Borrowing it
Nothing to install: this file belongs to Czaruno/tui-canvas. 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/Czaruno/tui-canvas/main/.opencode/skill/canvas/SKILL.mdgit clone --depth 1 https://github.com/Czaruno/tui-canvasWrote 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/skills/czaruno/tui-canvas/canvas)<a href="https://agentmods.dev/skills/czaruno/tui-canvas/canvas"><img src="https://agentmods.dev/badge/skills/czaruno/tui-canvas/canvas/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/skills/czaruno/tui-canvas/canvas"><img src="https://agentmods.dev/badge/skills/czaruno/tui-canvas/canvas.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 | $0.00026 | $0.00531 |
| Opus 5 | $0.00013 | $0.00266 |
| Sonnet 5 | $0.00005 | $0.00106 |
| Haiku 4.5 | $0.00003 | $0.00053 |
Grade A, and why
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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Canvas TUI Toolkit
Start here when using terminal canvases. This skill covers the overall workflow, canvas types, and when to use each one.
When to Use Canvases
Use canvases when users need to:
- View or interact with structured data visually
- Make selections from calendars, documents, or flight options
- See information that benefits from a dedicated display
Available Canvas Types
| Canvas | MCP Tool | Purpose | Scenarios |
|---|---|---|---|
| Calendar | canvas_calendar |
Display calendars, pick meeting times | display, meeting-picker |
| Document | canvas_document |
View/edit markdown documents | display, edit, email-preview |
| Flight | canvas_flight |
Flight comparison and seat selection | booking |
Example Prompts
Calendar:
- "Show me my calendar for this week"
- "Find a time when Alice and Bob are both free"
- "Schedule a 30-minute meeting next Tuesday"
Document:
- "Draft an email to the sales team about the new feature"
- "Show me this README so I can review it"
- "Help me edit this document"
Flight:
- "Find flights from SFO to Denver next Friday"
- "Book me a window seat on the morning flight"
- "Compare United flights to Boston under $300"
Quick Reference
Calendar Canvas
canvas_calendar(scenario: "display" | "meeting-picker", config?: string)
Document Canvas
canvas_document(content: string, scenario?: "display" | "edit" | "email-preview", title?: string)
Flight Canvas
canvas_flight(config: string) // JSON with flights array
Requirements
- tmux session: Canvases spawn in tmux split panes
- Terminal with mouse support: For click-based interactions
Pane Behavior
- All canvases spawn in a dedicated split pane
- The same pane is reused for subsequent canvas spawns
- Press
qorEscto close a canvas
Related Skills
| Skill | Purpose |
|---|---|
calendar |
Calendar display and meeting picker details |
document |
Document rendering and text selection |
flight |
Flight comparison and seat map details |
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.
- 8d ago First seen · 78 lines · 26 tokens per session scan A 8f81047bd82f
canvas is a skill published in the GitHub repository Czaruno/tui-canvas (0 stars, last pushed 7mo ago), licensed MIT. It adds 26 tokens to every session and 531 once invoked, about $0.0001 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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