run-dev-instance SKILL.md skillA
run-dev-instance from amir20/dozzle is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add amir20/dozzle/run-dev-instance@git:20260919.111c9c6Pins git:20260919.111c9c6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- amir20/dozzle
- Path
.claude/skills/run-dev-instance/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260919.111c9c6, committed Sep 19, 2026
- First version recorded
- Sep 11, 2026
- Size
- 2,995 bytes
- Repository stars
- 14,814
- License
- MIT
Use when Dozzle needs to be running in a browser to test a change by hand (clicking the UI, screenshots, driving it with Chrome or Playwright). Starts an instance on a free port derived from this worktree, so several worktrees can each have one at the same time, and never disturbs an instance someone else started.
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
# Run a Dozzle instance for testing Several worktrees are usually checked out at once and more than one of them may already be serving. **Never assume 3100 is yours** — it almost certainly belongs to another worktree, and killing it kills someone else's session. ## Start one ```bash make dev-auto # backgrounded; see below ``` It prints the URL before anything else: ``` ▸ dozzle dev on http://localhost:3356 (vite 5502, agent 7136) ``` The ports come from `scripts/dev-ports.mjs`, hashed from this checkout's path and then walked forward until free, so **this worktree always gets the same URL** and two worktrees never land on the same one. To know the URL without starting anything: ```bash bun scripts/dev-ports.mjs --json ``` Run it in the background and wait for the port rather than a fixed sleep: ```bash PORT=$(bun scripts/dev-ports.mjs --json | grep -o '"DOZZLE_PORT": [0-9]*' | grep -o '[0-9]*') # start make dev-auto with run_in_background, then: until curl -sf -o /dev/null http://localhost:$PORT/; do sleep 1; done ``` `make dev-auto` is `air` + `vite` with hot reload, which is what you want while iterating …
Read the whole file at its exact version.
How to install
mdr add amir20/dozzle/run-dev-instance@sha256:0694c5442bb72037The line at the top of this page pins the label git:20260919.111c9c6, 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_i4j3qur5avnofu2s)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 11, 2026 and Sep 19, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.111c9c6 latest | 2026-09-19 | 111c9c6 | 2,995 B | A | view · diff |
| git:20260918.e5e2524 | 2026-09-18 | e5e2524 | 2,997 B | A | view · diff |
| git:20260911.26eb030 | 2026-09-11 | 26eb030 | 2,988 B | A | view |
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 (2995 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
amir20/dozzle · 14,814 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i4j3qur5avnofu2s GET https://markdownregistry.com/api/v1/resolve?ref=amir20/dozzle/run-dev-instance GET https://markdownregistry.com/api/v1/blob/0694c5442bb7203762b6584de6c7d47d9c28b0ad08e67d30a39c6b62f74eaba6
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.