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.
npx skills add tboome33/obsidian-mcp-router --skill canvasgit clone --depth 1 https://github.com/tboome33/obsidian-mcp-routerWrote 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/tboome33/obsidian-mcp-router/canvas)<a href="https://agentmods.dev/skills/tboome33/obsidian-mcp-router/canvas"><img src="https://agentmods.dev/badge/skills/tboome33/obsidian-mcp-router/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/tboome33/obsidian-mcp-router/canvas"><img src="https://agentmods.dev/badge/skills/tboome33/obsidian-mcp-router/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 | $0.00114 | $0.01393 |
| Opus 5 | $0.00057 | $0.00696 |
| Sonnet 5 | $0.00023 | $0.00279 |
| Haiku 4.5 | $0.00011 | $0.00139 |
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 — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
canvas
Obsidian's .canvas files are JSON. This skill writes them programmatically with sensible auto-layout so you don't have to hand-position nodes.
.canvas format primer
A canvas file is a JSON object:
{
"nodes": [
{
"id": "<unique-id>",
"type": "file|text|link|group",
"x": <int>, "y": <int>,
"width": <int>, "height": <int>,
"color": "1-6 or #hex" // optional
// type-specific fields below
}
],
"edges": [
{
"id": "<unique-id>",
"fromNode": "<node-id>",
"fromSide": "top|right|bottom|left",
"toNode": "<node-id>",
"toSide": "top|right|bottom|left",
"label": "<optional>"
}
]
}
Type-specific fields:
type: "file"→ adds"file": "<vault-relative-path>"(any file: .md, .png, .pdf, etc.)type: "text"→ adds"text": "<markdown content>"type: "link"→ adds"url": "<https://...>"type: "group"→ adds"label": "<zone label>","background": "<optional>"
Operations
canvas-new <name>
Create a new canvas at wiki/canvases/<slug>.canvas (extension is .canvas only — Obsidian renders these with a canvas icon in the file tree). Empty nodes and edges arrays.
canvas-add-text <canvas> <text>
Append a text node. Auto-position: rightmost node's x + width + 50, same y. Default size 300×120.
canvas-add-file <canvas> <path>
Append a file node. Auto-detect size based on file type:
- Markdown: 400×300
- Image (.png/.jpg/.webp): 400×400
- PDF: 600×800
- Other: 400×300
canvas-add-link <canvas> <url>
Append an external link card. Default size 400×120.
canvas-zone <canvas> <label>
Add a group node. Default size 800×600. Position: below or right of the rightmost group, with a 50px gap.
canvas-add-to-zone <canvas> <zone-label> <node>
Place the new node WITHIN the bounding box of the named zone. Useful for organized layouts ("add this image to the 'References' zone").
canvas-list <canvas>
Read the canvas file, list all nodes with their type/label/file/text-preview. Read-only.
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 · 131 lines · 114 tokens per session scan A a6865e410b45
canvas is a skill published in the GitHub repository tboome33/obsidian-mcp-router (1 stars, last pushed today), licensed Apache-2.0. It adds 114 tokens to every session and 1,393 once invoked, about $0.0006 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 2026-09-03.
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