arc-host SKILL.md skillB
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
arc-host from hudsonkit/arc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hudsonkit/arc/arc-host@git:20260922.b0d7494Pins git:20260922.b0d7494 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hudsonkit/arc
- Path
skills/arc-host/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260922.b0d7494, committed Sep 22, 2026
- First version recorded
- Sep 5, 2026
- Size
- 2,145 bytes
- Repository stars
- 13
- License
- MIT
Operate the Arc exe.dev deployment — studio, MCP server, health checks, and redeploy. Use on arc-studio or arc-server VMs, or when asked to check, restart, or update the hosted Arc stack.
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
# Arc Host (exe.dev) You are on an exe.dev VM running Arc. Agents grok arc — diagrams are typed JSON, validated, and opened in the studio. ## Endpoints | Surface | URL | |---------|-----| | Studio | https://arc-studio.exe.xyz/ | | Editor | https://arc-studio.exe.xyz/editor | | MCP HTTP | https://arc-server.exe.xyz/mcp | | MCP health | https://arc-server.exe.xyz/health | | Shelley (arc-server) | https://arc-server.shelley.exe.xyz | Local on this VM: | Service | Port | systemd unit | |---------|------|--------------| | Studio preview | 5188 | `arc-studio` | | MCP HTTP | 5190 | `arc-mcp` | Repo: `~/arc` (bun, React 19, Vite 7). ## MCP tools (authoring loop) Connect to `http://127.0.0.1:5190/mcp` or the public URL. Tools: - `validate_diagram` — schema check - `diff_diagram` — structural delta - `auto_layout` — Sugiyama layout - `render_ascii` — terminal preview - `render_svg` — deterministic SVG export - `render_png` — PNG image when Chrome/Chromium is installed (`ARC_CHROME` overrides lookup) - `render_html` — React component, iframe embed, or standalone HTML - `diagram_to_typescript` — TS module export - `editor_handoff` — `#data=` studio URL …
Read the whole file at its exact version.
How to install
mdr add hudsonkit/arc/arc-host@sha256:f94844a654275d8bThe line at the top of this page pins the label git:20260922.b0d7494, 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_h6dhspx7n2cirp54)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 5, 2026 and Sep 22, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260922.b0d7494 latest | 2026-09-22 | b0d7494 | 2,145 B | B | view · diff |
| git:20260905.15d91db | 2026-09-05 | 15d91db | 1,898 B | B | view |
Audit of the latest version
- fail: No link to a raw IP address (matched: http://127.0.0.1:5190)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2145 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 script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
hudsonkit/arc · 13 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h6dhspx7n2cirp54 GET https://markdownregistry.com/api/v1/resolve?ref=hudsonkit/arc/arc-host GET https://markdownregistry.com/api/v1/blob/f94844a654275d8b003efb2c7a1d154290cfc6a1f522d29715b12573948cc73d
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.