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
JustFix Estimator
Overview
Description from the maker (original English)
Quote UK trades jobs from any AI agent. Price breakdown + tappable booking link.
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 in the cloud
- Transport: Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://estimator-mcp.justfix.app/mcpRun this in your terminal
claude mcp add --transport http justfix-skill https://estimator-mcp.justfix.app/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"justfix-skill": {
"url": "https://estimator-mcp.justfix.app/mcp"
}
}
}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.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"justfix-skill": {
"type": "http",
"url": "https://estimator-mcp.justfix.app/mcp"
}
}
}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.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://estimator-mcp.justfix.app/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
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 Just-Fix, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 18354 servers in this category
- Published to the registry more recently than 8% of the other 18354 servers in this category
- Basic checks equal to or better than 100% of the other 18354 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 JustFix Estimator 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?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 6 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Qemu MCP
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 2 days ago
Install
Qemu MCP
by 0xmortuex
Boot and drive QEMU VMs from an AI agent: keys, screenshots, serial. No guest agent.
Runs on your computerUpdated 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.
JustFix Skill 🛠️
Quote UK trades jobs from any AI agent. Get a price breakdown and a tappable booking link in a single turn.
👉 [How to install JustFix on your AI agent →](./INSTALL.md) — Claude Desktop, Cursor, Claude Code, Codex CLI, Gemini CLI, OpenClaw, Hermes, or any MCP-aware client.
See it in action
On OpenClaw + Telegram
Ask Squid (or any OpenClaw agent) for a quote in plain English. The skill maps the request to the right JustFix service code, calls the MCP, and replies with a clean quote card and a tappable booking URL.
In ChatGPT (via the JustFix app)
The same underlying MCP server powers JustFix's official ChatGPT app. The skill in this repo gives you the equivalent experience in any other agent, with a tappable booking link instead of the ChatGPT rich card.
In Claude Code (and Cursor, Codex CLI, Gemini CLI)
The same skill loads natively in Claude Code. Ask in plain English, the skill resolves the service, calls the MCP, and returns the same quote card plus a tappable booking link.
_One-pager install guide: [INSTALL.md](./INSTALL.md). Detailed per-harness notes in install/._
What is this?
A portable AI skill that plugs into JustFix's public MCP server and lets your AI agent quote real trades jobs in real time. Built for OpenClaw, Hermes, Claude Code, Cursor, Codex CLI, Gemini CLI, and any other harness that supports AgentSkills or the Model Context Protocol.
One conversation, one quote, one tap to book.
You: How much would it cost to get someone to fix a broken kitchen tap?Agent: 🔧 Plumbing Estimate Scope: Diagnose and repair dripping kitchen tap. Estimated duration: 1 hour
Labour (1 hr × £90/hr): £90.00 Call-out fee: £50.00 Total estimate: £140.00
📅 Tap to book this job → my.justfix.app/booking/...
What it does
The skill exposes three MCP tools from JustFix's estimator server to your AI agent:
| Tool | What it does |
|---|---|
list_services | Lists JustFix's 13 service categories with hourly rates |
call_out_fee | Returns the flat booking call-out fee |
service-estimate-card | Generates a full cost estimate plus a unique booking URL |
When the user is ready to confirm, the URL pops them to my.justfix.app where they finish the booking (date, postcode, payment).
Supported services
Electrical · Plumbing · Locksmith · Glazing · Carpentry · Handyperson · Heating + Gas · Gas Appliances · Roofing · Drains · White Goods · Boiler Service · Something Else (catch-all)
UK only. Hourly rates from £55 (white goods) to £90 (most trades). £50 flat call-out fee per booking.
Installation (pick your harness)
| Harness | Install guide |
|---|---|
| OpenClaw | install/openclaw.md |
| Hermes | install/hermes.md |
| Claude Code | install/claude-code.md |
| Cursor | install/cursor.md |
| Codex CLI | install/codex-cli.md |
| Gemini CLI | install/gemini-cli.md |
If your harness isn't listed but supports MCP, the pattern is:
- Register
https://estimator-mcp.justfix.app/mcpas a streamable-HTTP MCP server. - Put
SKILL.mdsomewhere the harness's skill discovery picks up (or paste its contents into your agent instructions). - Done. No auth, no config, no API keys.
Sample conversations
Worked examples for common queries:
- Quote a boiler service
- Multi-hour electrical job
- What services does JustFix offer?
How it works
┌─────────────┐ ┌──────────────────────┐ ┌────────────────────┐│ AI agent │ ──MCP──▶│ JustFix MCP server │ ──API──▶│ justfix.app │ │ + SKILL.md │ │ estimator-mcp │ │ pricing engine │ └─────────────┘ └──────────────────────┘ └────────────────────┘ │ │ │ │ │ ◀── booking URL with unique tracking ID ────────────────┘ │ ▼ ┌─────────────┐ │ User │ ──── taps URL ────▶ my.justfix.app booking form └─────────────┘
The MCP server is hosted on Vercel by JustFix and is open – no API key required. Each estimate is tagged with a unique chatgpt_booking_link_id for attribution.
What this skill CAN'T do
Honest about the boundaries:
- ❌ Complete the booking itself (the user finishes on the JustFix website)
- ❌ Check live engineer availability (handled at booking time)
- ❌ Take payment (handled on the booking page)
- ❌ Quote outside the UK
- ❌ Quote materials or parts (labour-only estimate)
These are functions of the underlying JustFix product, not the skill. As JustFix expands the MCP, the skill will too.
Branding and attribution
This is an official integration with JustFix's public MCP server, but the skill repo itself is community-maintained. JustFix takes no responsibility for the skill's behaviour – only for the underlying MCP server.
If you fork, modify, or embed this skill, you must:
- Keep the MIT license intact
- Not misrepresent the JustFix brand
- Pass through the booking URL unchanged (for attribution tracking)
Roadmap
When JustFix expands the MCP server, the skill will follow:
- Engineer availability lookup
- Quote-to-booking-confirmation in one turn
- Multi-job bundle pricing
- Recurring service plans (e.g. annual boiler service auto-rebook)
- Photo upload for diagnostic estimates
Track progress in GitHub Issues.
Contributing
Pull requests welcome. Please:
- Read SKILL.md and understand the format
- Run the install/* guides in your own harness to test changes
- Open an issue first for anything bigger than a typo fix
License
MIT – use, modify, distribute, embed in commercial products. No warranty.
About JustFix
JustFix is a UK home-services platform connecting customers with vetted local tradespeople. Boiler service, electrical, plumbing, locksmith, glazing and more. Same-day availability in most UK cities.