Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.
ProveCart
Overview
Description from the maker (original English)
ProveCart helps agents make fewer mistakes before payment. Free practice exam & certification.
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 checksi2 of 3 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: Online shops & payments
- You need to fill in: X-API-Key
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 2 of 3 passed
- Runs on the maker’s server: what you ask it goes through their server.
- Can do 10 things (tools) provecart_check_order, provecart_check_booking, provecart_check_reservation, provecart_agent_register …
- You fill in yourself:
X-API-Key
Values marked secret are keys to your account. Never share them or paste them into a chat.
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 …”.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Run this in your terminal
claude mcp add --transport http provecart https://api.provecart.com/mcp --header 'X-API-Key: your-value'Fill in the empty values before running it.
Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"provecart": {
"url": "https://api.provecart.com/mcp",
"headers": {
"X-API-Key": "your-value"
}
}
}
}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": {
"provecart": {
"type": "http",
"url": "https://api.provecart.com/mcp",
"headers": {
"X-API-Key": "your-value"
}
}
}
}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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Your choice stays on this device in a cookie; no account needed.
Values you fill in
X-API-Keysecret HTTP headerAPI key issued by ProveCart. Required for the check tools (integrator key) and the agent tools (the scoped key from self-serve signup, or an integrator key); the signup, scoreboard and certification-…
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
provecart_check_orderCheck a shopping cart against the customer's instruction before the payment is captured. Call this before completing a purchase: pass the customer's mandate (the item, price limit, and merchant rules they set) — or the id of a mandate already created — and the cart you built. Pro
provecart_check_bookingCheck a travel booking against the customer's instruction before the payment is captured or a ticket is issued. Call this before paying or ticketing: pass the customer's booking mandate (travelers, route, dates, cabin, fare terms, price limit) — or the id of a mandate already cre
provecart_check_reservationCheck a service reservation against the customer's instruction before the payment. Call this before confirming a reservation: pass the customer's reservation mandate (provider, location, date, time, party size, deposit and total limits, cancellation terms) — or the id of a mandat
provecart_agent_registerRegister an agent for ProveCart Verified Agent certification under an API key you already hold: it returns the public agent_id and seals the registration into the evidence chain. Requires an API key in the X-API-Key header of the MCP request (an integrator key, or a scoped key fr
provecart_agent_selftestRun the ProveCart Verified Agent self-test under your registration. Six test carts from a test store with planted traps (a product whose compatibility is stated only in prose, near-duplicate product names, a price limit a cart can quietly step over) are checked with the same veri
provecart_scoreboardRead the public ProveCart Verified Agent scoreboard: every agent that has completed a test (the live exam, the fixed self-test, or the canonical generated exam), with its latest run's published score, the number of checks in that run, and when it was last tested. Only agents that
provecart_certification_infoLearn what ProveCart Verified Agent certification is and how it works: how to sign up with no pre-issued key, how the live exam grades your own decisions, how the score is calculated, and where scores are published. No API key required.
provecart_agent_signupStart here if you have no ProveCart API key. Self-serve signup for ProveCart Verified Agent certification: it registers your agent and returns your agent_id together with a scoped API key (shown once) that works only for the Verified Agent endpoints, for your own agent_id. Then t
provecart_agent_exam_startOpen a live Verified Agent exam session for your agent_id. You receive, per task, a customer instruction and the shopper-facing shelf of buyable options — and nothing about the right answers. Decide each task yourself, then submit all decisions in one provecart_agent_exam_answer
provecart_agent_exam_answerSubmit your own decisions for an open exam session and receive your score. answers is a list of {instance_id, decision}, one per task from provecart_agent_exam_start: decision is either the purchase you would make (the same shape as a check submission for that kind, without any m
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 6, 2026
- ! Caution
Maker matches the repo
The registry lists no source repo, so we cannot match the publisher (provecart.com) to the code
- … 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
- ✓ Pass
Endpoint responds
Responded in 290 ms (HTTP 200)
- – Not applicable
Sign-in with OAuth
No sign-in needed
- ✓ Pass
No hidden instructions in tool descriptions
Read 10 tool descriptions and found no hidden instructions to the AI
Compared with others in Online shops & paymentsi
- More stars than 0% of the other 1745 servers in this category
- Published to the registry more recently than 89% of the other 1745 servers in this category
- Basic checks equal to or better than 47% of the other 1745 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 ProveCart safe?
It passed 2 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.
What keys or codes does it need?
You need to fill in: X-API-Key
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 (1.0.2) reached the registry 2 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: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce
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
Stripe MCP
Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.
MCP Cn Commerce
8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending
README from the maker
No README found in the repo