What is blog AGENTS.md?

Project-specific instructions for agents working on a bilingual blog built with Next.js, React, TypeScript, Tailwind CSS, and MDX content.

Installing dependencies, starting the development server, running linting and tests, performing browser tests, building the site, and following its internationalization and architecture rules.

They document the correct package manager, development commands, project structure, and testing workflow so changes fit the repository.

How sabertaz/blog configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to sabertaz/blog. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/sabertaz/blog/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/sabertaz/blog

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/sabertaz/blog/agents-md/github.svg)](https://agentmods.dev/instructions/sabertaz/blog/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/sabertaz/blog/agents-md"><img src="https://agentmods.dev/badge/instructions/sabertaz/blog/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/sabertaz/blog/agents-md"><img src="https://agentmods.dev/badge/instructions/sabertaz/blog/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,670 This file is loaded in full into every session.

When invoked 1,670 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.01670	$0.01670
Opus 5.5	$0.00668	$0.00668
Sonnet 5.5	$0.00334	$0.00334
Haiku 4.5	$0.00167	$0.00167

Measured 2mo ago against content hash 4460935e3ac9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

blog AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to coding agents when working with code in this repository.

Quick Start

# First time setup
pnpm install                    # ~15-20s
pnpm playwright install --with-deps  # E2E browsers (first time only)

# Development
pnpm dev                        # Start dev server at localhost:3000 (~1s)

# Common Tasks
pnpm lint                       # Run all linters (~5-10s)
pnpm lint:fix                   # Auto-fix linting issues
pnpm test                       # Unit tests (watch mode)
pnpm test:all                   # Unit tests with coverage (~35-40s)
pnpm e2e                        # E2E tests (~5-10min, includes build)
pnpm build                      # Production build (~30-40s)

# Important: Always use pnpm (never npm/yarn)

Architecture Overview

Modern bilingual blog built with Next.js App Router, featuring i18n, MDX content, animations, and comprehensive testing.

Core Stack

Next.js with App Router and Turbopack
React with React Compiler enabled (automatic optimizations)
TypeScript in strict mode
Tailwind CSS (no config file, uses PostCSS)
pnpm as package manager

Key Features

Internationalization (i18n)

Full i18n support with next-intl
Locale-based routing: /[locale]/... structure
Supported locales: en-US (default) and zh-CN
Content organized by locale in content/[locale]/
Translation files in messages/[locale].json

Content Management

MDX-based blog posts with front matter
Content processing pipeline:
- gray-matter for front matter parsing
- next-mdx-remote for server-side MDX rendering
- remark plugins: gfm, math, directives, gemoji, github
- rehype plugins: slug, autolink-headings, external-links, katex, mdx-code-props
Rich features: KaTeX math, admonitions, syntax highlighting with Shiki, live code editor with Sandpack

Component Architecture

Server components by default (Next.js App Router)
Client components marked with 'use client' when needed
Shadcn UI components in src/components/ui/ (do not modify)
Custom MDX components configured in src/components/post-content.tsx
Path aliases: @/ for src/, @/images/ for public/images/, @/tests/ for __tests__/

Read the full file on GitHub · 195 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 195 lines · 1,670 tokens per session scan A 4460935e3ac9

Subscribe to this mod's changes

blog AGENTS.md is an instructions file published in the GitHub repository sabertaz/blog (58 stars, last pushed 3mo ago), licensed MIT. It adds 1,670 tokens to every session, about $0.0067 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

blog markdown mdx next-blog next-starter

blog AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
blog AGENTS.mdsabertaz/blog	Instructions file	58	3mo ago	MIT	A	1,670	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

blog: Instructions file for Codex