Jank — Install for Claude Desktop & Claude Code

Quality checks for AI coding agents — find the bugs Claude / Cursor / Codex tend to ship before they reach prod. Pick the install path that matches where you use Claude.

Claude Desktop · main chatDXT (drag-drop)

Claude Code · Code tab / CLIClone & symlink (4 lines)

Claude CoworkNot supported (cloud-only; needs local Chrome)

Claude Desktop · main chat

Drag-drop DXT install

v1.8.4 · 633.5 KB · DXT manifest 0.4

Single file. Drag into Claude Desktop's plugin manager. Prompts surface in the + attachments menu.

↓ Download & install

jank-latest.dxt manifest.json

How to install

Download the .dxt file above.
Open it — Claude Desktop prompts to install. (If you have an older Jank installed: Settings → Extensions → Remove first.)
Quit Claude Desktop fully (⌘Q, not just close window) and relaunch.
New conversation → click the + button → pick a Jank prompt (jank, jank_light, …).

Note: Claude Desktop's main chat does not surface DXT prompts in the typed-slash / autocomplete — only via the + picker. For typed /jank, use the marketplace install on the right.

Install via curl

curl -L -o jank.dxt https://jank.ai/extension/jank-latest.dxt
open jank.dxt

SHA-256
64af3515f2043d30d442cfaa8fefbc4fc96cac79a5a627847f2b30d8ca77de16

Claude Code · Code tab / CLI

Clone & symlink install

~/.claude/plugins · 4 lines

Bare /jank, /jank_light, … appear in the typed-slash menu of Claude Desktop's Code tab.

Copy & paste, then ⌘Q + relaunch:

git clone https://github.com/jarbon/jank.git /tmp/jank
mkdir -p ~/.claude/plugins ~/.claude/commands
cp -r /tmp/jank/plugins/jank-plugin ~/.claude/plugins/
ln -sf ~/.claude/plugins/jank-plugin/commands/*.md ~/.claude/commands/
rm -rf /tmp/jank

/jankfull sweep /jank_lightstatic scan /jank_testtest one feature /jank_explore5 user personas /jank_cloudhosted audit /jank_cleanreap zombie Chrome

Step-by-step

Run the four lines above in any terminal — clones the repo, drops the plugin into ~/.claude/plugins/, and symlinks the slash-command bodies into ~/.claude/commands/.
Quit Claude Desktop fully (⌘Q, not just close window).
Relaunch → open the Code tab.
Type / — the six commands appear in the slash menu.

Uninstall

rm -f ~/.claude/commands/jank*.md
rm -rf ~/.claude/plugins/jank-plugin

↗ View source on GitHub

Repo
github.com/jarbon/jank · plugins/jank-plugin

FAQ & troubleshooting

/jank doesn't appear in the slash menu

Almost always: Claude Desktop wasn't fully quit after install. ⌘Q (not just close-window), wait a couple seconds, relaunch. New conversation → type /. If still missing, verify ls ~/.claude/commands/jank.md exists for the Code-tab install, or check Settings → Extensions for the DXT install.

"MCP server disconnected"

The MCP server crashed or wasn't started. ⌘Q + relaunch usually fixes it. For the bundled server file: ls ~/.claude/plugins/jank-plugin/server/index.js — if missing, re-run the install. Check the log: tail -40 "~/Library/Logs/Claude/mcp-server-Jank — AI quality checks.log".

Which LLM does each command use? How many calls / tokens?

Two LLMs run during a local /jank run: chat Claude (handles orchestration — billed against your Claude account, ~5–15 calls per run) and your configured provider (OpenAI / Anthropic / Gemini / Azure — handles persona reasoning, billed against that provider).

Per-command provider call budget (very approximate, varies with model + page complexity):

/jank_light — 1–3 calls · ~10–30k tokens
/jank — ~80–120 calls (10 personas × ~6 steps each) · ~300–700k tokens
/jank_test — ~10–25 calls (2 focused agents) · ~50–150k tokens
/jank_explore — ~30–60 calls (5 personas × ~5–6 steps) · ~150–400k tokens
/jank_cloud — 0 local LLM calls (cloud-side, billed by your jank.ai plan)
/jank_clean — 0 LLM calls

Rough cost for a typical /jank run: gpt-5.4-mini ≈ $0.05–$0.20 · claude-sonnet-4-6 ≈ $0.50–$1.50 · gemini-3-flash-preview ≈ under $0.05. /jank_light and /jank_clean are essentially free; /jank_cloud is free for the first 3 runs/month.

How do I add my OpenAI / Anthropic / Gemini key?

DXT install: Settings → Extensions → Jank → fields for OpenAI, Anthropic, Gemini, Azure keys + a default-provider picker.
Code-tab install: tell Claude "save my OpenAI key sk-…" — it'll call the jank_config tool.
Env vars: OPENAI_API_KEY, ANTHROPIC_API_KEY, GEMINI_API_KEY, AZURE_OPENAI_API_KEY.
You only need one provider. /jank_light and /jank_cloud don't need a local LLM key at all.

/jank_cloud says email is required even after I set it

Restart the MCP server so the new env vars (or saved config) are picked up: ⌘Q Claude Desktop, relaunch. Verify it landed: in chat, ask Claude to call jank_get_config — it'll show the saved email + masked api_key + source ("env" / "disk" / "unset").

Where's my config / What's saved on disk?

~/.config/jank/config.json — provider keys, jank.ai email, default settings.
~/.claude/plugins/jank-plugin/ — the plugin itself (Code-tab install).
~/.claude/commands/jank*.md — slash-command shims (Code-tab install).
~/.jank/runs/<timestamp>/ — screenshots + findings from past runs (safe to delete any time).

How do I get the latest version?

DXT: download jank-latest.dxt, drag-drop, ⌘Q + relaunch. Settings → Extensions → Jank → Remove first if you have an older version.
Code tab: re-run the 4-line clone install above. The cp -r overwrites the existing plugin directory; symlinks repoint automatically.

Uninstall

DXT: Settings → Extensions → Jank → Remove. ⌘Q + relaunch.
Code tab:

rm -f ~/.claude/commands/jank*.md
rm -rf ~/.claude/plugins/jank-plugin
# optional: also remove saved config
rm -rf ~/.config/jank ~/.jank