cowart-open-canvas SKILL.md skillA
cowart-open-canvas from maomaochong-ai/open-astravia is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add maomaochong-ai/open-astravia/cowart-open-canvas@git:20261001.0ce1911Pins git:20261001.0ce1911 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- maomaochong-ai/open-astravia
- Path
packages/plugins/externals/cowart-astravia/agent/skills/cowart-open-canvas/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261001.0ce1911, committed Oct 1, 2026
- Size
- 1,646 bytes
- Repository stars
- 39
- License
- Apache-2.0
Open the Cowart infinite canvas (tldraw) in Astravia Desktop. Use when the user asks to open, launch, view, or work in the Cowart canvas or wants an infinite canvas for visual planning/image work.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Cowart Open Canvas (Astravia 1:1) ## Host mapping | Codex | Astravia | |-------|--------| | MCP App widget (`ui://widget/...`) | Activity panel tab with full tldraw `App` | | `window.cowartMcp` bridge | Plugin installs the same bridge via `ctx.fs` + `conversation.sendPrompt` | | Canvas files under project | `<projectDir>/canvas/` (shared with MCP tools) | ## Workflow 1. Call plugin tool `open_cowart_canvas` (opens the Cowart activity tab at max width). 2. Optionally call MCP `render_cowart_canvas_widget` with `projectDir` = **user workspace** to confirm storage paths. 3. Canvas data: ```text canvas/cowart-canvas.json canvas/pages/<page-id>/cowart-canvas.json canvas/pages/<page-id>/assets/ canvas/cowart-selection.json canvas/cowart-view-state.json ``` 4. User draws/annotates in the panel. Agent uses MCP tools (`get_cowart_*`, `insert_cowart_image`, …) for programmatic canvas IO. UI AI actions send follow-up prompts into the active conversation. ## Image tools (when UI / user asks for bitmaps) | Intent | Tool | |--------|------| | New image | **`generate_image`** | | Edit / annotation revise | **`edit_image`** | …
Read the whole file at its exact version.
How to install
mdr add maomaochong-ai/open-astravia/cowart-open-canvas@sha256:c943cac4675a4ac0The line at the top of this page pins the label git:20261001.0ce1911, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ebrk2vg33inpawfi)
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Versions
The registry has recorded 1 version of this file, committed on Oct 1, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1646 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
maomaochong-ai/open-astravia · 39 stars · license Apache-2.0 · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ebrk2vg33inpawfi GET https://markdownregistry.com/api/v1/resolve?ref=maomaochong-ai/open-astravia/cowart-open-canvas GET https://markdownregistry.com/api/v1/blob/c943cac4675a4ac02ef2bfb45612434df059f82ac8be1ebeae13bfcfb12c1b17
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.