Borrowing it
Nothing to install: this file belongs to varandrew/moor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/varandrew/moor/main/.agents/skills/d3k/SKILL.mdgit clone --depth 1 https://github.com/varandrew/moorWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/varandrew/moor/d3k)<a href="https://agentmods.dev/skills/varandrew/moor/d3k"><img src="https://agentmods.dev/badge/skills/varandrew/moor/d3k/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/varandrew/moor/d3k"><img src="https://agentmods.dev/badge/skills/varandrew/moor/d3k.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00012 | $0.01252 |
| Opus 5.5 | $0.00005 | $0.00501 |
| Sonnet 5.5 | $0.00002 | $0.00250 |
| Haiku 4.5 | $0.00001 | $0.00125 |
Grade A, and why
d3k scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -I http://127.0.0.1:3000 How it starts
The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.
d3k Commands
d3k captures browser and server logs in a unified log file. Use these commands:
Viewing Errors and Logs
d3k errors # Show recent errors (browser + server combined)
d3k errors --context # Show errors + user actions that preceded them
d3k errors -n 20 # Show last 20 errors
d3k logs # Show recent logs (browser + server combined)
d3k logs --type browser # Browser logs only
d3k logs --type server # Server logs only
Other Commands
d3k fix # Deep analysis of application errors
d3k fix --focus build # Focus on build errors
d3k crawl # Discover app URLs
d3k crawl --depth all # Exhaustive crawl
Browser Interaction
d3k agent-browser auto-connects to the active session's browser via CDP:
d3k agent-browser open http://localhost:3000/page
d3k agent-browser snapshot -i # Get element refs (@e1, @e2)
d3k agent-browser click @e2
d3k agent-browser fill @e3 "text"
d3k agent-browser screenshot /tmp/shot.png
To target a different browser, run d3k agent-browser connect <port> first.
Codex Fresh Browser/Profile Startup
Use this workflow when the user asks Codex to start d3k with a fresh browser/profile.
-
Close any stale
agent-browserdaemon before launching with--profile. Otherwiseagent-browserwill reuse the existing daemon and print--profile ignored.d3k agent-browser close --all -
Start the app through d3k in
servers-onlymode and keep that command running. In Codex, this is more reliable than asking d3k to launch the browser itself when a fresh profile is required.d3k --no-agent --no-skills --servers-only --command "npm run dev -- -H 127.0.0.1 -p 3000" --port 3000 --startup-timeout 90 --no-tuiAdjust the package-manager command and port for the project. Prefer
--commandover--scriptwhen passing framework flags. For npm scripts, put flags after--; otherwise tools like Next.js can interpret the port as a project directory.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 155 lines · 12 tokens per session scan A 4a434b081cce
d3k is a skill published in the GitHub repository varandrew/moor (163 stars, last pushed yesterday), licensed Apache-2.0. It adds 12 tokens to every session and 1,252 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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