Borrowing it
Nothing to install: this file belongs to ZhgChgLi/mcp-medium-reader. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ZhgChgLi/mcp-medium-reader/main/AGENTS.mdgit clone --depth 1 https://github.com/ZhgChgLi/mcp-medium-readerWrote 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.
[](https://agentmods.dev/instructions/zhgchgli/mcp-medium-reader/agents-md)<a href="https://agentmods.dev/instructions/zhgchgli/mcp-medium-reader/agents-md"><img src="https://agentmods.dev/badge/instructions/zhgchgli/mcp-medium-reader/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.
<a href="https://agentmods.dev/instructions/zhgchgli/mcp-medium-reader/agents-md"><img src="https://agentmods.dev/badge/instructions/zhgchgli/mcp-medium-reader/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.01405 | $0.01405 |
| Opus 5.5 | $0.00562 | $0.00562 |
| Sonnet 5.5 | $0.00281 | $0.00281 |
| Haiku 4.5 | $0.00140 | $0.00140 |
Grade A, and why
mcp-medium-reader 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- mcp-medium-reader CLAUDE.md — 92% identical, 8 lines differ
How it starts
The opening of the file, as written. The whole thing — 40 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to Codex (Codex.ai/code) when working with code in this repository.
Commands
npm run build—tsc→dist/(thebin/mcp-medium-reader.jsshim imports fromdist/, so unbuilt source won't run via the bin).npm run dev -- <subcommand>— run viatsxwithout building (e.g.npm run dev -- doctor).npm test— full vitest run.npm test -- test/runtime.test.ts— single test file.npm test -- -t "name"for a single test by name.npm run build:watch/npm run test:watch— watch modes.prepackrunstsc, sonpm pack/ publish always ships freshdist/. The repo also commitsdist/because git-based installs (npm i -g github:…) skip thepreparestep — keep committeddist/in sync when shipping a fix that needs to be installable from git.
Architecture
Cross-platform MCP stdio server that wraps the external ZMediumToMarkdown Ruby gem (≥ 3.5.2). The Node process never talks to Medium directly; every tool call shells out to the gem and post-processes its stdout/stderr. Runs on macOS / Linux / Windows.
Cookie ownership boundary
Cookies (sid / uid / cf_clearance / _cfuvid) are managed entirely by the gem in its own AES-256-GCM encrypted cache at ~/.zmediumtomarkdown (mode 0600). The MCP server does NOT store, inject, or scrub cookies. Users populate the gem cache by running ZMediumToMarkdown --auth once in their own Terminal — the gem opens Chrome via ferrum for sign-in / Cloudflare clearance and caches the result. The MCP transport gives the gem a non-TTY stdin which trips its --non-interactive auto-detection, so the gem can never do its own Chrome flow under MCP.
The MCP server holds no Medium-side state of its own — no cookies, no proxy URLs, no per-user secrets. Earlier drafts had a Cloudflare Worker proxy pair (medium_host / miro_medium_host) stored at <config_dir>/credentials.json; that whole layer was removed. The only on-disk state mcp-medium-reader manages now is runtime.json (the bound Ruby runtime).
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 · 40 lines · 1,405 tokens per session scan A 761637d7c0c8
mcp-medium-reader AGENTS.md is an instructions file published in the GitHub repository ZhgChgLi/mcp-medium-reader (2 stars, last pushed 5mo ago), licensed MIT. It adds 1,405 tokens to every session, about $0.0056 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.