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/AGENTS.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/instructions/czaruno/tui-canvas/agents-md)<a href="https://agentmods.dev/instructions/czaruno/tui-canvas/agents-md"><img src="https://agentmods.dev/badge/instructions/czaruno/tui-canvas/agents-md/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/instructions/czaruno/tui-canvas/agents-md"><img src="https://agentmods.dev/badge/instructions/czaruno/tui-canvas/agents-md.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 | $0.01741 | $0.01741 |
| Opus 5.5 | $0.00696 | $0.00696 |
| Sonnet 5.5 | $0.00348 | $0.00348 |
| Haiku 4.5 | $0.00174 | $0.00174 |
Grade A, and why
tui-canvas 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.
How it starts
The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TUI Canvas - Development Guidelines
Overview
TUI Canvas is a universal MCP server that provides interactive terminal canvases for AI coding assistants. It works with OpenCode, Claude Code, Cursor, Gemini CLI, Grok CLI, and any MCP-compatible harness.
Key Feature: MCP tools support waitForResult parameter to wait for user selections and return results via IPC.
Project Structure
tui-canvas/
├── packages/
│ ├── core/ # TUI canvas components (Ink/React)
│ │ ├── src/
│ │ │ ├── ipc/ # Unix socket IPC
│ │ │ │ ├── server.ts # Controller server + Canvas server
│ │ │ │ ├── client.ts # Canvas client (connects to controller)
│ │ │ │ └── types.ts # Message types
│ │ │ ├── api/ # High-level canvas APIs
│ │ │ ├── scenarios/ # Scenario type definitions
│ │ │ └── canvases/ # Canvas components
│ │ │ ├── calendar.tsx
│ │ │ ├── document.tsx
│ │ │ └── flight.tsx
│ │
│ ├── cli/ # Unified CLI
│ │ └── src/
│ │ ├── index.ts # Commands: list, info, spawn, env, cleanup, status
│ │ ├── registry.ts # Canvas discovery from manifests
│ │ └── spawn.ts # Scoped pane isolation + spawning
│ │
│ ├── mcp/ # MCP server (universal entry point)
│ │ └── src/
│ │ ├── index.ts # MCP server with IPC support
│ │ ├── detect.ts # Harness detection
│ │ └── tools.ts # MCP tool definitions
│ │
│ └── protocol/ # Canvas protocol types
│
├── canvases/ # Canvas implementations
│ ├── calendar/
│ ├── document/
│ └── flight/
│
├── .opencode/skill/ # Agent skills
│ ├── canvas/SKILL.md
│ ├── calendar/SKILL.md
│ ├── document/SKILL.md
│ └── flight/SKILL.md
│
├── docs/
│ ├── feature-parity.md
│ ├── architecture/
│ │ └── ipc-protocol.md
│ └── sessions/
│
└── opencode.json # MCP configuration
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.
- 2mo ago First seen · 223 lines · 1,741 tokens per session scan A 5fedbde1753b
tui-canvas AGENTS.md is an instructions file published in the GitHub repository Czaruno/tui-canvas (0 stars, last pushed 9mo ago), licensed MIT. It adds 1,741 tokens to every session, about $0.0070 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.
tui-canvas AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| tui-canvas AGENTS.mdCzaruno/tui-canvas | Instructions file | 0 | 9mo ago | MIT | A | 1,741 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |