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
Container Loading Calculator
Overview
Description from the maker (original English)
Work out how many flat-pack units fit in a 20ft or 40HQ container: layers, weight and utilisation.
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://buildextechnology.com/api/mcpRun this in your terminal
claude mcp add --transport http container-loading https://buildextechnology.com/api/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"container-loading": {
"url": "https://buildextechnology.com/api/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": {
"container-loading": {
"type": "http",
"url": "https://buildextechnology.com/api/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://buildextechnology.com/api/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 CindyLiao1106, 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 32558 servers in this category
- Published to the registry more recently than 63% 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 Container Loading Calculator 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 22 days 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, 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
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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.
Container loading calculator
How many flat-pack units — or panels, or crates — fit in a 20ft or 40HQ container, and what limits the load: volume or payload. No dependencies, one file.
python3 container_loading.py 40hq 2900 2200 600 900{"container": "40ft high cube", "units_per_layer": 4, "layers": 4, "units_by_volume": 16, "units_by_payload": 31, "units": 16, "limited_by": "volume", "volume_utilisation_pct": 80.2, "payload_utilisation_pct": 50.3 }
The same unit in a 20ft, with a heavier unit, is weight-limited instead:
python3 container_loading.py 20gp 1000 1000 500 5000units_by_volume 40 · units_by_payload 5 · units 5 · limited_by "weight"
Options
| flag | what it does |
|---|---|
--max-layers N | caps the number of layers when the packing method limits stacking |
--rotate | tries rotating each unit 90° and uses whichever fits more per layer |
Why it refuses to calculate
If the packed length, width, height or the unit weight is missing, the tool raises an error listing exactly what is missing instead of returning a number. A guessed loading plan is how deposits get lost — the packed height and the unit weight are the two inputs that move the answer most, and both come from the factory packing method.
Container data used
Typical published internal dimensions and payloads. Confirm against the carrier's own data and the actual packing list before booking.
| container | internal L × W × H (mm) | payload (kg) |
|---|---|---|
| 20ft GP | 5898 × 2352 × 2393 | 28,200 |
| 40ft HQ | 12032 × 2352 × 2698 | 28,600 |
Volume utilisation is calculated on the packed envelope (length × width × height of one unit), not on the net product volume.
Web version
Same logic, in the browser, no install: [container loading calculator](https://buildextechnology.com/tools/container-loading-calculator/) — the tool we use ourselves when quoting flat-pack buildings and aluminium ceiling systems.
Tests
python3 tests/test_loading.pyLicense
MIT