agentcanvas: Instructions file for Codex

AGENTS.md

agentcanvas AGENTS.md is an instructions file for Codex, OpenCode from raytone-lab/agentcanvas. It costs 1,585 tokens per session, scanned A, original, MIT.

Project instructions for AgentCanvas, an app that configures agent user interfaces and exports runnable code. They define the design rules and require a schema-driven layout instead of an unlimited design canvas.

In plain words
What is it for?
Use them when changing the app's UI, component structure, interaction behavior, or code-export flow.
Why use it?
They keep generated interfaces consistent with the project's visual specification and maintainable after export.

Instructions file for CodexOpenCode

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

This is raytone-lab/agentcanvas's own configuration. It tells Codex and OpenCode how to work on agentcanvas 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 agentcanvas configures →

Reuse

Borrowing it

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

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.

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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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Your own site · 80×15
<a href="https://agentmods.dev/instructions/raytone-lab/agentcanvas/agents-md"><img src="https://agentmods.dev/badge/instructions/raytone-lab/agentcanvas/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,585 This file is loaded in full into every session.
When invoked 1,585 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 $0.01585 $0.01585
Opus 5.5 $0.00634 $0.00634
Sonnet 5.5 $0.00317 $0.00317
Haiku 4.5 $0.00159 $0.00159

Measured 2mo ago against content hash 81cb26e1f70a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agentcanvas 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 · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Design Source of Truth

Before generating or changing any UI, read DESIGN.md (project root) — the visual + interaction spec (colors, typography, geometry, elevation, component contracts, motion). Use semantic tokens only; no raw hex or raw px motion durations. Component architecture lives in docs/COMPONENT_SYSTEM.md. App orchestration layering (src/app state machine, viewmodel, projections, and the agent-preview facade boundaries) lives in docs/APP_ARCHITECTURE.md.

Project Mode

This project is AgentUX Scaffold Configurator: a default Agent frontend template plus focused UX presets on top of AgentUX SDK.

Optimize for the shortest path to a working, maintainable scaffold. Challenge goals or paths that drift toward a generic low-code builder, infinite canvas, heavy component assembly surface, or decorative UI prototype without exportable engineering structure.

Core Product Rule

Do not build a Figma-style infinite canvas.

The product should feel configurable, but the implementation must be schema-driven and region-constrained so exported code remains clean. Users should start from a strong default Agent frontend, then adjust key UX presets.

The primary user journey is: users assemble and tune the Agent UI/UX in this app, click download/export, receive a runnable code package, and continue second-stage development of their own Agent frontend from that package. AgentCanvas is the scaffold configurator and package generator, not the long-term hosted runtime for the user's Agent product.

Do not treat export as a cosmetic manifest or preview-only summary. The export path must produce real project files that can be installed, run, edited, and extended outside AgentCanvas.

Allowed regions:

  • main
  • composer
  • right-panel
  • bottom-dock
  • overlay

Free positioning is not a primary MVP interaction. Optional snap placement is acceptable only for composer, output, Git, and overlay/floating components with clear bounds.

Even without drag/drop as the primary interaction, keep each major UI area independent and copyable. The builder should be able to customize Chat, Composer, Output, Git, Activity UX, Provider/Harness controls, and Debug Dock separately.

Read the full file on GitHub · 203 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 Changed · +35 tokens per session 81cb26e1f70a
  2. 2mo ago First seen · 203 lines · 1,550 tokens per session scan A 0b5792ba9174

Subscribe to this mod's changes

agentcanvas AGENTS.md is an instructions file published in the GitHub repository raytone-lab/agentcanvas (26 stars, last pushed 21d ago), licensed MIT. It adds 1,585 tokens to every session, about $0.0063 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.

Related

agentcanvas AGENTS.md compared with instructions from other repositories

agentcanvas AGENTS.md next to 6 instructions from other repositories
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