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drawpad: Instructions file for Codex

AGENTS.md

drawpad AGENTS.md is an instructions file for Codex, OpenCode from merijjeyn/drawpad. It costs 1,242 tokens per session, scanned A, original, MIT.

Repository instructions for drawpad, a Go command-line tool that opens an Excalidraw drawing window. Excalidraw is a collaborative diagramming canvas.

In plain words
What is it for?
Use them when working on drawpad or when planning architecture, comparing designs, mapping workflows, or showing state changes visually.
Why use it?
They tell coding agents how this project works, how to invoke the tool, and when a diagram can communicate an idea more clearly than text.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is merijjeyn/drawpad's own configuration. It tells Codex and OpenCode how to work on drawpad itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything drawpad configures →

not rated 19repo 5mo ago A scan 1,242 tokens original MIT
View source ↗ merijjeyn/drawpad
Reuse

Borrowing it

Nothing to install: this file belongs to merijjeyn/drawpad. 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/merijjeyn/drawpad/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/merijjeyn/drawpad

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.

agentmods badge for drawpad AGENTS.md

README.md
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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.

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Per session 1,242 This file is loaded in full into every session.
When invoked 1,242 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01242 $0.01242
Opus 5.5 $0.00497 $0.00497
Sonnet 5.5 $0.00248 $0.00248
Haiku 4.5 $0.00124 $0.00124

Measured 2mo ago against content hash e8a52c9a7874, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

drawpad 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 · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — guidance for AI agents working in this repo

What this project is

drawpad is a Go CLI that opens a small Chrome window with an Excalidraw canvas so an AI agent and a human can collaborate on a diagram. The drawpad binary is on PATH — invoke it directly as drawpad, never as bin/drawpad or an absolute path. See drawpad --help for the user-facing contract (it is written for both humans and agents — read it before invoking the tool).

Use drawpad to talk back to the user when a picture beats text

This repo ships a tool whose entire purpose is visual communication with the user. When you are operating in this repo (or anywhere drawpad is on PATH), reach for it whenever a diagram would land faster than prose. Concrete triggers:

  • Architecture showcases. Before writing or refactoring multi-component code, sketch the layering / module graph in drawpad and ask the user to confirm or red-line it. Cheaper than writing the wrong code.
  • Design decisions with tradeoffs. When two or three structural options exist, draw them side by side and let the user point at the one they want (or annotate "no, like this").
  • Flows, sequences, state machines. Boxes and arrows convey ordering better than numbered lists.
  • UI / UX proposals. Wireframe the page in drawpad instead of describing it. The user will fix proportions and labels with one mouse drag.
  • Asking the user to sketch their idea. Hand them a blank canvas with --prompt "draw what you want". Their scribble + one-line comment will unstick you faster than three rounds of clarifying questions.

Don't use drawpad for trivial confirmations, things that fit in one line of text, or when no display is available (e.g. CI, headless SSH).

How to invoke it

drawpad \
  --prompt   "Question shown above the canvas." \
  --initial  scene.json \              # optional; omit for a blank canvas
  --output   result.json \             # or omit / "-" for stdout
  --screenshot-dir ./screenshots

Read the full file on GitHub · 115 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.

  1. 2mo ago First seen · 115 lines · 1,242 tokens per session scan A e8a52c9a7874

Subscribe to this mod's changes

drawpad AGENTS.md is an instructions file published in the GitHub repository merijjeyn/drawpad (19 stars, last pushed 5mo ago), licensed MIT. It adds 1,242 tokens to every session, about $0.0050 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.

Design and UX
Related

drawpad AGENTS.md compared with instructions from other repositories

drawpad AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
drawpad AGENTS.mdmerijjeyn/drawpadInstructions file195mo agoMITA1,242Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode