blackbelttechnology/pi-agent-dashboard · packages/extension/.pi/skills/canvas-webapp/SKILL.md

canvas-webapp skillC

canvas-webapp is agent-read markdown (skill) from blackbelttechnology/pi-agent-dashboard: Render a React/Vite (or any bundled) web app on the pi-dashboard canvas, which loads loopback URLs in a sandboxed opaque-origin iframe. Use when a canvas(target:{kind:"url"|"server"}) target shows up blank white, an empty surface, or a /live/<id> 500 ECONNREFUSED. Covers why Vite dev servers and non-CORS static servers fail there, and the static-build + CORS-server recipe that works..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add blackbelttechnology/pi-agent-dashboard/canvas-webapp@git:20260815.b32439e
Exact content
mdr add blackbelttechnology/pi-agent-dashboard/canvas-webapp@sha256:43de637a73707322

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ubmwjvrgvjo74zxb.svg)](https://markdownregistry.com/a/art_ubmwjvrgvjo74zxb)

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Versions

versioncommittedcommitsizeaudit
git:20260815.b32439e latest2026-08-15 b32439e 5,532 BC view

Audit of the latest version

C  15 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No link to a raw IP address (matched: http://127.0.0.1)
  • fail: No script tag (matched: <script)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5532 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

Source

GitHub

blackbelttechnology/pi-agent-dashboard · 292 stars · license MIT · pushed 2026-09-18 · branch develop

API

GET https://markdownregistry.com/api/v1/artifacts/art_ubmwjvrgvjo74zxb
GET https://markdownregistry.com/api/v1/resolve?ref=blackbelttechnology/pi-agent-dashboard/canvas-webapp
GET https://markdownregistry.com/api/v1/blob/43de637a73707322b432effc7a452d317164b56d1415290302f3791fbe945669

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.