Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
All-in DDP quotes for China to USA shipments, 100 g to 2,000 kg, from a live rate card
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Works in Claude on the web, desktop and mobile:
https://plainfreight.com/api/mcpRun this in your terminal
claude mcp add --transport http quotes https://plainfreight.com/api/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"quotes": {
"url": "https://plainfreight.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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"quotes": {
"type": "http",
"url": "https://plainfreight.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:
https://plainfreight.com/api/mcpMenu names can differ slightly by plan and over time.
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These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 9, 2026. The maker wrote them, not us; we show them as plain text.
estimate_priceRough price estimate for shipping goods from China to a US address, 100 g to 2,000 kg. Records nothing, contacts no one and needs no email. Inputs: total weight, and optionally the product and carton sizes or total volume. Returns estimated door to door prices in USD for air (and
check_goodsChecks whether Plain Freight can ship a product from China to the US, and which documents it needs. Records nothing. Input: the product description. Returns a verdict: instant_offer or branded_rate (priced at once, each on its applicable rate) or person_checks_first (for example
generate_offerPrices a real shipment from China to a US address, 100 g to 2,000 kg, on Plain Freight's live pricing engine. Returns door to door prices in USD: each option covers freight, US customs clearance and delivery, and says whether US import duty is included (DDP) or paid at import. Ca
check_offer_statusReads the result of the second check on a Plain Freight offer, by the offer's quote_id. Read-only. Returns settled (true once the check finished), possibly updated options and summary, follow-up questions whose answers change the price or customs channel, the offer email status,
track_shipmentReads a booked Plain Freight shipment from its tracking link. Input: the tracking link from the booking email (https://plainfreight.com/track/ ) or the bare token; the token is the credential, so only someone the customer shared the link with can read the record. Returns the ship
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 9, 2026
The registry name was verified against the domain plainfreight.com (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 112 ms (HTTP 200)
No sign-in needed
Read 5 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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.
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 months ago.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, Mcphost
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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Hosted MCP runtime where your agent publishes its own tools by tool call and keeps working.
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A hosted Model Context Protocol server that quotes real freight. Ask it what it costs to ship something from China to the United States and it returns an all-in delivered-duty-paid price from the same pricing engine a human customer is quoted from: freight, US customs clearance, import duty and delivery to a US door, in one number.
No API key. No signup. Nothing to install.
https://plainfreight.com/api/mcp
Transport is Streamable HTTP, stateless, protocol version 2025-06-18 (also accepts 2025-03-26 and 2024-11-05).
Claude Code:
claude mcp add --transport http plain-freight https://plainfreight.com/api/mcp
Claude Desktop, Cursor, or anything reading a JSON config:
{
"mcpServers": { "plain-freight": { "type": "http", "url": "https://plainfreight.com/api/mcp" } } }
Check it by hand:
curl -s -X POST https://plainfreight.com/api/mcp \
-H "Content-Type: application/json" \ -H "Accept: application/json, text/event-stream" \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Five tools. Only generate_offer records anything; the other four only read. No tool books or charges anything.
| Tool | What it does |
|---|---|
estimate_price | A rough door to door cost in USD for air (and sea from 100 kg chargeable weight), from the same pricing engine. Needs weight_kg; product, carton sizes (carton_length_cm, carton_width_cm, carton_height_cm, carton_count) or total_cbm sharpen it. Returns the chargeable weight used (the greater of actual weight and carton volume in cm3 / 6,000), transit estimates and whether US import duty is included. Records nothing, contacts no one, needs no email. Goods that need a person to review them get no figure. |
check_goods | Says whether a product (product, in the user's words) is priced at once or reviewed by a person first (for example batteries, chemicals, food, cosmetics, seeds, vapes or weapons), with a plain explanation and what documents to have ready. Same screen as generate_offer, so it predicts what an offer will do. Records nothing. Not legal or customs advice. |
generate_offer | The firm offer. Needs product and weight_kg (0.1 to 2000); dimensions, origin, destination_zip, urgency, email, name and notes all improve the answer. Pass carton sizes when you have them: for light bulky cargo the volumetric weight sets the price, not the scale weight. Each call records a quote request, and if an email is given the written offer is mailed there once the second check settles (at most one offer email per address per day). Returns the options, a quote_id and a link to a booking form on plainfreight.com prefilled with the shipment. |
check_offer_status | Polls an offer by quote_id until settled is true. Every quote gets a second check, which can add follow-up questions, change the options, or set needs_review. Read-only. |
track_shipment | Reads the live record for a booked shipment from its tracking_link (https://plainfreight.com/track/ , or the bare token): current stage on the 10-stage lifecycle, route and dated events. Read-only. |
Booking happens outside the chat: the user opens the prefilled booking form, replies to the offer email, or writes to hello@plainfreight.com quoting the quote_id. Nothing is paid before the goods are weighed at the warehouse.
Two behaviours worth knowing before you build on it:
Rate limits: 20 offers per hour per IP, 4 per email address, 30 across all agents per hour. For bulk or programmatic access, email hello@plainfreight.com.
There is also a plain REST version of the same pricing call at POST https://plainfreight.com/api/v1/offer, described in openapi.json, and human documentation at plainfreight.com/for-agents.
The same engine feeds three pages that are free to cite, with CSV and JSON where it makes sense:
The price-index data is also published as a dataset at plainfreight-com/china-usa-freight-price-index.
A China to USA freight agency for small importers: one all-in DDP price on shipments from 100 g to 2,000 kg, quoted before pickup. Plain Freight is a trading name of Fisto LLC, a Wyoming limited liability company. The price does not include cargo insurance, which the customer arranges separately.
Questions, or a shipment that needs a human: hello@plainfreight.com
MIT for the contents of this repository. The MCP server itself is a live commercial service; using it means quoting real freight, so treat the prices as real.