How do I install the D3k skill?

Run npx skillmds@latest add ulpi-io/d3k in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the D3k skill do?

d3k Standalone Bootstrap It is listed under Coding & Dev Tools on SkillMD.

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with D3k?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

ulpi-io (@ulpi-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

D3k by ulpi-io — Agent Skill

Name: D3k
Author: ulpi-io

File contents

d3k Standalone Bootstrap

Use this skill when working in a standalone AI app and you need reliable local web debugging with browser + server context.

Why d3k-first

d3k captures server logs, browser console, network events, and screenshots in one timeline.
d3k exposes a stable CDP endpoint so the agent can control the same browser session being monitored.
Running npm run dev or bun run dev directly omits this unified telemetry and usually leads to weaker diagnoses.

Bootstrap Workflow

Confirm whether d3k is installed:

command -v d3k >/dev/null && d3k --version

If d3k is missing, install dev3000 globally (prefer Bun):

bun install -g dev3000

Fallback if Bun is unavailable:

npm install -g dev3000

Start d3k as the runtime (preferred default in agent shells):

d3k --no-agent --no-tui -t

Keep d3k running while editing code. Do not start a second dev server with npm/bun dev.

Debugging Commands

Use these first before ad-hoc log scraping:

d3k errors --context
d3k logs -n 200
d3k logs --type browser
d3k logs --type server

CDP Browser Control

Use the already-monitored browser session instead of launching a separate automation browser.

CDP_PORT="$(d3k cdp-port)"
d3k agent-browser --cdp "$CDP_PORT" open http://localhost:3000
d3k agent-browser --cdp "$CDP_PORT" snapshot -i
d3k agent-browser --cdp "$CDP_PORT" click @e2
d3k agent-browser --cdp "$CDP_PORT" screenshot /tmp/d3k-current.png

Artifacts to Read

~/.d3k/{project}/d3k.log
~/.d3k/{project}/logs/
~/.d3k/{project}/screenshots/
~/.d3k/{project}/session.json

Operating Rules

Prefer headed mode for interactive debugging.
Use --headless only for CI or when explicitly requested.
Use --servers-only only when browser monitoring is intentionally disabled.

---name: d3kdescription: d3k Standalone Bootstrap---# d3k Standalone BootstrapUse this skill when working in a standalone AI app and you need reliable local web debugging with browser + server context.## Why d3k-first- `d3k` captures server logs, browser console, network events, and screenshots in one timeline.- `d3k` exposes a stable CDP endpoint so the agent can control the same browser session being monitored.- Running `npm run dev` or `bun run dev` directly omits this unified telemetry and usually leads to weaker diagnoses.## Bootstrap Workflow1. Confirm whether `d3k` is installed:```bashcommand -v d3k >/dev/null && d3k --version```2. If `d3k` is missing, install dev3000 globally (prefer Bun):```bashbun install -g dev3000```Fallback if Bun is unavailable:```bashnpm install -g dev3000```3. Start d3k as the runtime (preferred default in agent shells):```bashd3k --no-agent --no-tui -t```4. Keep d3k running while editing code. Do not start a second dev server with `npm/bun dev`.## Debugging CommandsUse these first before ad-hoc log scraping:```bashd3k errors --contextd3k logs -n 200d3k logs --type browserd3k logs --type server```## CDP Browser ControlUse the already-monitored browser session instead of launching a separate automation browser.```bashCDP_PORT="$(d3k cdp-port)"d3k agent-browser --cdp "$CDP_PORT" open http://localhost:3000d3k agent-browser --cdp "$CDP_PORT" snapshot -id3k agent-browser --cdp "$CDP_PORT" click @e2d3k agent-browser --cdp "$CDP_PORT" screenshot /tmp/d3k-current.png```## Artifacts to Read- `~/.d3k/{project}/d3k.log`- `~/.d3k/{project}/logs/`- `~/.d3k/{project}/screenshots/`- `~/.d3k/{project}/session.json`## Operating Rules- Prefer headed mode for interactive debugging.- Use `--headless` only for CI or when explicitly requested.- Use `--servers-only` only when browser monitoring is intentionally disabled.

Frequently asked questions

D3k