Spec Driven Development
by formulahendry
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer★ 440MITUpdated 14 months ago
Install
Grill
Overview
Description from the maker (original English)
A second opinion from an unrelated AI model before you commit to a decision.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs on your computer
- Transport: stdio
- Category: Other
- You need to fill in: GRILL_API_KEY
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- You fill in yourself:
GRILL_API_KEY
Values marked secret are keys to your account. Never share them or paste them into a chat.
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Download the maker’s .mcpb file
The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.
Run this in your terminal
Fill in the empty values before running it.
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
Your choice stays on this device in a cookie; no account needed.
Values you fill in
- OpenRouter key. The server lists its tools without one. A grill needs it.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account mtangoz, which owns the repo
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- – Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Compared with others in Otheri
- More stars than 0% of the other 32558 servers in this category
- Published to the registry more recently than 50% of the other 32558 servers in this category
- Basic checks equal to or better than 100% of the other 32558 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Grill safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
You need to fill in: GRILL_API_KEY
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 41 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, FactLot
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
by desktop-commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud★ 211Updated yesterday
Install
FactLot
by 9mp96ygnbk-alt
Cited CRE facts and deterministic calculators for agents: rent, CAM, debt sizing, IRR, parcel IDs.
Computer or cloudUpdated today
Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Grill: grill your AI before you send it to your boss
Hear the strongest case against your plan, then decide for yourself.
Setup guide: grillyour.ai No key needed: Anyone can sign up and connect Grill to the AI they use at https://grillyour.ai/mcp. See it first: four made-up decisions, grilled
Tell the assistant you think with, "grill this": Claude, ChatGPT, Copilot, Gemini, Grok or Muse. It sends the decision as you said it. An outside judge, a model from a different company, comes back with a short note: one verdict line, then one short line naming the question that would change the call, then the sharpest point and one cheap test. The verdict, the point and the test stay within about 50 words. The extra line is at most about 25 words, and it never comes before the verdict. Say more, options, or your call when you want the rest. A thin line gets a quick take and one question, not a refusal. A record is written only after you answer, and a percent is optional. Grill does not store it on the installed tool.
Verdict: shaky. The plan assumes customers stay at the new price, and nothing in it tests that.
Falsifier: show the new price to one in ten new signups for two weeks, and compare how many start paying.
What Grill promises
The verdict never becomes the decision. You decide. Your values and judgment calls are yours: each verdict lists what the judge checked for you separately from what is your call. The judge is a model from a different company. Grill uses OpenRouter's Auto Router, and it does not pin models. Only the write-up you approve leaves your machine. Every promise, and the code and test that enforce it: docs/PRINCIPLES.md.
Set up
Claude Desktop and Claude Code enforce that in code. The copy-and-paste routes check it and warn you. Who to paste into is in the table below.
Grill in chat
Anyone can sign up. The steps are at grillyour.ai/start. Use the same email each time, the email you signed up with, every time.
- Claude.ai, verified working. On the web, on a Free, Pro or Max plan: Settings → Connectors → Add custom connector. URL
https://grillyour.ai/mcp, name it Grill, then sign in. Asking Claude in a chat to connect it does not work. - ChatGPT, verified working. On the web, with a paid plan: Plugins, the plus button, Add custom MCP server. Name Grill, server URL
https://grillyour.ai/mcp, choose OAuth. Click I understand and want to continue, then Create. Install it, then sign in. - Grok Bot, verified working. Tell the bot
Add this MCP server: https://grillyour.ai/mcp, then sign in when asked. - Gemini: Should work, testing now. US only, a personal Google account, Keep Activity on. On gemini.google.com: Settings, Connected Apps, Add a custom app, paste
https://grillyour.ai/mcp, Next, then sign in. - Meta AI, coming soon.
Setup for the owner is in docs/HOSTED.md.
Claude Desktop (Mac or Windows): the one-click judge, about 2 minutes with a key, about 10 if you need one
- Get a key for Grill's model router: go to openrouter.ai/keys, sign in, click Create key, and add $5 of credit. A grill costs about a cent or two.
- Install Grill. Download [grill.mcpb](https://github.com/mtangoz/grill/releases/latest/download/grill.mcpb) and double-click it, or drag it onto the Claude window. Paste your key when Claude asks. There's nothing else to install; Claude Desktop runs it.
- Try it. In any chat, type: *Grill this: we're moving our launch to March. I'm 70% sure it gets us more signups.*
The extension reads GRILL_API_KEY. OPENROUTER_API_KEY works when that is unset.
claude.ai on the web or your phone: no key needed
- Download [grill-skill.zip](https://github.com/mtangoz/grill/releases/latest/download/grill-skill.zip). In Claude, open Customize → Skills, upload it, and switch it on. To add everything at once instead, go to Customize → Plugins → Add → Add marketplace and enter
mtangoz/grill. - Say *"grill this: …"*. Claude writes the judge's prompt. Tap Open in ChatGPT, or paste it into Gemini, then paste the answer back into Claude.
Want it in one step? Use Claude Desktop, above.
ChatGPT, Copilot, Gemini, Grok or Muse: no install, no key
- Copy [the Grill prompt](prompts/grill.md) into the assistant you think with, and say what you're deciding.
- It writes your decision up with you, then gives you a prompt for the judge.
- Paste that into an assistant from a different company, then paste the answer back.
| You think with | Judge with |
|---|---|
| ChatGPT | Claude, Gemini or Grok |
| Copilot | Gemini, because Copilot can run OpenAI, Anthropic or xAI models |
| Gemini | Claude, ChatGPT or Grok |
| Grok or GrokBot | Claude, ChatGPT or Gemini |
| Muse | Claude, ChatGPT or Gemini |
Meta AI (Muse)
- In the Meta AI app, open Muse → Settings → Connectors → Add custom connector.
- URL:
https://grillyour.ai/mcp - Client ID:
RNdHSHmWCRJO40vd. Same for everyone. No secret. - Tap Add, then sign in with the same email you signed up with, every time. We email you a code; check spam if it isn't there in a minute.
Cursor, VS Code, Codex, Gemini CLI, or any app that runs MCP servers
npx -y grillyour --set-key # once: paste your key, Enter, then Ctrl-DThen add a server named grill that runs npx -y grillyour. The config holds no key. Each app's config, and one-click installs for Cursor and VS Code, are in docs/ANY-APP.md. A Grill Pro key works here too.
Claude Code
/plugin marketplace add mtangoz/grill/plugin install grill@grill
It asks for your model router key. Grill reads GRILL_API_KEY first. OPENROUTER_API_KEY works when that is unset. Or save the key once for every app on this computer with npx -y grillyour --set-key. It goes in ~/.config/grill/key, outside any project's .env.
When Claude Code shows you a plan to approve, Grill adds one line, once a session: want an outside judge on this plan first? Keep planning and say "grill this plan". Claude Code hands the hook the plan, and the hook ignores it: it sends nothing and keeps nothing of the plan. To ask once, it keeps an empty marker file per session in the plugin's data folder, and removes markers older than two days the next time it runs. Turn it off with GRILL_PLAN_OFFER=off.
Claude Code's advisor (/advisor) has a stronger Claude look over the work. That is a second opinion from the same company. Grill's judge is from a different one. Use both.
What it costs
Grill is free. On your own key a grill costs about a cent or two. Copy and paste uses the assistants you already have.
Coming later: an optional Pro plan with saved decision history and look-back reminders. The free tool stays free and account-free. Hear when it's ready.
Privacy
- Your notes stay in your tools. Only the write-up you approve is sent. The reflection you write stays in your chat or your own notes.
- The free tool has no account. Grill's makers never see your decisions on that tool. Anonymous usage stats are off unless you turn them on. An in-chat account is open to anyone who signs up; what it stores is in docs/DATA-LEDGER.md.
- A key or token in the write-up stops the run. Email addresses, phone numbers and card numbers are masked.
- The quality check (Jev) is on by default and also sees the masked write-up. Say "skip the check" to skip it for one grill, or switch it off in Grill's settings. The website counts visits without cookies.
- Grill news line: after a finished grill, at most once a session, and only within 7 days of a release or on the first 3 days of a month, a line with a link to hear when an optional Pro plan is ready. Showing the line sends nothing. Hide it with the "Show Grill news" setting, or
GRILL_NEWS=off. It stops on its own. - Anonymous usage stats: off by default. One metadata ping to Grill's website after the first successful grill, and never again. Never the decision, the question, the verdict, or your key.
What we will and won't do with your data, and how we build: docs/PRINCIPLES.md.
Turn anonymous usage stats on
Leave them off and the tool does not call Grill. To opt in:
- Claude Desktop: in the install dialog, switch on "Send anonymous usage stats (optional)".
- Claude Code:
/plugin→ Configure options, the same switch. - Smithery: the install form, the same switch.
- stdio, npx or Docker: set
GRILL_USAGE_STATS=on.
Turn them off in the same place, or set GRILL_PING=off. DO_NOT_TRACK=1 also disables the ping. The paste route does not send it.
Details: docs/PRIVACY.md.
Weekly review
Optional, in Claude, when you keep your own decision log: docs/WEEKLY-REVIEW.md.
License
MIT. See LICENSE. The code that handles your decision stays MIT for good (docs/PRINCIPLES.md). The name and logo are not part of the license: TRADEMARKS.md.