An index for working with Canvasight, a canvas-based workspace for visual and structured tasks. It directs requests to the appropriate Canvasight workflow, such as opening a canvas, writing graph data, or generating an image.

Use it when opening or updating a Canvasight canvas, generating images on it, creating graph nodes and edges, or coordinating Canvasight agents.

It helps route different Canvasight requests to the right procedure. This reduces confusion when a task involves the canvas, agents, diagrams, or images.

canvasight — Skill for Claude Code and Codex by Niall-Young

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.

Any agent

npx skills add Niall-Young/Canvasight --skill canvasight

Clone the repo

git clone --depth 1 https://github.com/Niall-Young/Canvasight

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/niall-young/canvasight/canvasight/github.svg)](https://agentmods.dev/skills/niall-young/canvasight/canvasight)

Your own site

<a href="https://agentmods.dev/skills/niall-young/canvasight/canvasight"><img src="https://agentmods.dev/badge/skills/niall-young/canvasight/canvasight/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/niall-young/canvasight/canvasight"><img src="https://agentmods.dev/badge/skills/niall-young/canvasight/canvasight.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 675 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00084	$0.00675
Opus 5.5	$0.00034	$0.00270
Sonnet 5.5	$0.00017	$0.00135
Haiku 4.5	$0.00008	$0.00068

Measured 1mo ago against content hash 9be33133b610, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

canvasight 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.

plugins/canvasight/skills/canvasight/SKILL.md · 29 lines

How it starts

The opening of the file, as written. The whole thing — 29 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Canvasight

Use this skill as the narrow index for Canvasight-specific work that does not clearly fit one specialized Canvasight skill.

Prefer Specialized Skills

Use canvasight-open for opening the native widget through open_canvasight, verifying it through await_canvasight_widget_ready, recovering an explicit browser fallback, or claiming an existing browser canvas for the current Codex task.
Use canvasight-run for Chat-only native widget bridge Run delivery, claim_canvasight_thread, await_canvasight_run fallback, and legacy Plan/Goal-to-Chat normalization.
Use canvasight-agent-team when a Canvasight Run payload enables Agent Team or the user asks for role-registry or agent-report coordination.
Use canvasight-graph-writer for creating or updating Canvasight nodes and edges from AI analysis, including active-canvas medium or complex requests that should be decomposed before direct execution.
Use canvasight-imagegen when @Canvasight asks to generate, draw, or render a new bitmap directly into the active Page. It owns the verified-open, $imagegen, and atomic Asset import sequence.
Use canvasight-update when the user asks to check for or install an official Canvasight update. Keep check-only requests read-only, and delegate installation and rollback entirely to its bundled updater.
Use canvasight-troubleshooting for install, daemon, MCP cache, browser URL, or connection failures.

Shared Boundaries

Canvasight output must return through the MCP native widget host bridge or MCP daemon await_canvasight_run fallback, not app-server turn/start, UI automation, Accessibility, DOM clicks, or clipboard paste. Native widget host bridge includes MCP Apps ui/message and Codex/OpenAI compatibility window.openai.sendFollowUpMessage.
Do not use macOS Accessibility automation, virtual clicks, clipboard paste, DOM clicks, or codex://threads/new.
Page write behavior is controlled by mode; task structure is controlled by graphType.
Normal plugin use should not ask the user to run npm run dev.
open_canvasight completion is provisional. Treat its sessionId plus openAttemptId and the mandatory instance-bound await as one open action. Only verified fullscreen readiness with true React/project/canvas evidence confirms the native widget; fallback, daemon health, resource reads, and automated tests do not.
An open Canvasight session creates active canvas context. If the user says "用画布", "放到画布", "写到画布", or equivalent while Canvasight is active, treat "canvas" as Canvasight graph writing unless they explicitly mean a web <canvas> element.
Prefer graph writing for later medium or complex structured requests, but keep small direct commands and Run payloads on their normal path.

Read the full file on GitHub · 29 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.

1mo ago First seen · 29 lines · 84 tokens per session scan A 9be33133b610

Subscribe to this mod's changes

canvasight is a skill published in the GitHub repository Niall-Young/Canvasight (216 stars, last pushed 1mo ago), licensed MIT. It adds 84 tokens to every session and 675 once invoked, about $0.0003 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.

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