# Toys404

- **Website:** <https://80aj.com>
- **Primary alias:** `80aj.com`

## Description

80AJ, also known as 80aj or 八零智记, is an independent knowledge and publishing platform focused on practical AI engineering. It documents the tools, workflows, and ideas that help developers build with artificial intelligence, with particular attention to Claude Code, AI programming, large language models, MCP, AI agents, and software architecture. Its content includes reproducible tutorials, engineering case studies, tool comparisons, troubleshooting guides, and commentary on emerging technologies and product development.

The site organizes its resources into articles, curated topic collections, knowledge maps, tool guides, open-source projects, and resource directories. Dedicated collections cover products such as ChatGPT and Codex, comparisons of leading AI models, agent frameworks including LangChain, LangGraph, Dify, and CrewAI, and practical guidance for using Claude Code. Readers can also explore materials on security and control, prompt libraries, development workflows, monitoring, and infrastructure. Through ongoing research and hands-on documentation, 80AJ aims to help AI engineers find useful information, apply tools effectively, and turn practical experience into lasting technical knowledge.

## Industries

- 🖥 Computers Electronics and Technology
- 🖥 Artificial Intelligence and Machine Learning _(under Computers Electronics and Technology)_

## Links

- [github](https://github.com/cfrs2005)
- [twitter](https://twitter.com/toys404)

## Logos & icons

- logo _(primary)_ — PNG — [download](https://cdn.brandfetch.io/idFb_4f7Jb/w/180/h/180/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1739117992279)
- icon _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idFb_4f7Jb/w/400/h/400/theme/dark/icon.jpeg?c=1bxid64Mup7aczewSAYMX&t=1793024200141)

## Colors

| Name | Hex | Theme |
| --- | --- | --- |
| Tall Poppy | #b52d29 | accent |
| Science Blue | #0b57d0 | dark |
| Goldenrod | #ffcb70 | light |

## Fonts

- ui-monospace — asset _(custom)_
- var(--aj-font-mono) — asset _(custom)_

## Imagery

- banner _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idFb_4f7Jb/w/1500/h/500/idlXZ6FiN8.jpeg?c=1bxid64Mup7aczewSAYMX&t=1793024200348)

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_Source: <https://brandfetch.com/80aj.com>_
_See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._