Borrowing it
Nothing to install: this file belongs to urbanmorph/mdshare. 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/urbanmorph/mdshare/main/AGENTS.mdgit clone --depth 1 https://github.com/urbanmorph/mdshareWrote 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/urbanmorph/mdshare/agents-md)<a href="https://agentmods.dev/instructions/urbanmorph/mdshare/agents-md"><img src="https://agentmods.dev/badge/instructions/urbanmorph/mdshare/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/urbanmorph/mdshare/agents-md"><img src="https://agentmods.dev/badge/instructions/urbanmorph/mdshare/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 | $0.00437 | $0.00437 |
| Opus 5.5 | $0.00175 | $0.00175 |
| Sonnet 5.5 | $0.00087 | $0.00087 |
| Haiku 4.5 | $0.00044 | $0.00044 |
Grade A, and why
mdshare 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 1mo 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.
What it actually says
This app runs on Astro 5 + Cloudflare Workers
mdshare uses Astro 5 with the @astrojs/cloudflare adapter, deployed natively to Cloudflare Workers (no OpenNext, no Next.js). React components are used as Astro islands. If you're unsure about an Astro API, conventions, or config option, read the relevant guide in node_modules/astro/dist/docs/ (or check https://docs.astro.build) before writing code. Heed deprecation notices.
Things that may surprise you
- API routes use
cloudflare:workersenv import, notgetCloudflareContext(). Pattern:import { env } from "cloudflare:workers"; const db = env.DB; Astro.paramsis synchronous in Astro 5 (not a Promise like Next.js 15 routes)- Static pages are pre-rendered with
export const prerender = true— they ship 0KB worker code and serve from CDN - Dynamic pages need
export const prerender = false - React islands use
client:load/client:only="react", not"use client"directives - Custom worker entry:
src/worker.tsis the actual Cloudflare Worker entry. It exports acreateExports(manifest)function that wraps Astro'shandle()to add WebSocket bypass, security headers, and Durable Object exports public/.assetsignoreprevents wrangler from refusing to upload because_worker.jslives inside the assets directory- No middleware.ts — security headers are added in
src/worker.tsafter Astro's response - Tiptap BubbleMenu (
@tiptap/react/menus) renders a floating "Comment" button above the user's text selection. Lives incomponents/editor/tiptap-editor.tsx. UsesonMouseDown preventDefaultto prevent iOS from clearing the selection on tap. The bubble is the single path for anchoring a comment — the legacymouseup/touchendtracker was removed.
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.
- 1mo ago First seen · 16 lines · 437 tokens per session scan A f27e1f867411
mdshare AGENTS.md is an instructions file published in the GitHub repository urbanmorph/mdshare (8 stars, last pushed 4d ago), licensed MIT. It adds 437 tokens to every session, about $0.0017 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
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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.
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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).
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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.
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Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
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AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.