plan-canvas

plan-canvas is a skill for Claude Code, Codex from masrisystems/dot-agents. It costs 59 tokens per session (2,112 once invoked), scanned A, original, no licence file.

A browser-based canvas for showing plans and HTML work so a person can point to specific elements, discuss them, and approve or request changes on the page.

In plain words
What is it for?
Presenting plans for review and collecting feedback such as moving an element or changing part of a page.
Why use it?
It removes the need to describe visual changes only in text or switch between the plan and a separate chat.

Skill for Claude CodeCodex

Part of the ecc plugin — 70 skills, 71 commands, 55 agents, 1 MCP server shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/masrisystems/dot-agents/plan-canvas
Any agent
npx skills add masrisystems/dot-agents --skill plan-canvas
Clone the repo
git clone --depth 1 https://github.com/masrisystems/dot-agents

Made for: Claude Code, Codex.

Or install ecc, the plugin that ships this one along with the rest of its 70 skills, 71 commands, 55 agents, 1 MCP server.

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 plan-canvas

README.md
[![agentmods](https://agentmods.dev/badge/skills/masrisystems/dot-agents/plan-canvas.svg)](https://agentmods.dev/skills/masrisystems/dot-agents/plan-canvas)
Your own site
<a href="https://agentmods.dev/skills/masrisystems/dot-agents/plan-canvas"><img src="https://agentmods.dev/badge/skills/masrisystems/dot-agents/plan-canvas.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,112 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00059 $0.02112
Opus 5 $0.00030 $0.01056
Sonnet 5 $0.00012 $0.00422
Haiku 4.5 $0.00006 $0.00211

Measured 4d ago against content hash ade500c538ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-canvas 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 4d 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.

catalogs/ecc/.agents/skills/plan-canvas/SKILL.md · 196 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 196 lines · 59 tokens per session scan A ade500c538ee

Subscribe to this mod's changes

plan-canvas is a skill published in the GitHub repository masrisystems/dot-agents (0 stars, last pushed 3d ago), with no licence file. It adds 59 tokens to every session and 2,112 once invoked, about $0.0003 per session on Opus 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.

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