT‑5.6 release introduces three tiered models—Sol, Terra, and Luna—each with distinct pricing and performance trade‑offs, integrates ChatGPT Work and Codex into a unified platform, and provides detailed guidance on selecting the right tier for architecture, daily development, batch tasks, or large‑scale autonomous projects.

AI agentsChatGPT WorkCodex
0 likes · 16 min read
GPT‑5.6 Launch: Three Model Tiers, New ChatGPT & Codex Features, and How to Choose
Eric Tech Circle
Eric Tech Circle
Jun 16, 2026 · Mobile Development

80+ Mini Program Review Lessons: Common Pitfalls and How to Fix Them

After more than 80 WeChat Mini Program submissions, this guide compiles the most frequent review rejections—privacy agreement gaps, content‑security failures, forced login, brand misuse, and missing test accounts—and provides concrete checklists and step‑by‑step solutions to help developers pass audits quickly and reliably.

WeChat Mini Programcontent securityguest mode
0 likes · 9 min read
80+ Mini Program Review Lessons: Common Pitfalls and How to Fix Them
Eric Tech Circle
Eric Tech Circle
Jun 1, 2026 · R&D Management

From a Generic ERP SaaS to a Vertical Industry System: A Practical Guide to Engineering Asset Reuse

The author recounts how they leveraged the engineering structure, common capabilities, documentation standards, and AI‑assisted workflows from an existing ERP SaaS project to build a vertical, headquarters‑partner system, highlighting the need to define boundaries, adapt business logic, and use AI for support rather than blind code copying.

AI-assisted developmentDocumentation StandardsERP
0 likes · 13 min read
From a Generic ERP SaaS to a Vertical Industry System: A Practical Guide to Engineering Asset Reuse
Eric Tech Circle
Eric Tech Circle
May 26, 2026 · Artificial Intelligence

Taming Codex with AGENTS.md: Project‑Level Context Governance

When AI coding assistants like Codex are launched in a project without proper context, they often modify the wrong code, run incorrect commands, misplace files, or ignore project conventions; the article explains that this stems from missing project rules and shows how an AGENTS.md file can provide the needed guidance, improve efficiency, and avoid common pitfalls.

AGENTS.mdAI agentsCodex
0 likes · 10 min read
Taming Codex with AGENTS.md: Project‑Level Context Governance
Eric Tech Circle
Eric Tech Circle
May 22, 2026 · Operations

Isolating Multiple Codex CLI Accounts on macOS Using CODEX_HOME

On macOS with zsh, you can avoid repetitive login/logout when using several Codex CLI accounts by copying the ~/.codex directory, setting distinct CODEX_HOME paths, and creating alias commands, allowing each account to maintain separate configurations, contexts, and quotas while sharing project rules via AGENTS.md.

CODEX_HOMECodex CLIMulti-Account
0 likes · 7 min read
Isolating Multiple Codex CLI Accounts on macOS Using CODEX_HOME
Eric Tech Circle
Eric Tech Circle
May 18, 2026 · Artificial Intelligence

Exploring Codex Mobile: Remote Control of Your Desktop from a Phone

This article walks through how OpenAI's Codex Mobile lets you monitor, command, and approve Codex desktop tasks from a smartphone, turning the phone into a remote cockpit for viewing progress, issuing new instructions, and handling approvals without needing a full IDE on the device.

AI coding assistantAutomationChatGPT Mobile
0 likes · 7 min read
Exploring Codex Mobile: Remote Control of Your Desktop from a Phone
Eric Tech Circle
Eric Tech Circle
May 15, 2026 · Frontend Development

A Free Markdown Formatting Tool Tailored for WeChat Public Account Authors

The author rebuilt a WeChat public‑account markdown formatter using Codex App + GPT 5.5 and Kiro IDE + Claude Opus 4.7, offering real‑time preview, one‑click inline‑style copy, multiple themes, code highlighting and mobile preview to eliminate tedious manual styling while keeping the tool completely free.

Code HighlightingHTMLMarkdown
0 likes · 6 min read
A Free Markdown Formatting Tool Tailored for WeChat Public Account Authors